Sorption of Cr(VI) onto natural iron and aluminum (oxy)hydroxides: Effects of pH, ionic strength and initial concentration

被引：224
作者：
Ajouyed, Omar [1 ,2 ]
Hurel, Charlotte [1 ]
Ammari, Mohammed [2 ]
Ben Allal, Laila [2 ]
Marmier, Nicolas [1 ]
机构：
[1] Univ Nice Sophia Antipolis, Fac Sci, Dept Chim, LRSAE, F-06108 Nice 02, France
[2] Univ Abdelmalek Essaadi, Fac Sci & Tech, Dept Chim, LGCVR, Tetouan, Morocco
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 174卷 / 1-3期
关键词：
Adsorption; Chromium; Sediment; Oxy-hydroxides; Adsorption isotherm; AQUEOUS-SOLUTIONS; ADSORPTION; REMOVAL; CHROMIUM(VI); WASTEWATERS; CHROMATE; REDOX; WATER; TRANSFORMATIONS; GOETHITE;
D O I：
10.1016/j.jhazmat.2009.09.096
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of this work is to study the performances of removal of hexavalent chromium from aqueous solution by three different oxy-hydroxides: hematite, goethite and alpha-alumina. Batch experiments were conducted to measure the effects on adsorption of Cr(VI) of different parameters such as pH of the medium, ionic strength, and initial concentration. Results showed that the adsorption of Cr(VI) depends strongly on the pH, but is independent of ionic strength for hematite and goethite. For a-alumina, adsorption is strongly dependent on pH values and ionic strength. Equilibrium studies showed that Cr(VI) had a high affinity in an acidic medium, but decreased as solution pH increased. Equilibrium isotherms were measured experimentally. Results were analyzed by the Langmuir and Freundlich equations using linearized correlation coefficient at room temperature. The characteristic parameters for each isotherm have been determined. Langmuir equation was found to fit the equilibrium data for Cr(VI) adsorption. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：616 / 622
页数：7
相关论文
共 28 条
[1]   Adsorption of Cr(VI) from synthetic solutions and electroplating wastewaters on amorphous aluminium oxide [J].
Alvarez-Ayuso, E. ;
Garcia-Sanchez, A. ;
Querol, X. .
JOURNAL OF HAZARDOUS MATERIALS, 2007, 142 (1-2) :191-198
[2]  
ATSDR, 2000, TOX PROF CHROM
[3]   Chromium(VI) removal by calcined bauxite [J].
Baral, Saroj S. ;
Das, Surendra N. ;
Rath, Pradip ;
Chaudhury, Gautam R. .
BIOCHEMICAL ENGINEERING JOURNAL, 2007, 34 (01) :69-75
[4]   X-RAY-ABSORPTION SPECTROSCOPY INVESTIGATION OF SURFACE REDOX TRANSFORMATIONS OF THALLIUM AND CHROMIUM ON COLLOIDAL MINERAL OXIDES [J].
BIDOGLIO, G ;
GIBSON, PN ;
OGORMAN, M ;
ROBERTS, KJ .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1993, 57 (10) :2389-2394
[5]   Accumulation and remobilization of aqueous chromium(VI) at iron oxide surfaces: Application of a thin-film continuous flow-through reactor [J].
Deng, YW ;
Stjernstrom, M ;
Banwart, S .
JOURNAL OF CONTAMINANT HYDROLOGY, 1996, 21 (1-4) :141-151
[6]   Removal of chromium(VI) from saline wastewaters by Dunaliella species [J].
Dönmez, G ;
Aksu, Z .
PROCESS BIOCHEMISTRY, 2002, 38 (05) :751-762
[7]   Distribution of hexavalent Cr species across the clay mineral surface-water interface [J].
Fritzen, MB ;
Souza, AJ ;
Silva, TAG ;
Souza, L ;
Nome, RA ;
Fiedler, HD ;
Nome, F .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 296 (02) :465-471
[8]   Arsenate and chromate retention mechanisms on goethite .2. Kinetic evaluation using a pressure-jump relaxation technique [J].
Grossl, PR ;
Eick, M ;
Sparks, DL ;
Goldberg, S ;
Ainsworth, CC .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (02) :321-326
[9]   Effects of anion species and concentration on the removal of Cr(VI) by a microalgal isolate, Chlorella miniata [J].
Han, Xu ;
Wong, Yuk Shan ;
Wong, Ming Hung ;
Tam, Nora Fung Yee .
JOURNAL OF HAZARDOUS MATERIALS, 2008, 158 (2-3) :615-620
[10]   Removal of chromium from aqueous solution by using oxidized multiwalled carbon nanotubes [J].
Hu, Jun ;
Chen, Changlun ;
Zhu, Xiaoxiang ;
Wang, Xiangke .
JOURNAL OF HAZARDOUS MATERIALS, 2009, 162 (2-3) :1542-1550
123