Characterization and evaluation of seaweed-based sorbents for treating toxic metal-bearing solutions

被引：11

作者：

Malik, DJ

Streat, M ^{[1
]}

Greig, J

机构：

[1] Univ Loughborough, Dept Chem Engn, Loughborough LE11 3TU, Leics, England

[2] Monsanto PLC, Ladyburn Works, Girvan, Ayr, Scotland

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 1999年 / 77卷 / B4期

关键词：

seaweed; algal biomass; biosorption; isotherms; esterification; swelling;

D O I：

10.1205/095758299530116

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Marine algal varieties Ascophyllum nodosum, Lessonia flavicans, Laminaria hyperborea and Durvillea potatorum as well as processed seaweed residues arising from the algin extraction industry have been evaluated for toxic metal sorption. Biosorption isotherms have been obtained for copper, cadmium and nickel at controlled solution pH4. Potentiometric titrations and esterification of algal biomass indicate that carboxylate groups are: primarily responsible for metal sorption. Proton/metal interactions play an important role in the biosorption process. Swelling of biosorbents is discussed in the context of potential large-scale fixed-bed column applications.

引用

页码：227 / 233

页数：7

共 27 条

[1] SITES OF METAL-DEPOSITION IN THE CELL-WALL OF BACILLUS-SUBTILIS [J].