The Experts below are selected from a list of 1512 Experts worldwide ranked by ideXlab platform
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, Zhiyong Zhou, Shengke Liang, Wei Qin, 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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extraction equilibria of lithium with Tributyl Phosphate diisobutyl ketone acetophenone methyl isobutyl ketone and 2 heptanone in kerosene and fecl3
Industrial & Engineering Chemistry Research, 2013Co-Authors: Zhiyong Zhou, Shengke Liang, Weiyang FeiAbstract:The extraction equilibrium behavior of Li by Tributyl Phosphate (TBP), diisobutyl ketone, acetophenone, methyl isobutyl ketone, and 2-heptanone in kerosene were investigated. The partition coefficient of Li with TBP in kerosene decreased significantly when the volume concentration of TBP was greater than 60%. The values derived for the partition coefficients of four selected ketones in kerosene were smaller than that of TBP in kerosene. The stoichiometric coefficients between TBP and Li, the stoichiometric coefficients between the four selected ketones and Li, and the apparent equilibrium constant for the extraction reaction equation for TBP and the four ketones in kerosene were obtained. The tendency in extraction with the TBP and four selected ketones in kerosene can be predicted from these parameters. The polar solvents used as diluents for TBP can yield higher Li partition coefficients, strong dilution effects for TBP, and strong polarity and low density of the extracting solvents formed with both pol...
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Recovery of Lithium Using Tributyl Phosphate in Methyl Isobutyl Ketone and FeCl3
Industrial & Engineering Chemistry Research, 2012Co-Authors: Zhiyong Zhou, Shengke Liang, Wei Qin, Tan Yuanzhong, Weiyang FeiAbstract:Lithium recovery from salt-lake brines was explored using the extraction equilibria of lithium with Tributyl Phosphate (TBP) in methyl isobutyl ketone (MIBK), with FeCl3 coextractant, for various v...
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extraction equilibria of lithium with Tributyl Phosphate in kerosene and fecl3
Journal of Chemical & Engineering Data, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Yang Liu, Weiyang FeiAbstract:To explore the feasibility of extracting lithium metal from brine sources, three salts, MgCl2, CaCl2, and NH4Cl, were selected as chloride sources, and the extraction equilibrium of lithium was studied with Tributyl Phosphate (TBP) in kerosene and FeCl3 as a coextracting agent at different values of Fe/Li. The extraction mechanism for lithium with TBP in kerosene and FeCl3 as a coextracting agent was investigated too. The results showed that the extraction of the lithium ion is a cation-exchange reaction, and the extraction of iron ion is the precondition of the extraction of lithium ion. All of the extractability of the iron ion increased with the chloride concentration with MgCl2, CaCl2, and NH4Cl as chloride sources, and the extraction capacity of lithium ion followed the sequence: MgCl2 > CaCl2 > NH4Cl, with recoveries from MgCl2 as chloride sources being much higher than that for CaCl2 and NH4Cl as chloride sources at all values of Fe/Li. There exists competitiveness between Li+ and NH4+, Ca2+, and M...
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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl3
Chinese Journal of Chemical Engineering, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Weiyang FeiAbstract:Abstract To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources, the complexes formed from Tributyl Phosphate (TBP) and methyl isobutyl ketone (MIBK) with lithium were investigated using FeCl 3 as coextracting agent. Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(III) complex with lithium was obtained by regressing the experimental data. It is found that the stoichiometry of tetrachloroferrate(III) to lithium in the complex is 1 : U1 with either TBP or MIBK as extractant in kerosene. The stoichiometry of the complex of TBP with Li was 1 : U1 and that of MIBK with Li was 2 : U1. The formed complexes of TBP and MIBK with lithium are determined to be LiFeCl 4 ·TBP and LiFeCl 4 2MIBK, respectively, according to the rule of neutralization.
Zhiyong Zhou - 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, Zhiyong Zhou, Shengke Liang, Wei Qin, 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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extraction equilibria of lithium with Tributyl Phosphate diisobutyl ketone acetophenone methyl isobutyl ketone and 2 heptanone in kerosene and fecl3
Industrial & Engineering Chemistry Research, 2013Co-Authors: Zhiyong Zhou, Shengke Liang, Weiyang FeiAbstract:The extraction equilibrium behavior of Li by Tributyl Phosphate (TBP), diisobutyl ketone, acetophenone, methyl isobutyl ketone, and 2-heptanone in kerosene were investigated. The partition coefficient of Li with TBP in kerosene decreased significantly when the volume concentration of TBP was greater than 60%. The values derived for the partition coefficients of four selected ketones in kerosene were smaller than that of TBP in kerosene. The stoichiometric coefficients between TBP and Li, the stoichiometric coefficients between the four selected ketones and Li, and the apparent equilibrium constant for the extraction reaction equation for TBP and the four ketones in kerosene were obtained. The tendency in extraction with the TBP and four selected ketones in kerosene can be predicted from these parameters. The polar solvents used as diluents for TBP can yield higher Li partition coefficients, strong dilution effects for TBP, and strong polarity and low density of the extracting solvents formed with both pol...
