The Experts below are selected from a list of 3105 Experts worldwide ranked by ideXlab platform
N. Othman - One of the best experts on this subject based on the ideXlab platform.
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Extraction of reactive dye via synergistic Aliquat 336/D2EHPA using emulsion liquid membrane system
Korean Journal of Chemical Engineering, 2020Co-Authors: Raja Norimie Raja Sulaiman, Hilmi Abdul Rahman, Muhammad Bukhari Rosly, Norela Jusoh, N. Othman, Norul Fatiha Mohd NoahAbstract:Facilitated transport of Orange 3R was performed by means of emulsion liquid membrane (ELM) technique containing double extractants of Aliquat 336 and D2EHPA as extractant and synergist extractant, respectively. Cooking palm oil, sorbitan monooleate (Span 80), and sodium hydroxide were used as diluent, surfactant and Stripping Agent, respectively. Several parameters influencing the extraction of Orange 3R via ELM, namely effect of extraction time, agitator speed, Span 80 concentration and treatment ratio, were experimentally investigated and optimized using response surface methodology (RSM). Results demonstrated that about 91% of Orange 3R was successfully extracted under optimum conditions of 12 minutes of extraction time, 413 rpm of agitator speed, 3.2% (w/v) of sorbitan monooleate, and 1:9.8 of treatment ratio. Additionally, the aforementioned optimum conditions were found to be more suitable to treat low concentration of Orange 3R (less than 100 ppm) from simulated textile wastewater. The findings reveal that reactive Orange 3R dye is able to be selectively extracted using double extractants via sustainable ELM process as well as providing high potential application in the dye removal from industrial textile wastewater.
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easy removing of phenol from wastewater using vegetable oil based organic solvent in emulsion liquid membrane process
Chinese Journal of Chemical Engineering, 2017Co-Authors: N. Othman, Norela Jusoh, Norul Fatiha Mohd Noah, Lim Yin Shu, Zing Yi Ooi, Mariani Idroas, Masahiro GotoAbstract:Abstract Phenol is considered as pollutant due to its toxicity and carcinogenic effect. Thus, variety of innovative methods for separation and recovery of phenolic compounds is developed in order to remove the unwanted phenol from wastewater and obtain valuable phenolic compound. One of potential method is extraction using green based liquid organic solvent. Therefore, the feasibility of using palm oil was investigated. In this research, palm oil based organic phase was used as diluents to treat a simulated wastewater containing 300 × 10 -6 of phenol solution using emulsion liquid membrane process (ELM). The stability of water-in-oil (W/O) emulsion on diluent composition and the parameters affecting the phenol removal efficiency and stability of the emulsion; such as emulsification speed, emulsification time, agitation speed, surfactant concentration, pH of external phase, contact time, Stripping Agent concentration and treat ratio were carried out. The results of ELM study showed that at ratio 7 to 3 of palm oil to kerosene, 5 min and 1300 r·min − 1 of emulsification process the stabile primary emulsion were formed. Also, no carrier is needed to facilitate the phenol extraction. In experimental conditions of 500 r·min − 1 of agitation speed, 3% Span 80, pH 8 of external phase, 5 min of contact time, 0.1 mol·L − 1 NaOH as Stripping Agent and 1:10 of treat ratio, the ELM process was very promising for removing the phenol from the wastewater. The extraction performance at about 83% of phenol was removed for simulated wastewater and an enrichment of phenol in recovery phase as phenolate compound was around 11 times.
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response surface optimization of kraft lignin recovery from pulping wastewater through emulsion liquid membrane process
Desalination and Water Treatment, 2016Co-Authors: N. Othman, Norul Fatiha Mohd NoahAbstract:Kraft lignin (KL) represents a key sustainable source of biomass for transformation into biofuels and high-value specialty chemicals. Excess lignin in pulping wastewater creates pollution problems, hence affecting human. Thus, the KL recovery from pulping wastewater by emulsion liquid membrane was investigated and optimized using response surface methodology in this study. The liquid membrane was prepared by dissolving carrier tricaprylylmethylammonium chloride (Aliquat 336) and hydrophobic surfactant sorbitan monooleate (Span 80) in kerosene (diluent) with sodium bicarbonate (NaHCO3) as the internal Stripping phase and 2-ethyl-1-hexanol as the modifier. The comparison between the experimentally optimized, and the RSM optimized values was accomplished by optimizing the following parameters: carrier and Stripping Agent concentration and treat ratio of emulsion to feed phase. The maximum KL recovery of 97% was obtained under the optimum condition at 0.012 M of Aliquat 336, 0.32 M of NaHCO3, and 1:4.8 of treat ratio.
