Removal of anionic pollutants from groundwaters using Alamine 336:: chemical equilibrium modelling

被引：12
作者：
Bringas, Eugenio [1 ]
San Roman, M. Fresnedo [1 ]
Ortiz, Inmaculada [1 ]
机构：
[1] Univ Cantabria, Dept Ingn Quim & Quim Inorgan, ETSII y T, E-39005 Santander, Spain
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2006年 / 81卷 / 11期
关键词：
anionic pollutants; extraction equilibrium; tertiary amines; emulsion pertraction;
D O I：
10.1002/jctb.1610
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
This work reports the study of the chemical equilibrium of the extraction of chromium(VI) anions from groundwaters where other anionic species are present, mainly sulfate and chloride anions, using Alamine 336 as extractant. The analysis was performed working with two different systems: (i) a binary system (sulfate and chloride anions) and, (ii) a tertiary system (chromium, sulfate and chloride anions) with a composition of 9.6-15.4 mol Cr6+ m(-3), 5.2-16.7 mol SO42- m(-3) and 4.2 -13.5 mol Cl- m(-3) respectively. A careful experimental design was performed and the data were correlated to the mathematical models obtaining the equilibrium parameters of the extraction reactions in both systems. (c) 2006 Society of Chemical Industry.
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页码：1829 / 1835
页数：7
相关论文
共 36 条
[1]   Separation of Cr(VI) with Aliquat 336: Chemical equilibrium modeling [J].
Alonso, AI ;
Galan, B ;
Irabien, A ;
Ortiz, I .
SEPARATION SCIENCE AND TECHNOLOGY, 1997, 32 (09) :1543-1555
[2]  
[Anonymous], 1990, IARC MON EV CARC RIS
[3]   Separation and recovery of anionic pollutants by the emulsion pertraction technology. Remediation of polluted groundwaters with Cr(VI) [J].
Bringas, Eugenio ;
San Roman, M. Fresnedo ;
Ortiz, Inmaculada .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (12) :4295-4303
[4]  
Chaudry MA, 1997, WASTE MANAGE, V17, P211
[5]   Modeling of ion-pairing extraction with quaternary amines [J].
Coelhoso, IM ;
Crespo, JPSG ;
Carrondo, MJT .
SEPARATION SCIENCE AND TECHNOLOGY, 1996, 31 (04) :491-511
[6]   AMINES AS EXTRACTANTS [J].
COLEMAN, CF .
NUCLEAR SCIENCE AND ENGINEERING, 1963, 17 (02) :274-&
[7]   EXTRACTION OF CHROMIUM(6) FROM SULPHURIC ACID SOLUTIONS BY MEANS OF TRI-N-OCTYLAMINE [J].
DEPTULA, C .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1968, 30 (05) :1309-&
[8]   EXTRACTION OF ANIONS WITH ALIQUAT-336 - CHEMICAL-EQUILIBRIUM MODELING [J].
GALAN, B ;
URTIAGA, AM ;
ALONSO, AI ;
IRABIEN, JA ;
ORTIZ, MI .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1994, 33 (07) :1765-1770
[9]   Study of Cr(VI)/tertiary amine reaction kinetics using a modified rotating diffusion cell [J].
Harrington, PJ ;
Stevens, GW .
SOLVENT EXTRACTION AND ION EXCHANGE, 2000, 18 (05) :907-932
[10]  
*HENK CORP, 1990, CHROM TECHN B, V1
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