Repeated removal of cadmium and zinc from an industrial effluent by waste biomass Sargassum sp.

被引：60

作者：

Esteves, AJP ^{[1
]}

Valdman, E ^{[1
]}

Leite, SGF ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Ctr Technol, Escola Quim, BR-21941900 Rio De Janeiro, Brazil

来源：

BIOTECHNOLOGY LETTERS | 2000年 / 22卷 / 06期

关键词：

biosorption; cadmium; desorption; Sargassum; zinc;

D O I：

10.1023/A:1005608701510

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Waste biomass Sargassum sp. biosorbed 100% of Cd2+ and 99.4% of Zn2+ from a 3 and 98 mg l(-1) solution (pH 4.5), respectively, at the end of four serial experiments. Of the five desorbents studied in consecutive adsorption/desorption cycles, CaCl2 0.05 M eluted nearly 40% of both metals and decreased the biosorption in only 8% and 17% of Cd2+ and Zn2+, respectively. Although NaOH desorbent improved the heavy metal uptake from the second cycle onwards, it did not elute metals from the pre-loaded biomass.

引用

页码：499 / 502

页数：4

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