BIOSORPTION OF CHROMIUM(VI) IONS FROM AQUEOUS SYSTEM BY FREE AND IMMOBILIZED BIOMASS OF WILD SYNECHOCYSTIS SP.: A COMPARATIVE STUDY

被引：0

作者：

Ozturk, Sahlan ^{[1
]}

Aslim, Belma ^{[2
]}

Tunceli, Adalet ^{[3
]}

机构：

[1] Nevsehir Univ, Fac Sci & Arts, Dept Biol, TR-50300 Nevsehir, Turkey

[2] Gazi Univ, Mol Biol Res Ctr, Ankara, Turkey

[3] Gazi Univ, Fac Sci & Arts, Dept Chem, Ankara, Turkey

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2011年 / 20卷 / 9A期

关键词：

Biosorption; Chromium(VI) removal; Cyanobacteria; Synechocystis sp; REMOVAL; ADSORPTION; HEAT; CYANOBACTERIA; EQUILIBRIUM; COPPER(II); ALGINATE; KINETICS; SHELL; LIVE;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hexavalent chromium biosorption from aqueous solutions by dried biomass, immobilized dried and immobilized live Synechocystis sp. but also plain Ca-alginate beads was studied. Maximum biosorption capacities of dried biomass, immobilized dried, immobilized live cyanobacterial forms and plain Ca-alginate beads were found to be 78.20, 6.67, 5.38 and 3.58 mg/g, respectively (pH 2.0, 25 degrees C, 60 min). Langmuir and Freundlich isotherm models were suitable for describing the biosorption of chromium by dried biomass of Synechocystis sp. All the tested cyanobacterial forms were regenerated using 0.1 M HCl with up to 90% recovery; and biosorbents were reused in 5 biosorption-desorption cycles without any considerable loss in sorption capacity.

引用

页码：2412 / 2418

页数：7

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