Uphill permeation of Cr(VI) using Hostarex A327 as ionophore by membrane-solvent extraction processing

被引:47
作者
Alguacil, Francisco Jose [1 ]
Alonso, Manuel [1 ]
Lopez, Felix [1 ]
Lopez-Delgado, Aurora [1 ]
机构
[1] Ctr Nacl Invest Metalurg CSIC, Madrid 28040, Spain
关键词
Cr(VI) transport; emulsion pertraction technology; Hostarex A327; liquid membranes;
D O I
10.1016/j.chemosphere.2008.02.030
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The transport of chromium by the emulsion pertraction technology (EPERT) using Hostarex A327 (tertiary amine) as a carrier has been investigated. The permeation of the metal is studied as a function of various experimental variables: hydrodynamic conditions, concentration of Cr(VI) and HCI in the source phase, carrier concentration and diluent in the organic phase, strippant concentration in the stripping phase and support characteristics of the membrane. The mass transfer coefficient and the thickness of the aqueous source boundary layer were estimated from the experimental data. Furthermore, the selectivity of the Hostarex A327-bases EPERT towards different metal ions and the behaviour of the system against other carriers are presented. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:684 / 689
页数:6
相关论文
共 18 条
[1]   Transport of chromium(VI) through a Cyanex 923-xylene flat-sheet supported liquid membrane [J].
Alguacil, FJ ;
Coedo, AG ;
Dorado, MT .
HYDROMETALLURGY, 2000, 57 (01) :51-56
[2]   Description of transport mechanism during the elimination of copper(II) from wastewaters using supported liquid membranes and Acorga M5640 as carrier [J].
Alguacil, FJ ;
Alonso, M .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (07) :2389-2393
[3]   The phosphine oxides Cyanex 921 and Cyanex 923 as carriers for facilitated transport of chromium (VI)-chloride aqueous solutions [J].
Alguacil, FJ ;
López-Delgado, A ;
Alonso, M ;
Sastre, AM .
CHEMOSPHERE, 2004, 57 (08) :813-819
[4]   Copper separation from nitrate/nitric acid media using Acorga M5640 extractant Part II. Supported liquid membrane study [J].
Alguacil, FJ ;
Alonso, M ;
Sastre, AM .
CHEMICAL ENGINEERING JOURNAL, 2002, 85 (2-3) :265-272
[5]   Liquid membranes and the treatment of metal-bearing wastewaters [J].
Alguacil, FJ ;
Villegas, MA .
REVISTA DE METALURGIA, 2002, 38 (01) :45-55
[6]   Kinetic modelling of the facilitated transport of cadmium(II) using Cyanex 923 as ionophore [J].
Alonso, Manuel ;
Lopez-Delgado, Aurora ;
Sastre, Ana Maria ;
Alguacil, Francisco Jose .
CHEMICAL ENGINEERING JOURNAL, 2006, 118 (03) :213-219
[7]  
Beszedits S., 1988, Chromium in the Natural and Human Environments
[8]   Intensification of membrane processes. Remediation of groundwaters by emulsion pertraction as a case study [J].
Bringas, E. ;
Roman, M. F. San ;
Urtiaga, A. M. ;
Ortiz, I. .
DESALINATION, 2006, 200 (1-3) :459-461
[9]   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
[10]  
CASADEVALL M, 2002, HEAVY METALS ENV