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the role of internal droplet size on emulsion stability and the extraction performance of kraft lignin removal from pulping wastewater in emulsion liquid membrane process
Journal of Dispersion Science and Technology, 2016Co-Authors: N. Othman, Ching Li ChooAbstract:It has been discovered that the size of internal droplets in primary emulsion determines emulsion dispersion and stability in emulsion liquid membrane (ELM) process for removal of lignin from pulping wastewater. Generally, primary emulsion contains kerosene, Aliquat 336, sodium bicarbonate, as well as Span 80 as diluent, carrier, internal phase, and surfactant, respectively. Hence, this study had looked into the parameters, including concentration of surfactant, carrier, and Stripping Agent; emulsification speed and time; as well as agitation speed and time. As a result, the diameter of the smallest droplets (1.4 µm) was formed with maximum lignin extraction (95%), minimum swelling (5%) at 3% (w/v) surfactant concentration, 12,000 rpm of emulsification within 5 minutes, 0.01 M of Aliquat 336, 0.1 M of NaHCO3, and 250 rpm of extraction within 10 minutes.
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recovery of kraft lignin from pulping wastewater via emulsion liquid membrane process
Biotechnology Progress, 2015Co-Authors: Norlisa Harruddin, N. OthmanAbstract:Lignin represents a key sustainable source of biomass for transformation into biofuels and high-value specialty chemicals. Excess of lignin that imparts brownish dark coloration in pulping wastewater causes adverse pollution problems, hence affecting human. Therefore, there is a necessity for removal and recovery of lignin from wastewater. In this research, emulsion liquid membrane (ELM) technology has been applied. This study involved studies on liquid membrane formulation, stability of emulsion and extraction of lignin from simulated kraft lignin solution. An optimization of kraft lignin recovery from real pulping wastewater was performed using the response surface methodology (RSM). An ELM extraction model was developed to predict the extraction performance. The liquid membrane formulation was investigated on the choice of carrier, diluent and Stripping Agent using liquid-liquid extraction. ELM stability was determined at different surfactant concentrations, homogenizer speed, emulsifying time and agitation speed. Several important parameters governing the extraction process of lignin including concentration of carrier and Stripping Agents, treat ratio and extraction time were investigated. The liquid membrane formulation contains kerosene as a diluent, tricaprylmethylammonium chloride (Aliquat 336) as a carrier, sorbitan monooleate (Span 80) as a surfactant, 2- ethyl-1-hexanol as a modifer and sodium bicarbonate (NaHCO3) as a Stripping Agent. The results depicted that the most stable emulsion was observed at 3 % (w/v) of Span 80, 12000 rpm of homogenizer speed, 5 min of emulsification time and 250 rpm of agitation speed. At the optimum condition of 10 min of extraction time, 0.007 M of Aliquat 336, 0.1 M of NaHCO3 and 1:5 of treat ratio, the performance of extraction, Stripping and recovery was 95%, 100% and 98% respectively in a one step process. The optimization by RSM showed that 97% of lignin was recovered at 0.012 M of Aliquat 336, 0.32 M of NaHCO3 and 1:4.8 of treat ratio. In addition, the developed model was accepted to predict the kraft lignin extraction as the simulation results were consistent with the experimental result at the optimum condition. Therefore, ELM process is a promising technology to recover lignin from pulping wastewater while solving environmental problems simultaneously.
Aloke Kumar Ghoshal - One of the best experts on this subject based on the ideXlab platform.
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transportation of catechin c using physiologically benign vegetable oil as liquid membrane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Mriganka Sekhar Manna, Kamal Kumar Bhatluri, Prabirkumar Saha, Aloke Kumar GhoshalAbstract:This paper presents an experimental study on the simultaneous extraction and recovery of catechin through bulk liquid membrane (BLM). Various environmentally benign solvents, namely vegetable oils, have been used as liquid membrane along with various transport-enhancing carrier Agents to identify the best solute–carrier combination that would yield optimum performance of the BLM. Tributyl phosphate (TBP) (carrier) in sunflower oil (SFO) (solvent) is found to be the best among the tested combinations. Initially two-phase (feed–membrane) equilibrium studies have been carried out in order to study the effects of operating conditions, namely pH, temperature, initial feed concentration, and carrier concentration, on the equilibrium distribution. Based on these results, simultaneous extraction and recovery of the catechin have been carried out in a BLM type liquid membrane configuration using ethanol as the Stripping Agent and the optimum operating conditions are redefined accordingly. Seventy percent extractio...
Mriganka Sekhar Manna - One of the best experts on this subject based on the ideXlab platform.
