Removal of cadmium from aqueous system by shelled Moringa oleifera Lam. seed powder

被引：92

作者：

Sharma, P ^{[1
]}

Kumari, P ^{[1
]}

Srivastava, MM ^{[1
]}

Srivastava, S ^{[1
]}

机构：

[1] Dayalbagh Educ Inst, Fac Sci, Dept Chem, Agra 282005, Uttar Pradesh, India

来源：

BIORESOURCE TECHNOLOGY | 2006年 / 97卷 / 02期

关键词：

biosorption; Moringa oleifera; Cd; ecofriendly techniques;

D O I：

10.1016/j.biortech.2005.02.034

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The present study explores the unexploited sorption properties of the plant Moringa oleifera Lam. for decontamination of Cd at laboratory scale. Sorption studies using standard practices were carried out in batch experiments as functions of biomass dosage, contact time, metal concentrations, particle size and pH. Percentage sorption in each case was computed on the basis of Cd estimation using a planar NaI (TI) detector coupled to a 4 K MCA (Canberra Accuspec Card with PC-AT 386). The adsorption data accurately in a Freundlich isotherm. Sorption studies resulted in the standardization of optimum conditions for removal of Cd (85.10%) as follows: biomass dosage (4.0 g), metal concentration (25 mu g/ml), contact time (40 min) and volume of the test solution (200 ml) at pH 6.5. Fourier transform infrared (FTIR) spectrometry highlighted amino acid-Cd interactions responsible for sorption phenomenon. The findings open up new avenues in the removal of toxic metals by shelled Moringa oleifera seeds (SMOS) from water bodies as low cost, domestic and environmentally friendly safe technology. (c) 2005 Published by Elsevier Ltd.

引用

页码：299 / 305

页数：7

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