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	Structure modification and extracellular polymeric substances conversion during sewage sludge biodrying process
	Cai L.; Krafft, T.; Chen, T. B.; Gao, D.; Wang, L.
	2016
关键词	Biodrying Extracellular polymeric substances Free water Morphological change Sewage sludge time-domain reflectometry soil-water content activated-sludge electrical-conductivity fluorescence excitation regional-integration moisture-content dewaterability waste flocculation
英文摘要	Biodrying, an economical and energy-saving biomass waste treatment, removes water from waste using the biological heat generated by organic matter degradation. Technical limitations associated with dewatering complicate the biodrying of sewage sludge. This study investigated the sludge alteration associated with its water removal, focusing on sludge form, extracellular polymeric substances, and free water release. An auto-feedback control technology was used for the biodrying; a scanning electron microscope was used to record the morphological change; three-dimensional excitation-emission matrix fluorescence spectroscopy was used to analyze extracellular polymeric substances ( EPS) variation, and time domain reflectometry was used to assess the free water release. Over the 20-day biodrying, there was a 62% water removal rate during the first thermophilic phase. Biodrying created a hollow and stratified sludge structure. Aromatic proteins and soluble microbial byproducts in the EPS were significantly degraded. The thermophilic phase was the phase resulting in the greatest free water release. (C) 2016 Elsevier Ltd. All rights reserved.
出处	Bioresource Technology
卷	216
页	414-421
语种	英语
ISSN号	0960-8524
DOI标识	10.1016/j.biortech.2016.05.102
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42870]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Cai L.,Krafft, T.,Chen, T. B.,et al. Structure modification and extracellular polymeric substances conversion during sewage sludge biodrying process. 2016.

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