The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
Hideto Matsuyama - One of the best experts on this subject based on the ideXlab platform.
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Hollow Fiber-Type Facilitated Transport Membrane Composed of a Polymerized Ionic Liquid-Based Gel Layer with Amino Acidate as the CO2 Carrier
Industrial & Engineering Chemistry Research, 2020Co-Authors: Eiji Kamio, Masashi Tanaka, Yuta Shirono, Yujeong Keun, Farhad Moghadam, Tomohisa Yoshioka, Keizo Nakagawa, Hideto MatsuyamaAbstract:A hollow fiber-type Facilitated Transport Membrane composed of an ionic liquid-based polymer network gel layer with amino acid as the CO2 carrier and a porous polysulfone support Membrane was devel...
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improvements in the co2 permeation selectivities of amino acid ionic liquid based Facilitated Transport Membranes by controlling their gas absorption properties
Journal of Membrane Science, 2014Co-Authors: Shohei Kasahara, Eiji Kamio, Hideto MatsuyamaAbstract:A series of amino acid ionic liquids (AAILs) composed of different cations of different sizes, including trihexyl(tetradecyl)phosphonium glycinate, tetrabutylphosphonium glycinate and triethyl(pentyl)phosphonium glycinate have been synthesized for the carrier of CO2 Facilitated Transport Membrane. Their physical properties, including their viscosity, density, molar volume and N2 absorption amount were investigated. The amount of N2 absorption decreased as the size of the cation of the AAIL decreased. Facilitated Transport Membranes containing these AAILs were prepared, and their CO2 and N2 permeabilities were measured. The N2 permeabilities were systematically investigated both experimentally and theoretically with the aim of improving the selectivity of the CO2 permeation of the AAIL-based Facilitated Transport Membrane. As expected, the CO2 permselectivity was improved using triethyl(pentyl)phosphonium glycinate, which contained the smallest cation of the AAILs investigated in this study. We have proposed a methodology for improving the CO2 selectivity of AAIL-based Facilitated Transport Membranes based on reducing their N2 permeabilities.
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Effect of water in ionic liquids on CO2 permeability in amino acid ionic liquid-based Facilitated Transport Membranes
Journal of Membrane Science, 2012Co-Authors: Shohei Kasahara, Eiji Kamio, Toru Ishigami, Hideto MatsuyamaAbstract:Abstract Amino acid ionic liquid-based Facilitated Transport Membranes with tetrabutylphosphonium amino acid ionic liquids with glycine, alanine, proline and serine as the anion were prepared and their CO 2 permeation properties were evaluated from the physical and physicochemical properties of the amino acid ionic liquids. A tetrabutylphosphonium proline-based Facilitated Transport Membrane showed an excellent CO 2 permeability of 14,000 Barrer, twice that of the others investigated, and a CO 2 /N 2 selectivity of 100 at 373 K under dry conditions. Thermogravimetric measurement showed that the tetrabutylphosphonium proline had a relatively high water-holding ability compared with the other amino acid ionic liquids investigated. The strong water holding ability of tetrabutylphosphonium proline realized the large absorption amount of CO 2 and established a large concentration gradient for the CO 2 -complex across the Membrane. The large concentration gradient provided a large driving force for CO 2 -complex Transport through the Membrane and increased CO 2 permeability.
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selective separation of co2 by using novel Facilitated Transport Membrane at elevated temperatures and pressures
Journal of Membrane Science, 2007Co-Authors: Reza Yegani, Osamu Okada, Masaaki Teramoto, Norifumi Matsumiya, H Hirozawa, Hiroaki Himei, Teiji Takigawa, Naoto Ohmura, Hideto MatsuyamaAbstract:Abstract A novel Facilitated Transport Membrane consisting of 2,3-diaminopropionic acid (DAPA) as a selective carrier of CO 2 and PVA/PAA gel as support was developed for the removal of CO 2 from the water gas shift reactor in the hydrogen production plants. The Membrane performance was tested by the experiments on the selective separation of CO 2 from a mixture of 3.65% CO 2 , 32.9% N 2 and 63.5% H 2 O at the temperature from 125 to 160 °C and the feed gas pressure from 100 to 650 kPa. Typical observed CO 2 permeances were 3.14 × 10 −4 mol/m 2 s kPa at 125 °C and 300 kPa, 1.71 × 10 −4 at 140 °C and the feed gas pressure of 450 kPa and 1.10 × 10 −4 at 160 °C and 600 kPa, and the CO 2 /H 2 selectivities at the respective conditions were 1070, 561 and 432, respectively. Obtained results showed that the water content in the Membrane is one of the key factors, which determines the CO 2 permeance and CO 2 /N 2 selectivity. The CO 2 permeance as well as the CO 2 /N 2 selectivity increased with increasing the pressure, which might be mainly caused by increasing the water content in the Membrane. It was also found that increasing the carrier concentration could significantly enhance the Membrane performance, especially at elevated temperatures.
