Biosorption of hexavalent chromium using tamarind (Tamarindus indica) fruit shell -: a comparative study

被引：55
|
作者：
Popuri, Srinivasa Rao [1 ]
Jammala, Ajithapriya [2 ]
Reddy, Kachireddy Venkata Naga Suresh [3 ]
Abburi, Krishnaiah [2 ]
机构：
[1] Natl Chung Hsing Univ, Environm Restorat & Disaster Reduct Res Ctr, Taichung 402, Taiwan
[2] Sri Venkateswara Univ, Dept Chem, Biopolymers & Thermophys Labs, Tirupati 517502, Andhra Pradesh, India
[3] Apotex Res, Anat Dev Dept, Bangalore 560099, Karnataka, India
来源：
ELECTRONIC JOURNAL OF BIOTECHNOLOGY | 2007年 / 10卷 / 03期
关键词：
biosorption; chromium (VI); pre-treatment; Tamarindus indica fruit shell;
D O I：
10.2225/vol10-issue3-fulltext-11
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：
The adsorption of chromium (VI) ions from aqueous solutions has been investigated on crude tamarind fruit shell, HCl treated and Oxalic acid treated shells at room temperatures. The biosorbents are characterized by FTIR, EDXRF and porosimetry. The biosorption experiments are conducted through batch system. The influence of different experimental parameters such as pH, effect of initial metal ion concentration and effect of dosage of adsorbent on biosorption are evaluated. The adsorption followed first order kinetics. The data are fitted well to Langmuir and Freundlich isotherm models. A comparison is drawn on the extent of biosorption between untreated and treated forms of the tamarind shells. Due to their outstanding adsorption capacities, tamarind shells are excellent sorbents for the removal of chromium ions.
引用
收藏
页码：358 / 367
页数：10
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