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2011 | 20 | 5 |
Tytuł artykułu

Biosorption of antimony (Sb) by the cyanobacterium synechocystis sp.

Autorzy
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Antimony (Sb) pollution has been of growing environmental concern. Little information is available on biosorption of Sb. In the present study, biosorption behavior and mechanisms of Sb(III) to the cyanobacterium Synechocystis sp. cells were investigated by batch experiments and FTIR analysis. Our study shows that Synechocystis sp. cells are a good adsorbent for Sb(III) with a sorption capacity of 4.68 mg・g⁻¹ dry weight adsorbent. The isothermal sorption data can be described by the Langmuir Isotherm and the Freundlich Isotherm. Several mechanisms were involved with biosorption of Sb to Synechocystis sp. cells and sorption to binding sites might be dominant. The sorption kinetics followed the pseudo-second order model. The adsorbed Sb is mainly located in extracellular polysaccharides (EPS) and within the cell, and a small proportion was adsorbed onto the cell wall. The proteins and polysaccharides in EPS and the polysaccharides on the cell are the main functional groups that are responsible for adsorption of Sb to Synechocystis sp. cells.
Słowa kluczowe
EN
Wydawca
-
Rocznik
Tom
20
Numer
5
Opis fizyczny
p.1353-1358,fig.,ref.
Twórcy
autor
  • Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan, China
  • State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
autor
  • State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
  • Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
autor
  • State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
autor
  • State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Bibliografia
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  • 4. United Nations Environmental Program. Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal with amended Annex I and two additional Annexes VIII and IX, adopted at the fourth meeting of the Conference of the Parties in 1998. SBC No. 99/001. UNEP, Geneva. 1999.
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  • 16. DE GREGORI I., PINOCHET H., FUENTES E., POTINGAUTIER M. Determination of antimony in soils and vegetables by hydride generation atomic fluorescence spectrometry and electrothermal atomic absorption spectrometry. Optimization and comparison of both analytical techniques. J. Anal. At. Spectrom. 16, 172, 2001.
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  • 23. GUIBAUD G., COMTE S., BORDAS F., DUPUY S., BAUDU M. Comparison of the complexation potential of extracellular polymeric substances (EPS), extracted from activated sludges and produced by pure bacteria strains, for cadmium, lead and nickel, Chemosphere 59, 629, 2005.
  • 24. ZHOU W.Z., WANG J., SHEN B.L., HOU W.G., ZHANG Y.Z. Biosorption of copper(II) and cadmium(II) by a novel exopolysaccharide secreted from deep-sea mesophilic bacterium. Colloids and Surfaces B: Biointerfaces. 72, 295, 2009.
Typ dokumentu
Bibliografia
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Identyfikator YADDA
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