Biosorption of Cu(II) by powdered anaerobic granular sludge from aqueous medium

Copper(II) biosorption processes by two pre-treated powdered anaerobic granular sludges (PAGS) (original sludges were methanogenic anaerobic granules and denitrifying sulfide removal (DSR) anaerobic granules) were investigated through batch tests. Factors affecting the biosorption process, such as p...

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Bibliographic Details
Published in:Water science and technology 2013-01, Vol.68 (1), p.91-98
Main Authors: XU ZHOU, CHUAN CHEN, AIJIE WANG, GUANGMING JIANG, LIHONG LIU, XIJUN XU, YE YUAN, LEE, Duu-Jung, NANQI REN
Format: Article
Language:English
Subjects:
Adsorption
Anaerobic processes
Anaerobic treatment
Analysis methods
Applied sciences
Bacteria, Anaerobic - metabolism
Biodegradation, Environmental
Biomass
Copper
Copper - metabolism
Copper compounds
Environmental impact
Exact sciences and technology
Experiments
Fourier transforms
Granular materials
Infrared analysis
Infrared spectroscopy
Kinetics
Metals
Other industrial wastes. Sewage sludge
Pollution
Sewage - microbiology
Sludge
Spectroscopy, Fourier Transform Infrared
Spectrum analysis
Sulfur
Surface area
Wastes
Water treatment and pollution
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Summary:Copper(II) biosorption processes by two pre-treated powdered anaerobic granular sludges (PAGS) (original sludges were methanogenic anaerobic granules and denitrifying sulfide removal (DSR) anaerobic granules) were investigated through batch tests. Factors affecting the biosorption process, such as pH, temperature and initial copper concentrations, were examined. Also, the physico-chemical characteristics of the anaerobic sludge were analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy image, surface area and elemental analysis. A second-order kinetic model was applied to describe the biosorption process, and the model could fit the biosorption process. The Freundlich model was used for describing the adsorption equilibrium data and could fit the equilibrium data well. It was found that the methanogenic PAGS was more effective in Copper(II) biosorption process than the DSR PAGS, whose maximum biosorption capacity was 39.6% lower. The mechanisms of the biosorption capacities for different PAGS were discussed, and the conclusion suggested that the environment and biochemical reactions during the growth of biomass may have affected the structure of the PAGS. The methanogenic PAGS had larger specific surface area and more biosorption capacity than the DSR PAGS.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2013.228