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Evaluation of energy consumption for separation of CO2 in flue gas by hollow fiber Facilitated Transport Membrane module with permeation of amine solution
Separation and Purification Technology, 2005Co-Authors: Norifumi Matsumiya, Masaaki Teramoto, Satoshi Kitada, Hideto MatsuyamaAbstract:Abstract Energy consumption for the separation of CO 2 in flue gas by a novel hollow fiber Facilitated Transport Membrane module was evaluated and compared with those by conventional separation processes such as gas absorption and polymeric Membrane separation. In the novel Facilitated Transport Membrane system, both a feed gas (CO 2 /N 2 mixture) and a carrier solution (aqueous diethanolamine solution) are supplied to the lumen side (feed side, high pressure side) of the hollow fiber ultrafiltration Membrane module and flow upward. The carrier solution, which contains dissolved solute gas, CO 2 in the present case, permeates the Membrane to the permeate side (low pressure side, shell side), where the solution liberates dissolved gas to become a lean solution and the lean solution is returned to the lumen side by a pump. The feed side pressure was atmospheric and the permeate side pressure was controlled in the range from 10 to 27 kPa. CO 2 in the feed gas consisting of 10% CO 2 and 90% N 2 was concentrated to higher than 99%. The effects of various system parameters, such as permeate side pressure, temperature, gas and liquid flow rates and the inner diameter of hollow fiber Membrane, on the energy consumption for CO 2 recovery were investigated. Energy consumption decreased with increasing temperature and had a minimum at an optimum permeate side pressure. The minimum energy consumption was estimated as 0.211 kWh kg-CO 2 −1 when the inner diameter of the hollow fiber was 0.8 mm. The energy consumption increased with feed gas flow rate, however, it was little influenced by liquid flow rate. The energy consumption decreased remarkably with increasing the inner diameter of the hollow fiber, and it was estimated as 0.072 kWh kg-CO 2 −1 when hollow fibers of 1.4 mm in inner diameter were used. This value is the lowest among those reported so far.
Masaaki Teramoto - One of the best experts on this subject based on the ideXlab platform.
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selective separation of co2 by using novel Facilitated Transport Membrane at elevated temperatures and pressures
Journal of Membrane Science, 2007Co-Authors: Reza Yegani, Osamu Okada, Masaaki Teramoto, Norifumi Matsumiya, H Hirozawa, Hiroaki Himei, Teiji Takigawa, Naoto Ohmura, Hideto MatsuyamaAbstract:Abstract A novel Facilitated Transport Membrane consisting of 2,3-diaminopropionic acid (DAPA) as a selective carrier of CO 2 and PVA/PAA gel as support was developed for the removal of CO 2 from the water gas shift reactor in the hydrogen production plants. The Membrane performance was tested by the experiments on the selective separation of CO 2 from a mixture of 3.65% CO 2 , 32.9% N 2 and 63.5% H 2 O at the temperature from 125 to 160 °C and the feed gas pressure from 100 to 650 kPa. Typical observed CO 2 permeances were 3.14 × 10 −4 mol/m 2 s kPa at 125 °C and 300 kPa, 1.71 × 10 −4 at 140 °C and the feed gas pressure of 450 kPa and 1.10 × 10 −4 at 160 °C and 600 kPa, and the CO 2 /H 2 selectivities at the respective conditions were 1070, 561 and 432, respectively. Obtained results showed that the water content in the Membrane is one of the key factors, which determines the CO 2 permeance and CO 2 /N 2 selectivity. The CO 2 permeance as well as the CO 2 /N 2 selectivity increased with increasing the pressure, which might be mainly caused by increasing the water content in the Membrane. It was also found that increasing the carrier concentration could significantly enhance the Membrane performance, especially at elevated temperatures.
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Evaluation of energy consumption for separation of CO2 in flue gas by hollow fiber Facilitated Transport Membrane module with permeation of amine solution
Separation and Purification Technology, 2005Co-Authors: Norifumi Matsumiya, Masaaki Teramoto, Satoshi Kitada, Hideto MatsuyamaAbstract:Abstract Energy consumption for the separation of CO 2 in flue gas by a novel hollow fiber Facilitated Transport Membrane module was evaluated and compared with those by conventional separation processes such as gas absorption and polymeric Membrane separation. In the novel Facilitated Transport Membrane system, both a feed gas (CO 2 /N 2 mixture) and a carrier solution (aqueous diethanolamine solution) are supplied to the lumen side (feed side, high pressure side) of the hollow fiber ultrafiltration Membrane module and flow upward. The carrier solution, which contains dissolved solute gas, CO 2 in the present case, permeates the Membrane to the permeate side (low pressure side, shell side), where the solution liberates dissolved gas to become a lean solution and the lean solution is returned to the lumen side by a pump. The feed side pressure was atmospheric and the permeate side pressure was controlled in the range from 10 to 27 kPa. CO 2 in the feed gas consisting of 10% CO 2 and 90% N 2 was concentrated to higher than 99%. The effects of various system parameters, such as permeate side pressure, temperature, gas and liquid flow rates and the inner diameter of hollow fiber Membrane, on the energy consumption for CO 2 recovery were investigated. Energy consumption decreased with increasing temperature and had a minimum at an optimum permeate side pressure. The minimum energy consumption was estimated as 0.211 kWh kg-CO 2 −1 when the inner diameter of the hollow fiber was 0.8 mm. The energy consumption increased with feed gas flow rate, however, it was little influenced by liquid flow rate. The energy consumption decreased remarkably with increasing the inner diameter of the hollow fiber, and it was estimated as 0.072 kWh kg-CO 2 −1 when hollow fibers of 1.4 mm in inner diameter were used. This value is the lowest among those reported so far.
