Biosorption of Pb(II) and Zn(II) by Extracellular Polymeric Substance (Eps) of Rhizobium Radiobacter : Equilibrium, Kinetics and Reuse Studies

• Autorzy: Wang L. , Yang J. , Chen Z. , Liu X. , Ma F.
• Języki publikacji: EN

Abstrakty

EN

The extracellular polymeric substance (EPS) produced from Rhizobium radiobacter F2, designated as EPS_F2 , was investigated as a biosorbent for the removal of Pb(II) and Zn(II) from aqueous solution. The optimum biosorption pH values were 5.0 for Pb(II) and 6.0 for Zn(II). Kinetics study revealed that the biosorption followed pseudo-first-order model well, and the equilibrium data fit the Langmuir model better. The adsorbed metal ions could be effectively desorbed by HCl. Desrobed EPS_F2 regained 80% of the initial biosorption capacity after five cycles of biosorption-desorption-elution. These results demonstrated that EPSF2 could be a promising alternative for Pb(II) and Zn(II) removal from aqueous solution.

Słowa kluczowe

EN

biosorption; extracellular polymeric substance; EPS; Rhizobium radiobacter; heavy metal; kinetics

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2013
• Tom: Vol. 39, no. 2
• Strony: 129--140
• Opis fizyczny: Bibliogr. 28 poz., tab., wykr.

Twórcy

autor

Wang L.

• State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Yang J.

• State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Chen Z.

• State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Liu X.

• Institute of Municipal Engineering, Zhejiang University, Hangzhou 310058, China

autor

Ma F.

• State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

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