A comparative study of alginate beads and an ion-exchange resin for the removal of heavy metals from a metal plating effluent

被引：0

作者：

Silva, Rui M. P. ^{[1
]}

Manso, João P. H. ^{[1
]}

Rodrigues, Joaquim R. C. ^{[1
]}

Lagoa, Ricardo J. L. ^{[1
,2
]}

机构：

[1] School of Technology and Management, Polytechnic Institute of Leiria, Leiria, Portugal

[2] School of Technology and Management, Polytechnic Institute of Leiria, Morro do Lena, Alto do Vieiro, 2401-951 Leiria, Portugal

来源：

Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering | 2008年 / 43卷 / 11期

关键词：

The capacity of dry protonated calcium alginate beads to sorb metals from an industrial effluent was studied and compared with a commercial ion-exchange resin (Lewatit TP 207). Both sorbents decreased zinc; nickel; iron and calcium concentrations in the effluent; and released sodium during treatment. Alginate beads removed lower amounts of heavy metals than the resin; but exhibited faster uptake kinetics. Zinc desorption from the sorbents was achieved in 30 minutes using 0.1 M HCl or 0.1 M H2SO4. Desorption ratios with these acids varied between 90 and 100% for alginate; and 98 to 100% for the ion-exchange resin. Reusability tests with HCl showed that alginate beads can stand acid desorption and recover binding capacity. Overall; the comparison of dry protonated alginate beads with the resin supports the potential of the biosorbent for the treatment of industrial effluents. Copyright © Taylor & Francis Group; LLC;

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摘要：

Journal article (JA)

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页码：1311 / 1317