期刊
BIORESOURCE TECHNOLOGY
卷 160, 期 -, 页码 79-88出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.12.107
关键词
Cabbage waste; Competitive adsorption; Biosorption; Multi-metals; Antagonism mechanism mu
资金
- Research Theme of Sustainable Water: Wastewater Treatment and Reuse Technologies
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology, Sydney (UTS)
- UTS International Postgraduate Research Scholarship
This study assessed the adsorption capacity of the agro-waste 'cabbage' as a biosorbent in single, binary, ternary and quaternary sorption systems with Cu(II), Pb(II), Zn(II) and Cd(II) ions. Dried and ground powder of cabbage waste (CW) was used for the sorption of metals ions. Carboxylic, hydroxyl, and amine groups in cabbage waste were found to be the key functional groups for metal sorption. The adsorption isotherms obtained could be well fitted to both the mono- and multi-metal models. In the competitive adsorption systems, cabbage waste adsorbed larger amount of Pb(II) than the other three metals. However, the presence of the competing ions suppressed the sorption of the target metal ions. Except the case of binary system of Cd(II)-Zn(II) and Cd(II)-Cu(II), there was a linear inverse dependency between the sorption capacities and number of different types of competitive metal ions. (C) 2013 Elsevier Ltd. All rights reserved.
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