The Experts below are selected from a list of 24201 Experts worldwide ranked by ideXlab platform
Penchi Chiang - One of the best experts on this subject based on the ideXlab platform.
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optimization of resin wafer electrodeionization for brackish Water Desalination
Separation and Purification Technology, 2018Co-Authors: Pochih Tseng, Huaili Zheng, Xinyu Zheng, Penchi ChiangAbstract:Abstract Resin wafer electrodeionization is an energy-efficient technology for brackish Water Desalination without the use of harmful chemicals. In this study, the performance of resin wafer electrodeionization under different applied voltages and feed flow rates was measured for a feed salt concentration of 3.0 g L −1 . The results indicated that a salt removal efficiency of 94% could be achieved. In addition, the removal kinetics of NaCl from the brackish Water was studied via a first-order kinetic model. The maximum kinetic rate constant was found to be 0.091 min −1 at a cell voltage of 2.53 V. The kinetic rate constants varied with the applied voltage and feed flow rate to the 1.52 and 0.33 power respectively. Furthermore, the productivity and energy consumption were balanced by using the response surface methodology. The optimized operating conditions should be set at an applied voltage of 2.28 V per cell pair with a feed flow rate of 810 mL min −1 , corresponding to a productivity of 55.5 L h −1 m −2 at an energy consumption of 0.66 kWh m −3 . Compared with other Water Desalination processes, resin wafer electrodeionization can offer relatively a higher energy-efficient performance for the brackish Water Desalination.
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Development of a Resin Wafer Electrodeionization Process for Impaired Water Desalination with High Energy Efficiency and Productivity
ACS Sustainable Chemistry & Engineering, 2017Co-Authors: Shu-yuan Pan, Seth W. Snyder, Yupo J. Lin, Penchi ChiangAbstract:Use of groundWater, reclaimed Water, and other impaired Water sources is a critical strategy for fresh surface Water conservation. Because impaired Water Desalination by reverse osmosis is energy-intensive, a robust ion-exchange resin wafer electrodeionization technology was developed to conserve energy during impaired Water Desalination. The loose ion-exchange resin beads were immobilized and molded to form a porous resin wafer material and utilized for impaired Water Desalination. In this study, the impaired Water Desalination using resin wafer electrodeionization was evaluated along with various key performance indicators, including current efficiency, energy efficiency, and productivity. Results suggest that resin wafer electrodeionization can improve energy efficiency to >35% in comparison to that of reverse osmosis (normally ∼12%) for impaired Water Desalination. The energy consumption of resin wafer electrodeionization was found to be 0.354–0.657 kWh/m3 with a productivity of 20.1–41.3 L h–1 m–2 (i...
Xinyu Zheng - One of the best experts on this subject based on the ideXlab platform.
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optimization of resin wafer electrodeionization for brackish Water Desalination
Separation and Purification Technology, 2018Co-Authors: Pochih Tseng, Huaili Zheng, Xinyu Zheng, Penchi ChiangAbstract:Abstract Resin wafer electrodeionization is an energy-efficient technology for brackish Water Desalination without the use of harmful chemicals. In this study, the performance of resin wafer electrodeionization under different applied voltages and feed flow rates was measured for a feed salt concentration of 3.0 g L −1 . The results indicated that a salt removal efficiency of 94% could be achieved. In addition, the removal kinetics of NaCl from the brackish Water was studied via a first-order kinetic model. The maximum kinetic rate constant was found to be 0.091 min −1 at a cell voltage of 2.53 V. The kinetic rate constants varied with the applied voltage and feed flow rate to the 1.52 and 0.33 power respectively. Furthermore, the productivity and energy consumption were balanced by using the response surface methodology. The optimized operating conditions should be set at an applied voltage of 2.28 V per cell pair with a feed flow rate of 810 mL min −1 , corresponding to a productivity of 55.5 L h −1 m −2 at an energy consumption of 0.66 kWh m −3 . Compared with other Water Desalination processes, resin wafer electrodeionization can offer relatively a higher energy-efficient performance for the brackish Water Desalination.
Ruan Guo - One of the best experts on this subject based on the ideXlab platform.
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DEVELOP THE SEA Water Desalination INDUSTRY AND RELIEVE THE FRESH Water CRISIS
Coastal Engineering, 2001Co-Authors: Ruan GuoAbstract:In this paper, the domestic Water resource status is addressed, the developing conditions of sea Water Desalination technology at home and abroad are introduced, the applicable ranges and developing trends of different sea Water Desalination technologies are discussed, the advantages and disadvantages for China to accomplish the sea Water Desalination industrialization are analysed, and the measures for sea Water Desalination industrialization are proposed.
Shu-yuan Pan - One of the best experts on this subject based on the ideXlab platform.