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ethylene ethane separation and concentration by hollow fiber Facilitated Transport Membrane module with permeation of silver nitrate solution
Separation and Purification Technology, 2005Co-Authors: Masaaki Teramoto, Satoshi Shimizu, Hideto Matsuyama, Norifumi MatsumiyaAbstract:Abstract Novel hollow fiber Facilitated Transport Membrane modules were used for ethylene/ethane separation using an aqueous silver nitrate solution as a carrier solution. In this Membrane system, a feed gas consisting of 80 mol% C 2 H 4 and 20 mol% C 2 H 6 and an aqueous 4 M silver nitrate solution are supplied to the lumen side (high pressure side, feed side) of a hollow fiber ultrafiltration Membrane module and flow upward. In the lumen, the solution absorbs C 2 H 4 selectively to become a rich or laden solution. Some part of the rich solution permeates the Membrane to the permeate side (low pressure side, shell side) and other part of the solution leaves the module from its top and then it is supplied to the top of the shell side, where the absorbed gas is stripped from the rich solution and recovered as enriched ethylene. The lean solution is circulated to the lumen of the hollow fiber module by a pump. The feed side pressure was from 200 to 500 kPa and the permeate side pressure was atmospheric. Three modules with different liquid permeability and design were used in experiments. The module, in which the carrier solution permeated the Membrane at the upper part of the module, had higher performance than the module in which the solution permeated at the lower part. The module, in which the solution did not permeate the Membrane, also had high performance although a large gas–liquid separator was needed downstream of the module. The module efficiency, which is defined as the ratio of the experimentally observed ethylene recovery to the recovery calculated by assuming gas–liquid phase equilibria at both sides of the Membrane, was from 61 to almost 100%. Ethylene in the feed gas was concentrated from 80 to 99.8 mol%. The maximum C 2 H 4 permeance was 1.1 × 10 −4 mol m −2 s −1 kPa −1 (3.3 × 10 −4 cm 3 cm −2 s −1 cm Hg −1 ) and the selectivity of C 2 H 4 over C 2 H 6 was about 375 at the ethylene partial pressure of 164 kPa. The maximum ethylene recovery was 87% when the mean residence time of the feed gas in the module was 4.9 s. The Membrane was confirmed to be stable during a series of experiments.
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CO2 capture and enrichment by novel hollow fiber Facilitated Transport Membrane module with low energy consumption
Greenhouse Gas Control Technologies 7, 2005Co-Authors: Masaaki Teramoto, Satoshi Kitada, Nobuaki Ohnishi, Norifumi Matsumiya, Satoshi Shimizu, Hideto Matsuyama, Miho Nakamura, Kazuhiro Okabe, Hiroshi ManoAbstract:Publisher Summary This chapter proposes a novel gas separation method using capillary Membrane modules for simultaneous recovery and enrichment of CO2 in simulated flue gases. Several capillary Membrane modules were fabricated with different dimensions and experiments were performed at several conditions by using an amine and an amino acid as the carriers of CO2. The energy consumption of the current process is compared to those of conventional gas absorption processes and Membrane gas separation processes using polymeric Membranes. Both a feed gas and a carrier solution are supplied to the feed side (high pressure side) of the capillary ultrafiltration Membrane module and flow upward. Most of the carrier solution that contains dissolved CO2 permeates the Membrane to the permeate side (low-pressure side), where the solution liberates CO2 to become a lean solution and the lean solution is returned to the lumen of the capillary module by a pump. Experiments were performed at several operational conditions by using diethanolamine (DEA) and 2, 3-diaminopropionic acid (DAPA) as carriers. The energy required for CO2 capture, enrichment, and liquefaction was about 0.27kWh kgC02-1, which is much lower than those by using polymeric Membranes, conventional gas absorption processes consisting of absorption and stripping column. The proposed process is promising for the CO2 recovery with low energy consumption.