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transportation of catechin c using physiologically benign vegetable oil as liquid membrane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Mriganka Sekhar Manna, Kamal Kumar Bhatluri, Prabirkumar Saha, Aloke Kumar GhoshalAbstract:This paper presents an experimental study on the simultaneous extraction and recovery of catechin through bulk liquid membrane (BLM). Various environmentally benign solvents, namely vegetable oils, have been used as liquid membrane along with various transport-enhancing carrier Agents to identify the best solute–carrier combination that would yield optimum performance of the BLM. Tributyl phosphate (TBP) (carrier) in sunflower oil (SFO) (solvent) is found to be the best among the tested combinations. Initially two-phase (feed–membrane) equilibrium studies have been carried out in order to study the effects of operating conditions, namely pH, temperature, initial feed concentration, and carrier concentration, on the equilibrium distribution. Based on these results, simultaneous extraction and recovery of the catechin have been carried out in a BLM type liquid membrane configuration using ethanol as the Stripping Agent and the optimum operating conditions are redefined accordingly. Seventy percent extractio...
Weiyang Fei - One of the best experts on this subject based on the ideXlab platform.
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Lithium recovery from salt lake brine by counter-current extraction using tributyl phosphate/FeCl3 in methyl isobutyl ketone
Hydrometallurgy, 2017Co-Authors: Wei Xiang, Shengke Liang, Wei Qin, Zhiyong Zhou, Weiyang FeiAbstract:Abstract Salt lakes in northwest China have rich lithium reserves. However, because of their high Mg/Li ratios, lithium recovery is very difficult. In this work, lithium was recovered from Qarhan salt lake using counter-current extraction. The Li + ions were extracted using tributyl phosphate (TBP) in methyl isobutyl ketone (MIBK) as the extractant and FeCl 3 as the coextractant. The process involved four sections: extraction, washing, Stripping and regeneration. The optimal conditions for each section were first determined based on equilibrium data. Then the process was conducted in a 10-stage mixer–settler with LiCl/NaCl as the washing Agent, HCl/NaCl as the Stripping Agent, and NaOH/NaCl as the regenerating Agent. The operation was stable over 14 cycles. The overall recovery of lithium was higher than 98% and the Mg/Li molar ratio changed from 94.8 in salt lake brine to 0.03 in the Stripping solution. The results show that solvent extraction is a highly effective method for lithium recovery from salt lake brines with high Mg/Li ratios.
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lithium recovery from salt lake brine by counter current extraction using tributyl phosphate fecl3 in methyl isobutyl ketone
Hydrometallurgy, 2017Co-Authors: Wei Xiang, Shengke Liang, Wei Qin, Zhiyong Zhou, Weiyang FeiAbstract:Abstract Salt lakes in northwest China have rich lithium reserves. However, because of their high Mg/Li ratios, lithium recovery is very difficult. In this work, lithium was recovered from Qarhan salt lake using counter-current extraction. The Li + ions were extracted using tributyl phosphate (TBP) in methyl isobutyl ketone (MIBK) as the extractant and FeCl 3 as the coextractant. The process involved four sections: extraction, washing, Stripping and regeneration. The optimal conditions for each section were first determined based on equilibrium data. Then the process was conducted in a 10-stage mixer–settler with LiCl/NaCl as the washing Agent, HCl/NaCl as the Stripping Agent, and NaOH/NaCl as the regenerating Agent. The operation was stable over 14 cycles. The overall recovery of lithium was higher than 98% and the Mg/Li molar ratio changed from 94.8 in salt lake brine to 0.03 in the Stripping solution. The results show that solvent extraction is a highly effective method for lithium recovery from salt lake brines with high Mg/Li ratios.
Kamal Kumar Bhatluri - One of the best experts on this subject based on the ideXlab platform.
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transportation of catechin c using physiologically benign vegetable oil as liquid membrane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Mriganka Sekhar Manna, Kamal Kumar Bhatluri, Prabirkumar Saha, Aloke Kumar GhoshalAbstract:This paper presents an experimental study on the simultaneous extraction and recovery of catechin through bulk liquid membrane (BLM). Various environmentally benign solvents, namely vegetable oils, have been used as liquid membrane along with various transport-enhancing carrier Agents to identify the best solute–carrier combination that would yield optimum performance of the BLM. Tributyl phosphate (TBP) (carrier) in sunflower oil (SFO) (solvent) is found to be the best among the tested combinations. Initially two-phase (feed–membrane) equilibrium studies have been carried out in order to study the effects of operating conditions, namely pH, temperature, initial feed concentration, and carrier concentration, on the equilibrium distribution. Based on these results, simultaneous extraction and recovery of the catechin have been carried out in a BLM type liquid membrane configuration using ethanol as the Stripping Agent and the optimum operating conditions are redefined accordingly. Seventy percent extractio...
