Biosorption of heavy metals in upflow sludge columns

被引：34
作者：
Morais Barros, Aldre Jorge
Prasad, Shiva [1 ]
Leite, Valderi Duarte
Souza, Antonio Gouveia
机构：
[1] Univ Fed Campina Grande, Dept Chem Engn, BR-58109970 Campina Grande, PB, Brazil
[2] Univ Fed Paraiba, Dept Chem, BR-58059900 Joao Pessoa, Paraiba, Brazil
[3] Univ Estadual Paraiba, Dept Chem, BR-58109970 Campina Grande, PB, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2007年 / 98卷 / 07期
关键词：
heavy metals; biosorption; complexation; sanitary sludge; thermal analysis;
D O I：
10.1016/j.biortech.2006.05.044
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The present study was carried out for evaluating the retention behavior of sanitary sewage and sand in relation to chromium and nickel ions in upflow reactors. It was found that the sludge presented a greater assimilation of the metals studied when compared to the inert material, probably due to the presence of anionic groups, which favors adsorption and complexation processes. Thermal analyses of the samples showed a shift in the decomposition peaks of the "in natura" sludge, when compared with those of the samples spiked with the metals, confirming the possibility of interactions between the heavy metals and the anionic groups present in the sludge. (c) 2006 Elsevier Ltd.. All rights reserved.
引用
收藏
页码：1418 / 1425
页数：8
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