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Ethylene/ethane separation and concentration by hollow fiber Facilitated Transport Membrane module with permeation of silver nitrate solution
Separation and Purification Technology, 2005Co-Authors: Masaaki Teramoto, Satoshi Shimizu, Hideto Matsuyama, Norifumi MatsumiyaAbstract:Abstract Novel hollow fiber Facilitated Transport Membrane modules were used for ethylene/ethane separation using an aqueous silver nitrate solution as a carrier solution. In this Membrane system, a feed gas consisting of 80 mol% C 2 H 4 and 20 mol% C 2 H 6 and an aqueous 4 M silver nitrate solution are supplied to the lumen side (high pressure side, feed side) of a hollow fiber ultrafiltration Membrane module and flow upward. In the lumen, the solution absorbs C 2 H 4 selectively to become a rich or laden solution. Some part of the rich solution permeates the Membrane to the permeate side (low pressure side, shell side) and other part of the solution leaves the module from its top and then it is supplied to the top of the shell side, where the absorbed gas is stripped from the rich solution and recovered as enriched ethylene. The lean solution is circulated to the lumen of the hollow fiber module by a pump. The feed side pressure was from 200 to 500 kPa and the permeate side pressure was atmospheric. Three modules with different liquid permeability and design were used in experiments. The module, in which the carrier solution permeated the Membrane at the upper part of the module, had higher performance than the module in which the solution permeated at the lower part. The module, in which the solution did not permeate the Membrane, also had high performance although a large gas–liquid separator was needed downstream of the module. The module efficiency, which is defined as the ratio of the experimentally observed ethylene recovery to the recovery calculated by assuming gas–liquid phase equilibria at both sides of the Membrane, was from 61 to almost 100%. Ethylene in the feed gas was concentrated from 80 to 99.8 mol%. The maximum C 2 H 4 permeance was 1.1 × 10 −4 mol m −2 s −1 kPa −1 (3.3 × 10 −4 cm 3 cm −2 s −1 cm Hg −1 ) and the selectivity of C 2 H 4 over C 2 H 6 was about 375 at the ethylene partial pressure of 164 kPa. The maximum ethylene recovery was 87% when the mean residence time of the feed gas in the module was 4.9 s. The Membrane was confirmed to be stable during a series of experiments.
Norifumi Matsumiya - One of the best experts on this subject based on the ideXlab platform.
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selective separation of co2 by using novel Facilitated Transport Membrane at elevated temperatures and pressures
Journal of Membrane Science, 2007Co-Authors: Reza Yegani, Osamu Okada, Masaaki Teramoto, Norifumi Matsumiya, H Hirozawa, Hiroaki Himei, Teiji Takigawa, Naoto Ohmura, Hideto MatsuyamaAbstract:Abstract A novel Facilitated Transport Membrane consisting of 2,3-diaminopropionic acid (DAPA) as a selective carrier of CO 2 and PVA/PAA gel as support was developed for the removal of CO 2 from the water gas shift reactor in the hydrogen production plants. The Membrane performance was tested by the experiments on the selective separation of CO 2 from a mixture of 3.65% CO 2 , 32.9% N 2 and 63.5% H 2 O at the temperature from 125 to 160 °C and the feed gas pressure from 100 to 650 kPa. Typical observed CO 2 permeances were 3.14 × 10 −4 mol/m 2 s kPa at 125 °C and 300 kPa, 1.71 × 10 −4 at 140 °C and the feed gas pressure of 450 kPa and 1.10 × 10 −4 at 160 °C and 600 kPa, and the CO 2 /H 2 selectivities at the respective conditions were 1070, 561 and 432, respectively. Obtained results showed that the water content in the Membrane is one of the key factors, which determines the CO 2 permeance and CO 2 /N 2 selectivity. The CO 2 permeance as well as the CO 2 /N 2 selectivity increased with increasing the pressure, which might be mainly caused by increasing the water content in the Membrane. It was also found that increasing the carrier concentration could significantly enhance the Membrane performance, especially at elevated temperatures.
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Stability of gel-supported Facilitated Transport Membrane for carbon dioxide separation from model flue gas
Separation and Purification Technology, 2007Co-Authors: Kazuhiro Okabe, Norifumi Matsumiya, Hiroshi ManoAbstract:Abstract The stability of a Facilitated Transport Membrane for carbon dioxide (CO2) separation from CO2/N2 (nitrogen) mixed gas was studied. This Membrane was composed of an aqueous potassium carbonate (K2CO3) solution and a vinylalcohol–acrylate copolymer (PVA–PAA, super absorbent polymer), in which the aqueous solution was immobilized. This Facilitated Transport Membrane named a gel-supported Membrane worked properly when the PVA–PAA polymer gel held sufficient amount of water. The amount of water in the gel Membrane depended on the water vapor pressure above the Membrane. Higher water retention was observed at the K2CO3 solution because of its ionic strength. The role of the polymer gel in retaining water was not observed clearly. The aqueous K2CO3 solution contributed greatly to keeping the Membrane wet, and the polymer gel was suitable as substrate of a thin liquid Membrane. The gel-supported Membrane immobilizing an aqueous 2 mol/kg K2CO3 solution worked well even under the evacuating condition for 6 months by controlling the water vapor pressure. Sulfur dioxide (SO2) which was included in the flue gas obstructed CO2 Transportation. SO2 may have the influences of restraining CO2 from dissolving into the carrier solution and of decreasing the concentration of a carrier at the gas–liquid interface. These undesirable effects of SO2 were weakened by the addition of potassium sulfite (K2SO3), and it appeared at low concentration of 0.1 mol/kg K2SO3. Nitrogen monoxide (NO) and nitrogen dioxide (NO2), which were included in the flue gas as well, had no influence to CO2 Transportation through the Membrane. As the results of these studies, it was believed that the gel-supported Membrane had a potentiality for practical use to recover CO2 from the high humid gas mixture such as flue gas.