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Recovery of Lithium Using Tributyl Phosphate in Methyl Isobutyl Ketone and FeCl3
Industrial & Engineering Chemistry Research, 2012Co-Authors: Zhiyong Zhou, Shengke Liang, Wei Qin, Tan Yuanzhong, Weiyang FeiAbstract:Lithium recovery from salt-lake brines was explored using the extraction equilibria of lithium with Tributyl Phosphate (TBP) in methyl isobutyl ketone (MIBK), with FeCl3 coextractant, for various v...
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extraction equilibria of lithium with Tributyl Phosphate in kerosene and fecl3
Journal of Chemical & Engineering Data, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Yang Liu, Weiyang FeiAbstract:To explore the feasibility of extracting lithium metal from brine sources, three salts, MgCl2, CaCl2, and NH4Cl, were selected as chloride sources, and the extraction equilibrium of lithium was studied with Tributyl Phosphate (TBP) in kerosene and FeCl3 as a coextracting agent at different values of Fe/Li. The extraction mechanism for lithium with TBP in kerosene and FeCl3 as a coextracting agent was investigated too. The results showed that the extraction of the lithium ion is a cation-exchange reaction, and the extraction of iron ion is the precondition of the extraction of lithium ion. All of the extractability of the iron ion increased with the chloride concentration with MgCl2, CaCl2, and NH4Cl as chloride sources, and the extraction capacity of lithium ion followed the sequence: MgCl2 > CaCl2 > NH4Cl, with recoveries from MgCl2 as chloride sources being much higher than that for CaCl2 and NH4Cl as chloride sources at all values of Fe/Li. There exists competitiveness between Li+ and NH4+, Ca2+, and M...
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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl3
Chinese Journal of Chemical Engineering, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Weiyang FeiAbstract:Abstract To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources, the complexes formed from Tributyl Phosphate (TBP) and methyl isobutyl ketone (MIBK) with lithium were investigated using FeCl 3 as coextracting agent. Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(III) complex with lithium was obtained by regressing the experimental data. It is found that the stoichiometry of tetrachloroferrate(III) to lithium in the complex is 1 : U1 with either TBP or MIBK as extractant in kerosene. The stoichiometry of the complex of TBP with Li was 1 : U1 and that of MIBK with Li was 2 : U1. The formed complexes of TBP and MIBK with lithium are determined to be LiFeCl 4 ·TBP and LiFeCl 4 2MIBK, respectively, according to the rule of neutralization.
Wei Qin - 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, Zhiyong Zhou, Shengke Liang, Wei Qin, 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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Recovery of Lithium Using Tributyl Phosphate in Methyl Isobutyl Ketone and FeCl3
Industrial & Engineering Chemistry Research, 2012Co-Authors: Zhiyong Zhou, Shengke Liang, Wei Qin, Tan Yuanzhong, Weiyang FeiAbstract:Lithium recovery from salt-lake brines was explored using the extraction equilibria of lithium with Tributyl Phosphate (TBP) in methyl isobutyl ketone (MIBK), with FeCl3 coextractant, for various v...
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extraction equilibria of lithium with Tributyl Phosphate in kerosene and fecl3
Journal of Chemical & Engineering Data, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Yang Liu, Weiyang FeiAbstract:To explore the feasibility of extracting lithium metal from brine sources, three salts, MgCl2, CaCl2, and NH4Cl, were selected as chloride sources, and the extraction equilibrium of lithium was studied with Tributyl Phosphate (TBP) in kerosene and FeCl3 as a coextracting agent at different values of Fe/Li. The extraction mechanism for lithium with TBP in kerosene and FeCl3 as a coextracting agent was investigated too. The results showed that the extraction of the lithium ion is a cation-exchange reaction, and the extraction of iron ion is the precondition of the extraction of lithium ion. All of the extractability of the iron ion increased with the chloride concentration with MgCl2, CaCl2, and NH4Cl as chloride sources, and the extraction capacity of lithium ion followed the sequence: MgCl2 > CaCl2 > NH4Cl, with recoveries from MgCl2 as chloride sources being much higher than that for CaCl2 and NH4Cl as chloride sources at all values of Fe/Li. There exists competitiveness between Li+ and NH4+, Ca2+, and M...
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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl3
Chinese Journal of Chemical Engineering, 2012Co-Authors: Zhiyong Zhou, Wei Qin, Weiyang FeiAbstract:Abstract To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources, the complexes formed from Tributyl Phosphate (TBP) and methyl isobutyl ketone (MIBK) with lithium were investigated using FeCl 3 as coextracting agent. Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(III) complex with lithium was obtained by regressing the experimental data. It is found that the stoichiometry of tetrachloroferrate(III) to lithium in the complex is 1 : U1 with either TBP or MIBK as extractant in kerosene. The stoichiometry of the complex of TBP with Li was 1 : U1 and that of MIBK with Li was 2 : U1. The formed complexes of TBP and MIBK with lithium are determined to be LiFeCl 4 ·TBP and LiFeCl 4 2MIBK, respectively, according to the rule of neutralization.
