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Extraction of hydrogen chloride by a coupled reaction-solvent extraction process

Yunzhao Li,Xingfu Song,Guilan Chen,Shuying Sun,Yanxia Xu,Jianguo Yu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 479-487 doi: 10.1007/s11705-015-1512-8

Abstract: A coupled reaction-solvent extraction process was used to remove HCl from a simulated distiller wasteThe extraction performances of various extractants and diluents were compared and the apparent basicityThe yield of HCl from the coupled extraction was 75% with this extraction system.The mechanisms for the removal of HCl in both the direct and coupled extractions were investigated.For the coupled extraction, the formation of an R NHCl ion-pair complex was involved in the HCl removal

Keywords： hydrogen chloride     distiller waste     coupled reaction and solvent extraction     N235     extraction mechanism    

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Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 281-287 doi: 10.1007/s11709-012-0167-5

Abstract: The boundary condition was based on the damping-solvent extraction method.The principle of the damping-solvent extraction method was described.Compared with the damping-solvent extraction method, this boundary condition is easier to be applied

Keywords： damping-solvent extraction method     structure-unlimited-foundation system     spring-damper system     artificial    

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Vanadium(IV) solvent extraction enhancement in high acidity using di-(2-ethylhexyl)phosphoric acid with

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 56-67 doi: 10.1007/s11705-022-2185-8

Abstract: conditions of pH 0.8, di-(2-ethylhexyl)phosphoric acid concentration of 20%, phase ratio of 1:2, and extractiontime of 8 min, the vanadium extraction could reach 80.00%.reveal that, despite the fact that the chloride ion in the leachate could significantly promote vanadium extractionethylhexyl)phosphoric acid also enter the water phase more easily, which reduces the pH required for the extractionreaction.

Keywords： vanadium     black shale     solvent extraction     high acidity extraction    

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A new procedure combining GC-MS with accelerated solvent extraction for the analysis of phthalic acid

Tingting MA, Ying TENG, Peter CHRISTIE, Yongming LUO, Yongshan CHEN, Mao YE, Yujuan HUANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 31-42 doi: 10.1007/s11783-012-0463-2

Abstract: optimized procedure based on gas chromatography-mass spectrometry (GC-MS) combined with accelerated solventextraction (ASE) is developed for the analysis of six phthalic acid esters (PAEs), which are priorityQuantification of PAEs in soil employs ultrasonic extraction (UE) (USEPA 3550) and ASE (USEPA 3545),

Keywords： phthalic acid esters     quality assurance and quality control     soil type     accelerated solvent extraction     certified    

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Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solventextraction-precipitation process

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 902-912 doi: 10.1007/s11705-019-1887-z

Abstract: High-manganese containing vanadium wastewater (HMVW) is commonly produced during the vanadium extractionan efficient and environmentally friendly method was developed to recover valuable metals by using a solventextraction-precipitation process.In the solvent extraction process, 98.15% of vanadium was recovered, and the V O product, with a purity

Keywords： high-manganese containing vanadium wastewater     solvent extraction     carbonate precipitation     vanadium titano-magnetite    

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Selective removal of iron(III) from highly salted chloride acidic solutions by solvent extraction using

Guoping Hu, Yue Wu, Desheng Chen, Yong Wang, Tao Qi, Lina Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 528-537 doi: 10.1007/s11705-020-1955-4

Abstract: Di(2-ethylhexyl)phosphate acid (D2EHPA) showed high extraction rate and selectivity of Fe over otherThe acidity of the aqueous solution is crucial to the extraction of Fe , and the stoichiometry ratioThe enthalpy for the extraction of Fe using D2EHPA was 19.50 kJ/mol.The extraction of Fe was ≥99% under the optimized conditions after a three-stage solvent extraction

Keywords： solvent extraction     iron     di(2-ethylhexyl)phosphate acid     separation    

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Technologies for extracting lipids from oleaginous microorganisms for biodiesel production

Cunwen WANG, Lu CHEN, Bajpai RAKESH, Yuanhang QIN, Renliang LV

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 266-274 doi: 10.1007/s11708-012-0193-y

Abstract: The process of biodiesel production from microorganisms involves many steps, of which the lipids extractionTherefore, searching for an effective and economical extraction system is critical.Various approaches of lipids extraction are discussed in this review, including traditional extractionprocedures such as solvent extraction, pressing and solvent integrated extraction, as well as some new

Keywords： oleaginous microorganisms     biodiesel     solvent extraction     ultrasound-assisted extraction     microwave-assistedextraction     supercritical fluid extraction (SFE)    

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Deep eutectic ionic liquids based on DABCO-derived quaternary ammonium salts: A promising reaction medium

Muhammad Faisal, Azeem Haider, Quret ul Aein, Aamer Saeed, Fayaz Ali Larik

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 586-598 doi: 10.1007/s11705-018-1788-6

Abstract: The formation of deep eutectic solvent was confirmed by freezing point depression, it composition was2,2′:6′,2″-terpyridine, 3,2′:6′,3″-terpyridineand 4,2′:6′,4″-terpyridinederivatives through Kröhnke reactionthat these three types of terpyridines can be obtained in reasonable yields (80% 97%) by the one-pot reactionof 2-, 3- or 4-acetylpyridine with a variety of aromatic aldehydes in the presence of DEIL as a reactionTherefore, these DEILs as a non-conventional reaction medium for the synthesis of terpyridines provides

Keywords： terpyridine     deep eutectic solvent     ionic liquid     Kröhnke reaction     DABCO    

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Environmental and economic assessment of vegetable oil production using membrane separation and vapor recompression

Weibin Kong, Qi Miao, Peiyong Qin, Jan Baeyens, Tianwei Tan

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 166-176 doi: 10.1007/s11705-017-1616-4

Abstract: Solvent extraction of crude oil from oilseeds is widely applied for its high production capacity andIn this process, solvent recovery and tail gas treatment are usually performed by adsorption, paraffinNearly 73% of energy can be saved in the process of vegetable oil extraction by the novel processing

Keywords： vegetable oil     solvent-extraction     membrane separation     vapor recompression     environmental and economic assessment    

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Research Advance of Ionic Liquids in Extraction of Metal Ions

Liu Limei,Su Yongqing,Li Cong,He Fei,He Yongfu, Zhong Yun

Strategic Study of CAE 2007, Volume 9, Issue 11,   Pages 187-190

Abstract: They have become a hot research field in separation of metal ions by solvent extraction.