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Evaluation of energy consumption for separation of CO2 in flue gas by hollow fiber Facilitated Transport Membrane module with permeation of amine solution
Separation and Purification Technology, 2005Co-Authors: Norifumi Matsumiya, Masaaki Teramoto, Satoshi Kitada, Hideto MatsuyamaAbstract:Abstract Energy consumption for the separation of CO 2 in flue gas by a novel hollow fiber Facilitated Transport Membrane module was evaluated and compared with those by conventional separation processes such as gas absorption and polymeric Membrane separation. In the novel Facilitated Transport Membrane system, both a feed gas (CO 2 /N 2 mixture) and a carrier solution (aqueous diethanolamine solution) are supplied to the lumen side (feed side, high pressure side) of the hollow fiber ultrafiltration Membrane module and flow upward. The carrier solution, which contains dissolved solute gas, CO 2 in the present case, permeates the Membrane to the permeate side (low pressure side, shell side), where the solution liberates dissolved gas to become a lean solution and the lean solution is returned to the lumen side by a pump. The feed side pressure was atmospheric and the permeate side pressure was controlled in the range from 10 to 27 kPa. CO 2 in the feed gas consisting of 10% CO 2 and 90% N 2 was concentrated to higher than 99%. The effects of various system parameters, such as permeate side pressure, temperature, gas and liquid flow rates and the inner diameter of hollow fiber Membrane, on the energy consumption for CO 2 recovery were investigated. Energy consumption decreased with increasing temperature and had a minimum at an optimum permeate side pressure. The minimum energy consumption was estimated as 0.211 kWh kg-CO 2 −1 when the inner diameter of the hollow fiber was 0.8 mm. The energy consumption increased with feed gas flow rate, however, it was little influenced by liquid flow rate. The energy consumption decreased remarkably with increasing the inner diameter of the hollow fiber, and it was estimated as 0.072 kWh kg-CO 2 −1 when hollow fibers of 1.4 mm in inner diameter were used. This value is the lowest among those reported so far.
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ethylene ethane separation and concentration by hollow fiber Facilitated Transport Membrane module with permeation of silver nitrate solution
Separation and Purification Technology, 2005Co-Authors: Masaaki Teramoto, Satoshi Shimizu, Hideto Matsuyama, Norifumi MatsumiyaAbstract:Abstract Novel hollow fiber Facilitated Transport Membrane modules were used for ethylene/ethane separation using an aqueous silver nitrate solution as a carrier solution. In this Membrane system, a feed gas consisting of 80 mol% C 2 H 4 and 20 mol% C 2 H 6 and an aqueous 4 M silver nitrate solution are supplied to the lumen side (high pressure side, feed side) of a hollow fiber ultrafiltration Membrane module and flow upward. In the lumen, the solution absorbs C 2 H 4 selectively to become a rich or laden solution. Some part of the rich solution permeates the Membrane to the permeate side (low pressure side, shell side) and other part of the solution leaves the module from its top and then it is supplied to the top of the shell side, where the absorbed gas is stripped from the rich solution and recovered as enriched ethylene. The lean solution is circulated to the lumen of the hollow fiber module by a pump. The feed side pressure was from 200 to 500 kPa and the permeate side pressure was atmospheric. Three modules with different liquid permeability and design were used in experiments. The module, in which the carrier solution permeated the Membrane at the upper part of the module, had higher performance than the module in which the solution permeated at the lower part. The module, in which the solution did not permeate the Membrane, also had high performance although a large gas–liquid separator was needed downstream of the module. The module efficiency, which is defined as the ratio of the experimentally observed ethylene recovery to the recovery calculated by assuming gas–liquid phase equilibria at both sides of the Membrane, was from 61 to almost 100%. Ethylene in the feed gas was concentrated from 80 to 99.8 mol%. The maximum C 2 H 4 permeance was 1.1 × 10 −4 mol m −2 s −1 kPa −1 (3.3 × 10 −4 cm 3 cm −2 s −1 cm Hg −1 ) and the selectivity of C 2 H 4 over C 2 H 6 was about 375 at the ethylene partial pressure of 164 kPa. The maximum ethylene recovery was 87% when the mean residence time of the feed gas in the module was 4.9 s. The Membrane was confirmed to be stable during a series of experiments.
