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2008•Bulletin of Science and TechnologyRequires access

Effect of Extracellular Polymeric Substances on Dewatering of Activated Sludge and Study on Extraction Methods

Yingxu Chen

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Abstract

Extracellular polymeric substances(EPS)are secreted by microorganisms during growth.They are the predominant constituents of activated sludge and play a crucial role in the treatment of sludge,as well as the reduction in sludge volume and mass.In this paper results related to constituents and characteristics of EPS and the effect on dewatering of sludge are compiled.At last the extraction methods of EPS are summarized,together with a brief discussion of the biodegradation of EPS in order to provide valuable reference for correlative research work.

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What this paper is about

Extracellular polymeric substances(EPS)are secreted by microorganisms during growth.They are the predominant constituents of activated sludge and play a crucial role in the treatment of sludge,as well as the reduction in sludge volume and mass.In this paper results related to constituents and characteristics of EPS and the effect on dewatering of sludge are compiled.At last the extraction methods of EPS are summarized,together with a brief discussion of the biodegradation of EPS in order to provide valuable reference for correlative research work.

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Available abstract

Extracellular polymeric substances(EPS)are secreted by microorganisms during growth.They are the predominant constituents of activated sludge and play a crucial role in the treatment of sludge,as well as the reduction in sludge volume and mass.In this paper results related to constituents and characteristics of EPS and the effect on dewatering of sludge are compiled.At last the extraction methods of EPS are summarized,together with a brief discussion of the biodegradation of EPS in order to provide valuable reference for correlative research work.

Key concepts: Extracellular polymeric substance, Activated sludge, Dewatering, Biodegradation, Extraction (chemistry), Pulp and paper industry, Chemistry, Microorganism

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