Keywords： ionic liquids     extraction     metal ions     green solvent    

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Kinetics of halogen-exchange fluorination of 2,6-dichlorobenzaldehyde

LIANG Zhengyong, LI Bindong, FENG Chao

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 59-62 doi: 10.1007/s11705-008-0008-1

Abstract: Under the conditions of phase transfer catalysis and nitrobenzene as the solvent, the halogen-exchangeThe kinetics was investigated and the reaction rate constants were obtained under the optimum conditions

Keywords： reaction     solvent     transfer catalysis     activation     nitrobenzene    

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Application of high-speed counter-current chromatography coupled with high performance liquid chromatography

Shengguo DENG, Zeyuan DENG, Yawei FAN, Jing LI, Rong LIU, Dongmei XIONG,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 375-382 doi: 10.1007/s11705-009-0247-9

Abstract: and purified by semi-preparative high-speed counter-current chromatography (HSCCC) with a two-phase-solvent

Keywords： two-phase-solvent     flavonoid glycoside     high-speed counter-current     macroporous     counter-current chromatography    

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Entity and relation extraction with rule-guided dictionary as domain knowledge

Frontiers of Engineering Management   Pages 610-622 doi: 10.1007/s42524-022-0226-0

Abstract: Entity and relation extraction is an indispensable part of domain knowledge graph construction, whichThe existing entity and relation extraction methods that depend on pretrained models have shown promisingEntity extraction models treat characters as basic semantic units while ignoring known character dependencyRelation extraction is based on the hypothesis that the relations hidden in sentences are unified, therebyIn addition, the extraction accuracy of entity relation triplet reaches 83% and 76% on laser industry

Keywords： entity extraction     relation extraction     prior knowledge     domain rule    

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Regulation of radicals by hydrogen-donor solvent in direct coal liquefaction

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1689-1699 doi: 10.1007/s11705-022-2186-7

Abstract: The reaction between the formation and annihilation of coal radical fragments and the effect of hydrogen-donorThe synergistic mechanism of hydrogen supply and hydrogenolysis of hydrogen-donor solvent was proposed

Keywords： direct coal liquefaction     hydrogen-donor solvent     induced pyrolysis     radical mechanism     density functional    

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Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 184-193 doi: 10.1007/s11705-017-1678-3

Abstract: employed to produce the micronized curcumin with polyvinylpyrrolidone (PVP) by the supercritical anti-solvent

Keywords： micronization     curcumin     polyvinylpyrrolidone     supercritical anti-solvent     swirl mixer    

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Title Author Date Type Operation

Extraction of hydrogen chloride by a coupled reaction-solvent extraction process

Yunzhao Li,Xingfu Song,Guilan Chen,Shuying Sun,Yanxia Xu,Jianguo Yu

Journal Article

Study of an artificial boundary condition based on the damping-solvent extraction method

Qiang XU, Jianyun CHEN, Jing LI, Mingming WANG

Journal Article

Vanadium(IV) solvent extraction enhancement in high acidity using di-(2-ethylhexyl)phosphoric acid with

Journal Article

A new procedure combining GC-MS with accelerated solvent extraction for the analysis of phthalic acid

Tingting MA, Ying TENG, Peter CHRISTIE, Yongming LUO, Yongshan CHEN, Mao YE, Yujuan HUANG

Journal Article

Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solventextraction-precipitation process

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Journal Article

Selective removal of iron(III) from highly salted chloride acidic solutions by solvent extraction using

Guoping Hu, Yue Wu, Desheng Chen, Yong Wang, Tao Qi, Lina Wang

Journal Article

Technologies for extracting lipids from oleaginous microorganisms for biodiesel production

Cunwen WANG, Lu CHEN, Bajpai RAKESH, Yuanhang QIN, Renliang LV

Journal Article

Deep eutectic ionic liquids based on DABCO-derived quaternary ammonium salts: A promising reaction medium

Muhammad Faisal, Azeem Haider, Quret ul Aein, Aamer Saeed, Fayaz Ali Larik

Journal Article

Environmental and economic assessment of vegetable oil production using membrane separation and vapor recompression

Weibin Kong, Qi Miao, Peiyong Qin, Jan Baeyens, Tianwei Tan

Journal Article

Research Advance of Ionic Liquids in Extraction of Metal Ions

Liu Limei,Su Yongqing,Li Cong,He Fei,He Yongfu, Zhong Yun

Journal Article

Kinetics of halogen-exchange fluorination of 2,6-dichlorobenzaldehyde

LIANG Zhengyong, LI Bindong, FENG Chao

Journal Article

Application of high-speed counter-current chromatography coupled with high performance liquid chromatography

Shengguo DENG, Zeyuan DENG, Yawei FAN, Jing LI, Rong LIU, Dongmei XIONG,

Journal Article

Entity and relation extraction with rule-guided dictionary as domain knowledge

Journal Article

Regulation of radicals by hydrogen-donor solvent in direct coal liquefaction

Journal Article

Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Journal Article