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CO2 capture and enrichment by novel hollow fiber Facilitated Transport Membrane module with low energy consumption
Greenhouse Gas Control Technologies 7, 2005Co-Authors: Masaaki Teramoto, Satoshi Kitada, Nobuaki Ohnishi, Norifumi Matsumiya, Satoshi Shimizu, Hideto Matsuyama, Miho Nakamura, Kazuhiro Okabe, Hiroshi ManoAbstract:Publisher Summary This chapter proposes a novel gas separation method using capillary Membrane modules for simultaneous recovery and enrichment of CO2 in simulated flue gases. Several capillary Membrane modules were fabricated with different dimensions and experiments were performed at several conditions by using an amine and an amino acid as the carriers of CO2. The energy consumption of the current process is compared to those of conventional gas absorption processes and Membrane gas separation processes using polymeric Membranes. Both a feed gas and a carrier solution are supplied to the feed side (high pressure side) of the capillary ultrafiltration Membrane module and flow upward. Most of the carrier solution that contains dissolved CO2 permeates the Membrane to the permeate side (low-pressure side), where the solution liberates CO2 to become a lean solution and the lean solution is returned to the lumen of the capillary module by a pump. Experiments were performed at several operational conditions by using diethanolamine (DEA) and 2, 3-diaminopropionic acid (DAPA) as carriers. The energy required for CO2 capture, enrichment, and liquefaction was about 0.27kWh kgC02-1, which is much lower than those by using polymeric Membranes, conventional gas absorption processes consisting of absorption and stripping column. The proposed process is promising for the CO2 recovery with low energy consumption.
Yang Han - One of the best experts on this subject based on the ideXlab platform.
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Simultaneous effects of temperature and vacuum and feed pressures on Facilitated Transport Membrane for CO2/N2 separation
Journal of Membrane Science, 2019Co-Authors: Yang HanAbstract:Abstract The Facilitated Transport of CO2 through an amine-containing polymeric Membrane on a nanoporous PES substrate was studied at large feed-to-permeate pressure differentials that are relevant to post-combustion carbon capture. With the selective layer reinforced mechanically by incorporation of carbon nanotubes, the carrier saturation of amino groups by excessive CO2 was observed at high feed or permeate vacuum pressure. Nearly complete carrier saturation was observed at 7 atm feed pressure or a permeate vacuum near ambient pressure. At relatively low vacuum pressures, the vacuum degree and operating temperature affected the CO2 Transport simultaneously. A vacuum pressure significantly lower than the water saturation pressure at certain temperature resulted in the dehydration of the selective layer, thereby a reduced CO2 permeance. This dehydration was mitigated at a moderate vacuum pressure. At the moderate vacuum pressure, the nanoporous PES substrate controlled the water permeation, leading to a sufficiently hydrated selective layer with high CO2 permeance and CO2/N2 selectivity. Overall, the Membrane performed well with 0.3–0.6 atm vacuum pressures at 67 °C and a feed pressure of 4 atm, achieving the best Membrane performance with a CO2 permeance of 1451 GPU and a CO2/N2 selectivity of 165.
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simultaneous effects of temperature and vacuum and feed pressures on Facilitated Transport Membrane for co2 n2 separation
Journal of Membrane Science, 2019Co-Authors: Yang HanAbstract:Abstract The Facilitated Transport of CO2 through an amine-containing polymeric Membrane on a nanoporous PES substrate was studied at large feed-to-permeate pressure differentials that are relevant to post-combustion carbon capture. With the selective layer reinforced mechanically by incorporation of carbon nanotubes, the carrier saturation of amino groups by excessive CO2 was observed at high feed or permeate vacuum pressure. Nearly complete carrier saturation was observed at 7 atm feed pressure or a permeate vacuum near ambient pressure. At relatively low vacuum pressures, the vacuum degree and operating temperature affected the CO2 Transport simultaneously. A vacuum pressure significantly lower than the water saturation pressure at certain temperature resulted in the dehydration of the selective layer, thereby a reduced CO2 permeance. This dehydration was mitigated at a moderate vacuum pressure. At the moderate vacuum pressure, the nanoporous PES substrate controlled the water permeation, leading to a sufficiently hydrated selective layer with high CO2 permeance and CO2/N2 selectivity. Overall, the Membrane performed well with 0.3–0.6 atm vacuum pressures at 67 °C and a feed pressure of 4 atm, achieving the best Membrane performance with a CO2 permeance of 1451 GPU and a CO2/N2 selectivity of 165.
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Field trial of spiral-wound Facilitated Transport Membrane module for CO2 capture from flue gas
Journal of Membrane Science, 2019Co-Authors: Yang Han, Witopo Salim, Kai K. ChenAbstract:Abstract A field trial with 1.4 m2 spiral-wound (SW) Membrane modules fabricated from an amine-containing Facilitated Transport Membrane was conducted with actual flue gas at the National Carbon Capture Center in Wilsonville, AL, U.S.A. Prior to the field test, the Membrane modules were systematically evaluated with simulated flue gas to identify the optimal operating conditions, including feed flow rate, feed pressure and operating temperature. With the actual flue gas, the Membrane modules showed ca. 1450 GPU CO2 permeance and 185 CO2/N2 selectivity at 67 °C with feed and permeate pressures of 4 and 0.3 atm, respectively. A 500-h stability was demonstrated in spite of the interference of system upsets and flue gas outages. During the field trial, carbon capture rates of better than 40% were achieved by a single SW module with coal-derived flue gas. Except for a few flue gas upsets, the CO2 purities in the captured stream were 94.5% or better on dry basis. The data obtained from this project validates the Membrane material and provide basis for the design and fabrication of full-scale SW module with a Membrane area larger than 50 m2. It should be noted that no significant amounts of Cr, As and Se were deposited onto the Membrane during this 500-h test.