Shengke Liang - 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, Zhiyong Zhou, Shengke Liang, Wei Qin, 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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extraction equilibria of lithium with Tributyl Phosphate diisobutyl ketone acetophenone methyl isobutyl ketone and 2 heptanone in kerosene and fecl3
Industrial & Engineering Chemistry Research, 2013Co-Authors: Zhiyong Zhou, Shengke Liang, Weiyang FeiAbstract:The extraction equilibrium behavior of Li by Tributyl Phosphate (TBP), diisobutyl ketone, acetophenone, methyl isobutyl ketone, and 2-heptanone in kerosene were investigated. The partition coefficient of Li with TBP in kerosene decreased significantly when the volume concentration of TBP was greater than 60%. The values derived for the partition coefficients of four selected ketones in kerosene were smaller than that of TBP in kerosene. The stoichiometric coefficients between TBP and Li, the stoichiometric coefficients between the four selected ketones and Li, and the apparent equilibrium constant for the extraction reaction equation for TBP and the four ketones in kerosene were obtained. The tendency in extraction with the TBP and four selected ketones in kerosene can be predicted from these parameters. The polar solvents used as diluents for TBP can yield higher Li partition coefficients, strong dilution effects for TBP, and strong polarity and low density of the extracting solvents formed with both pol...
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Recovery of Lithium Using Tributyl Phosphate in Methyl Isobutyl Ketone and FeCl3
Industrial & Engineering Chemistry Research, 2012Co-Authors: Zhiyong Zhou, Shengke Liang, Wei Qin, Tan Yuanzhong, Weiyang FeiAbstract:Lithium recovery from salt-lake brines was explored using the extraction equilibria of lithium with Tributyl Phosphate (TBP) in methyl isobutyl ketone (MIBK), with FeCl3 coextractant, for various v...
S Venkatesan - One of the best experts on this subject based on the ideXlab platform.
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extraction of phenol and chlorophenols using ionic liquid bmim bf4 dissolved in Tributyl Phosphate
Clean-soil Air Water, 2013Co-Authors: Brinda A Lakshmi, A Balasubramanian, S VenkatesanAbstract:In the present work, experiments have been carried out with a focus to reduce the volume requirement of solvent by mixing with imidazolium based ionic liquids (ILs) for the solvent extraction of phenol, p-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, and pentachlorophenol from aqueous solutions. The effect of aqueous phase pH (2–12), agitation speed (100–450 rpm), solute concentration in feed (2–50 mg/L), temperature (303–333 K), treat ratio (1–11), and 1-butyl-3-methyl imidazolium tetrafluoroborate [Bmim]+[BF4]− volume in Tributyl Phosphate (TBP; 0–0.7% v/v) on extraction of phenols has been studied and optimized. Parameters like strip phase pH (3–13) and stripping agent concentration (0.001–0.009 N) have also been studied for stripping of phenols from solvent phase. It has been found that 0.5% v/v of ionic liquid [Bmim]+[BF4]− in solvent TBP extracts more than 97.5% of phenol and chlorophenols from aqueous solutions with a treat ratio (aqueous to solvent phase ratio) of 5. Transport mechanism for extraction and stripping of phenol and chlorophenols using ionic liquid [Bmim]+[BF4]− has been discussed. The results show that by appropriate selection of extraction and stripping conditions, it is possible to remove nearly all phenols with a treat ratio of 5.
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removal of phenolic compounds from aqueous solutions by emulsion liquid membrane containing ionic liquid bmim pf6 in Tributyl Phosphate
Desalination, 2012Co-Authors: A Balasubramanian, S VenkatesanAbstract:Abstract An experimental study on removal of phenolic compounds from aqueous solutions using Ionic Liquid Mixed Carrier (ILMC) containing 1-Butyl 3 Methylimidazolium HexafluoroPhosphate [BMIM]+[PF6]− dissolved in Tributyl Phosphate (TBP) in an Emulsion Liquid Membrane (ELM) was carried out. The effects of various operating parameters such as TBP Concentration, stripping reagent concentration, surfactant concentration, emulsification time, phase volume ratio, treat ratio, stirring speed, external phase pH and [BMIM]+[PF6]− concentration in TBP on removal of phenol has been experimentally investigated. It was found that addition of 0.02% (v/v) of [BMIM]+[PF6]− in membrane phase has enhanced the emulsion stability by 5 times and this was carried out using Rose Bengal dye to visualise the emulsion separation. An FTIR spectrum for TBP, ILMC and membrane phase before and after loading of phenol was generated to indicate their interactions and bonding. By selecting appropriate operating conditions, it was found to remove 99.5% of phenol and more than 90% of chlorophenols from aqueous solutions at the treat ratio of 3.
