Mechanistics of nickel sorption by activated sludge

被引：77

作者：

Arican, B ^{[1
]}

Gokcay, CF ^{[1
]}

Yetis, U ^{[1
]}

机构：

[1] Middle E Tech Univ, Dept Environm Engn, TR-06531 Ankara, Turkey

来源：

PROCESS BIOCHEMISTRY | 2002年 / 37卷 / 11期

关键词：

activated sludge; biosorption; dilution rate; heavy metals; linear isotherm; nickel;

D O I：

10.1016/S0032-9592(02)00015-8

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Biomass from activated sludge reactors operating at different dilution rates (0.09, 0,16, and 0.24/h) was used to examine the effect of sludge age on Ni2+ removal characteristics, running batch adsorption tests. The kinetic studies have revealed that sludge grown at all dilution rates, exhibits both active and passive uptake of Ni2+. Although percentages of active and passive uptake changed with the age of activated sludge biomass, passive uptake was the dominant mechanism in Ni2+ sorption. The data obtained were interpreted in the form of adsorption isotherms. At all dilution rates, linear adsorption isotherms were obtained., indicating the presence of equilibrium between biomass and the free nickel species. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1307 / 1315

页数：9

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