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nanotube reinforced Facilitated Transport Membrane for co2 n2 separation with vacuum operation
Journal of Membrane Science, 2018Co-Authors: Yang HanAbstract:Abstract A novel Facilitated Transport Membrane was synthesized in a composite Membrane configuration with a 170-nm selective layer coated on a polyethersulfone nanoporous substrate. In the selective layer, poly(N-vinylformamide-co-vinylamine) with amino groups covalently bound to the polymer backbone was used as the fixed-site carrier and an aminoacid salt, synthesized by deprotonating sarcosine with 2-(1-piperazinyl)ethylamine, was blended as the mobile carrier. The Membrane demonstrated a CO2 permeance of 975 GPU (1 GPU = 10-6 cm3 (STP) cm-2 s-1 cmHg-1) and a CO2/N2 selectivity > 140 at 57 °C with 1 atm feed and permeate pressures. The Membrane performance was also characterized with a vacuum pulled on the permeate side to simulate actual separation process conditions. However, the rubbery selective layer of the synthesized Membrane sank into the nanoporous substrate, resulting in a drastically reduced CO2 permeance. To address this issue, multi-walled carbon nanotubes (MWNTs) wrapped by a copolymer poly(1-vinylpyrrolidone-co-vinyl acetate) were dispersed in the selective layer as reinforcement nanofillers. The gas permeation measurements showed that the incorporation of MWNTs strengthened the polymer matrix and the selective layer penetration was refrained by a 3 wt% MWNT loading. The presence of MWNTs also mitigated the polymer compaction if the feed gas was compressed.
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Nanotube-reinforced Facilitated Transport Membrane for CO2/N2 separation with vacuum operation
Journal of Membrane Science, 2018Co-Authors: Yang HanAbstract:Abstract A novel Facilitated Transport Membrane was synthesized in a composite Membrane configuration with a 170-nm selective layer coated on a polyethersulfone nanoporous substrate. In the selective layer, poly(N-vinylformamide-co-vinylamine) with amino groups covalently bound to the polymer backbone was used as the fixed-site carrier and an aminoacid salt, synthesized by deprotonating sarcosine with 2-(1-piperazinyl)ethylamine, was blended as the mobile carrier. The Membrane demonstrated a CO2 permeance of 975 GPU (1 GPU = 10-6 cm3 (STP) cm-2 s-1 cmHg-1) and a CO2/N2 selectivity > 140 at 57 °C with 1 atm feed and permeate pressures. The Membrane performance was also characterized with a vacuum pulled on the permeate side to simulate actual separation process conditions. However, the rubbery selective layer of the synthesized Membrane sank into the nanoporous substrate, resulting in a drastically reduced CO2 permeance. To address this issue, multi-walled carbon nanotubes (MWNTs) wrapped by a copolymer poly(1-vinylpyrrolidone-co-vinyl acetate) were dispersed in the selective layer as reinforcement nanofillers. The gas permeation measurements showed that the incorporation of MWNTs strengthened the polymer matrix and the selective layer penetration was refrained by a 3 wt% MWNT loading. The presence of MWNTs also mitigated the polymer compaction if the feed gas was compressed.
Maybritt Hagg - One of the best experts on this subject based on the ideXlab platform.
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Fabrication and Evaluation of a Blend Facilitated Transport Membrane for CO2/CH4 Separation
Industrial & Engineering Chemistry Research, 2015Co-Authors: Liyuan Deng, Maybritt HaggAbstract:This Article focuses on the optimization of the fabrication procedure and preparation conditions of a polyvinylamine/poly(vinyl alcohol) (PVAm/PVA) blend Membrane with respect to its CO2/CH4 separation performance at elevated pressures and the up-scaling of the PVAm/PVA blend flat sheet Membrane for pilot scale tests. Experiments show that the optimized Membrane preparation conditions for CO2/CH4 separation are different from those for CO2/N2 separation, especially when operating at elevated pressures, which is considered for applications such as biogas upgrading. The effects of Membrane preparation conditions were investigated and Membrane CO2/CH4 separation performance was evaluated at elevated pressures (CO2 partial pressure up to 5.6 bar). Up-scaled flat sheet Membranes (300 × 300 mm) were prepared using a dip-coating procedure. The selection of the support substrate and aging of the Membrane were also investigated. A CO2 permeance of up to 0.58 m3/ (m2 h bar), and a CO2/CH4 selectivity of up to 45 we...
