Adsorption of Cr(VI) using Fe-crosslinked chitosan complex (Ch-Fe)

被引：156
作者：
Zimmermann, Ana Claudia [1 ]
Mecabo, Ariany [1 ]
Fagundes, Tathyane [1 ]
Rodrigues, Clovis Antonio [1 ]
机构：
[1] Univ Vale Itajai UNIVALI, Nucleo Invest Quim Farmaceut NIQ FAR, Curso Farm CCS, BR-88302202 Santa Catarina, Brazil
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 179卷 / 1-3期
关键词：
Chitosan-iron; Chromium(VI); Adsorption isotherm; HEXAVALENT CHROMIUM; AQUEOUS-SOLUTION; ION-EXCHANGE; REMOVAL; KINETICS; IRON; EQUILIBRIUM; SPECIATION; ISOTHERMS; CR(III);
D O I：
10.1016/j.jhazmat.2010.02.078
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In the present investigation. Fe-chitosan crosslinked is used as adsorbent for the removal of chromium from aqueous solutions. The influence of pH, temperature and other ions was evaluated. pH 2.0 was found to be the optimum pH for adsorption of Cr(VI)onto Ch-Fe. Coordination of unsaturated sites for the iron(III) complex of polymer were considered to be the adsorption sites for Cr(VI) species, the predominant species being HCrO4-. The Langmuir and Langmuir-Freundlich adsorption isotherm models were applied to describe the isotherm parameter for Cr(VI) adsorption. The results indicate that the Langmuir-Freundlich adsorption model and maximum adsorption capacity was calculated as 295 mg/g at 25 degrees C, with pH 4.7. Cr(VI) uptake on the adsorbent decreased from 295 mg/g at 25 degrees C to 209 mg/g at 65 degrees C. Rate constants as a function of temperature were evaluated with the help of a proposed second order kinetic model. The other coexisting ions, nitrate, chlorides and sulphate influenced Cr(VI) adsorption. (c) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：192 / 196
页数：5
相关论文
共 30 条
  • [1] Cr(VI) removal from aqueous solution by iron (III) hydroxide-loaded sugar beet pulp
    Altundogan, HS
    [J]. PROCESS BIOCHEMISTRY, 2005, 40 (3-4) : 1443 - 1452
  • [2] Adsorption of chromium on chitosan: Optimization, kinetics and thermodynamics
    Aydin, Yasar Andelib
    Aksoy, Nuran Deveci
    [J]. CHEMICAL ENGINEERING JOURNAL, 2009, 151 (1-3) : 188 - 194
  • [3] Adsorption of Cr(VI) using activated neem leaves: kinetic studies
    Babu, B. V.
    Gupta, S.
    [J]. ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, 2008, 14 (01): : 85 - 92
  • [4] Adsorption of Cr(VI) using thermally activated weed Salvinia cucullata
    Baral, S. S.
    Das, S. N.
    Chaudhury, G. Roy
    Swamy, Y. V.
    Rath, P.
    [J]. CHEMICAL ENGINEERING JOURNAL, 2008, 139 (02) : 245 - 255
  • [5] Comparative studies on the adsorption of Cr(VI) ions on to various sorbents
    Baran, Ayse
    Bicak, Evran
    Baysal, Senay Hamarat
    Onal, Secil
    [J]. BIORESOURCE TECHNOLOGY, 2007, 98 (03) : 661 - 665
  • [6] Adsorption of Cr(VI) onto PEI immobilized acrylate-based magnetic beads: Isotherms, kinetics and thermodynamics study
    Bayramoglu, Guelay
    Arica, M. Yakup
    [J]. CHEMICAL ENGINEERING JOURNAL, 2008, 139 (01) : 20 - 28
  • [7] Cancer mortality in a Chinese population exposed to hexavalent chromium in drinking water
    Beaumont, James J.
    Sedman, Richard M.
    Reynolds, Stephen D.
    Sherman, Claire D.
    Li, Ling-Hong
    Howd, Robert A.
    Sandy, Martha S.
    Zeise, Lauren
    Alexeeff, George V.
    [J]. EPIDEMIOLOGY, 2008, 19 (01) : 12 - 23
  • [8] Adsorption of Pb(II) from aqueous solution by Azadirachta indica (Neem) leaf powder
    Bhattacharyya, KG
    Sharma, A
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2004, 113 (1-3) : 97 - 109
  • [9] Treatment of tanning effluent using nanofiltration followed by reverse osmosis
    Das, Chandan
    Patel, Piyush
    De, Sirshendu
    DasGupta, Sunando
    [J]. SEPARATION AND PURIFICATION TECHNOLOGY, 2006, 50 (03) : 291 - 299
  • [10] Adsorption of chromium(VI) from aqueous solution by activated carbon derived from olive bagasse and applicability of different adsorption models
    Demiral, Hakan
    Demiral, Ilknur
    Tumsek, Fatma
    Karabacakoglu, Belgin
    [J]. CHEMICAL ENGINEERING JOURNAL, 2008, 144 (02) : 188 - 196
123