NDLI: Adsorption properties of chromium (VI) on extracellular polymeric substances (EPS)

Content Provider	IEEE Xplore Digital Library
Author	Jinhua Tang Guoren Xu Guibai Li Spinosa, L.
Copyright Year	2011
Description	Author affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China (Jinhua Tang; Guoren Xu; Guibai Li) \|\| Department of Environmental Engineering and Sustainable Development, Technical University of Bari, Taranto, Italy (Spinosa, L.)
Abstract	The extraction of extracellular polymeric substances (EPS) from activated sludge and the absorption properties of chromium (VI) $(Cr^{6+})$ on EPS were examined in this experiment. The effects of adsorption time, pH, mass of EPS, and initial $Cr^{6+}$ concentration on $Cr^{6+}$ removal efficiency were investigated. The results indicated that high speed centrifugation was efficient in the extraction of EPS and caused less damage to cells, meanwhile EPS extracted by this method was efficient in the adsorption of $Cr^{6+}.$ The adsorption reached equilibrium when the adsorption time was 240 min. The adsorption rate and the unit adsorption capacity were 50.83% and 19.06 mg $g^{−1}$ EPS respectively. The optimal pH and mass of EPS were 6 and 400 mg $L^{−1}$ on the condition that the initial $Cr^{6+}$ concentration was 100 mg $L^{−1}.$ The adsorption rate declined with the rising of initial $Cr^{6+}$ concentration, but the unit adsorption capacity increased. The results demonstrated that the EPS extracted from activated sludge would be applicable to removing $Cr^{6+}.$
Starting Page	983
Ending Page	986
File Size	224245
Page Count	4
File Format	PDF
ISBN	9781457702891
e-ISBN	9781457702907
DOI	10.1109/ICETCE.2011.5776119
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Proteins Microorganisms Extracellular polymeric substances (EPS) Adsorption Metals Ions Extraction Chromium (VI) Polymers Plastics Extracellular
Content Type	Text
Resource Type	Article

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