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Development of a Resin Wafer Electrodeionization Process for Impaired Water Desalination with High Energy Efficiency and Productivity
ACS Sustainable Chemistry & Engineering, 2017Co-Authors: Shu-yuan Pan, Seth W. Snyder, Yupo J. Lin, Penchi ChiangAbstract:Use of groundWater, reclaimed Water, and other impaired Water sources is a critical strategy for fresh surface Water conservation. Because impaired Water Desalination by reverse osmosis is energy-intensive, a robust ion-exchange resin wafer electrodeionization technology was developed to conserve energy during impaired Water Desalination. The loose ion-exchange resin beads were immobilized and molded to form a porous resin wafer material and utilized for impaired Water Desalination. In this study, the impaired Water Desalination using resin wafer electrodeionization was evaluated along with various key performance indicators, including current efficiency, energy efficiency, and productivity. Results suggest that resin wafer electrodeionization can improve energy efficiency to >35% in comparison to that of reverse osmosis (normally ∼12%) for impaired Water Desalination. The energy consumption of resin wafer electrodeionization was found to be 0.354–0.657 kWh/m3 with a productivity of 20.1–41.3 L h–1 m–2 (i...
Nidal Hilal - One of the best experts on this subject based on the ideXlab platform.
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Mechanical properties of Water Desalination and wasteWater treatment membranes
Desalination, 2017Co-Authors: Kui Wang, Nidal Hilal, Ahmed A. Abdalla, Mohammad A. Khaleel, Marwan K. KhraishehAbstract:Abstract Applications of membrane technology in Water Desalination and wasteWater treatment have increased significantly in the past few decades due to its many advantages over other Water treatment technologies. Water treatment membranes provide high flux and contaminant rejection ability and require good mechanical strength and durability. Thus, assessing the mechanical properties of Water treatment membranes is critical not only to their design, but also for studying their failure mechanisms, including the surface damage, mechanical and chemical ageing, delamination and loss of dimensional stability of the membranes. The various experimental techniques to assess the mechanical properties of wasteWater treatment and Desalination membranes are reviewed. Uniaxial tensile test, bending test, dynamic mechanical analysis, nanoindentation and bursting tests are the most widely used mechanical characterization methods for Water treatment membranes. Mechanical degradations induced by fouling, chemical cleaning as well as membrane delamination are then discussed. Moreover, in order to study the membranes mechanical responses under similar loading conditions, the stress-state of the membranes are analyzed and advanced mechanical testing approaches are proposed. Some perspectives are highlighted to study the structure-properties relationship for wasteWater treatment and Water Desalination membranes.
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Water Desalination by forward (direct) osmosis phenomenon: A comprehensive review
Desalination, 2015Co-Authors: Muhammad Qasim, Naif A. Darwish, Sarper Sarp, Nidal HilalAbstract:Abstract Forward osmosis (FO) is a developing technology, which is thought to have a potential of producing potable Water in an energy-efficient manner. FO is driven by the natural osmotic pressure difference across a semi-permeable membrane. Despite a number of patents and peer-reviewed papers published for different methods and systems for Water Desalination by FO, this technology is still in its infancy because of some serious limitations and challenges. Due to many environment and energy related challenges, FO-based Desalination has recently gained worldwide attention because it operates at low levels of pressure and temperature. Compared to traditional pressure-driven membrane processes, FO offers recognized advantages including reversible membrane fouling, and potentially less operation energy. The purpose of this review paper is to provide the state-of-the-art of the physical principles, recent developments, and applications of forward osmosis in the area of Water Desalination. Strengths and limitations of the applications of FO processes in the area of Water Desalination are highlighted and the future of FO technology is considered.
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A combined ion exchange–nanofiltration process for Water Desalination: III. Pilot scale studies
Desalination, 2015Co-Authors: Nidal Hilal, Victor Kochkodan, Hasan Al Abdulgader, Stephen Mandale, Saad A. AljlilAbstract:Abstract This paper describes pilot scale studies on a novel combined ion-exchange (IX)–nanofiltration (NF) process for Water Desalination. Based on the preliminary results of small scale IX and NF studies, a pilot scale hybrid IX–NF system for Water Desalination has been designed and built for testing and evaluation. Optimization of the operability of the designed pilot system has been done and the obtained results have proved the feasibility of the hybrid IX–NF Desalination process. The IX section of the pilot system filled with Purolite A500TLSO4 resin managed to treat feed Waters at various salinities and composition and to convert > 95% of chloride ions to sulphate ions. The IX treated salty Water was further desalinated using NF90 and NF270 spiral wound 4040 industrial membrane modules. The NF membranes were able to maintain > 99% rejection of sulphate ions. It was found that NF reject stream, which is rich in sulphate content, may be used for regeneration of the exhausted IX resins and thus no external regeneration solution is required for the hybrid IX–NF process of Water Desalination. An incorporation of IX stage in the hybrid process of Water Desalination allows membrane Desalination at lower operating pressures thus reducing the energy consumption.