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fabrication and evaluation of a blend Facilitated Transport Membrane for co2 ch4 separation
Industrial & Engineering Chemistry Research, 2015Co-Authors: Liyuan Deng, Maybritt HaggAbstract:This Article focuses on the optimization of the fabrication procedure and preparation conditions of a polyvinylamine/poly(vinyl alcohol) (PVAm/PVA) blend Membrane with respect to its CO2/CH4 separation performance at elevated pressures and the up-scaling of the PVAm/PVA blend flat sheet Membrane for pilot scale tests. Experiments show that the optimized Membrane preparation conditions for CO2/CH4 separation are different from those for CO2/N2 separation, especially when operating at elevated pressures, which is considered for applications such as biogas upgrading. The effects of Membrane preparation conditions were investigated and Membrane CO2/CH4 separation performance was evaluated at elevated pressures (CO2 partial pressure up to 5.6 bar). Up-scaled flat sheet Membranes (300 × 300 mm) were prepared using a dip-coating procedure. The selection of the support substrate and aging of the Membrane were also investigated. A CO2 permeance of up to 0.58 m3/ (m2 h bar), and a CO2/CH4 selectivity of up to 45 we...
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natural gas sweetening the effect on co2 ch4 separation after exposing a Facilitated Transport Membrane to hydrogen sulfide and higher hydrocarbons
Journal of Membrane Science, 2012Co-Authors: Mohammad Washim Uddin, Maybritt HaggAbstract:Abstract The PVAm/PVA blend composite Membrane was exposed to synthetic natural gas mixtures containing aggressive gases like hydrogen sulfide (H 2 S) at a concentration of 1 mol% and H 2 S in combination with the condensable hydrocarbons n -hexane and propane. The effect on the performance of the Membrane was studied under different relative humidity conditions and the possible interactions between the Membrane and impurities were analyzed. The performance of the Membrane was found to be reduced at low humidity conditions due to H 2 S induced conditioning and sorption of n -hexane both in the polysulfone support and PVAm/PVA selective layer, while at high relative humidity the CO 2 Facilitated Transport helps the Membrane to retain its performance to a value very close to that of a fresh Membrane. The CO 2 Facilitated Transport is closely related to the Membrane swelling. The combined effects of H 2 S and hydrocarbons are comparable to the effects of H 2 S alone. Under high humidified conditions, the maximum CO 2 permeance loss is 18% and the maximum CO 2 /CH 4 selectivity loss is 16% after two weeks exposure at this harsh and humidified conditions. Our conclusion based on the current investigations, is that the aggressive environment does not introduce permanent damage to the material and the PVAm/PVA blend Membrane is keeping its separation performance quite well after the exposure to H 2 S and hydrocarbons, and may have a potential for being used in natural gas sweetening.
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effect of monoethylene glycol and triethylene glycol contamination on co2 ch4 separation of a Facilitated Transport Membrane for natural gas sweetening
Journal of Membrane Science, 2012Co-Authors: Mohammad Washim Uddin, Maybritt HaggAbstract:Abstract A CO 2 -Facilitated Transport composite Membrane made of PVAm/PVA blend was exposed to a humid synthetic natural gas mixture with monoethylene glycol (MEG) and triethylene glycol (TEG). The effects of different parameters such as relative humidity, types of impurities, exposure temperature were analyzed to understand the real mechanism of interaction and their effects on the CO 2 /CH 4 separation performance. Both the CO 2 and CH 4 permeances were increased after the exposure of hygroscopic MEG and TEG, except in one case. The CO 2 /CH 4 selectivity was slightly reduced by the exposure to MEG since MEG plasticized the Membrane a little bit, whereas the selectivity was slightly increased by the exposure to TEG. Water plays a significant role in the overall performance. For this Facilitated Transport PVAm/PVA blend Membrane, the high relative humidity helps the Facilitated Transport of CO 2 through the PVAm/PVA blend composite Membrane to maintain its permeation properties to a value very close to that of a fresh Membrane. This study reports the effect of MEG and TEG on the CO 2 /CH 4 separation of a PVAm/PVA blend composite Membrane, and documents a positive step forward for using this Membrane in a rigorous environment of natural gas sweetening where entrained glycol is considered as a potential threat to the Membrane.
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a feasibility study of co2 capture from flue gas by a Facilitated Transport Membrane
Journal of Membrane Science, 2010Co-Authors: Arshad Hussain, Maybritt HaggAbstract:Abstract Carbon dioxide accounts for about 80% of all greenhouse gases (GHG) and thus becomes the major source responsible for global warming which is considered as the greatest environmental challenge the world is facing. The efforts to control the GHG emissions include the recovery of CO 2 from flue gas. In this work, a feasibility analysis has been carried out with an in-house Membrane program interfaced within process simulation program (AspenHysys) to investigate the influence of process parameters on the energy demand and flue gas processing cost. A novel CO 2 -selective Membrane with the Facilitated Transport mechanism has been employed to capture CO 2 from the flue gas mixtures. The results show that a Membrane process using the Facilitated Transport Membrane is feasible, even for low CO 2 concentration (10%) in flue gas, compared to amine absorption in terms of energy requirement and it is possible to achieve more than 90% CO 2 recovery and with a purity in the permeate above 90% CO 2 . Different process configurations are presented showing the effect of process conditions on the energy demand and gas processing cost to obtain 90% recovery and 90% purity.
