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Relationship between physicochemical properties and dewaterability of hydrothermal sludge derived from different source
Zhuang Xiuzheng; Huang Yanqin; Liu Huacai; Yuan Hongyou; Yin Xiuli; Wu Chuangzhi
2018
Source PublicationJournal of Environmental Sciences
ISSN1001-0742
Volume69Pages:261
AbstractSewage sludge (SS) and deinking sludge (DS) were used to comparatively study the hydrothermal dewatering of sludge with different components. For a better overview, an insight into the relationship between physicochemical properties and dewaterability of hydrothermal sludge was provided. Results found that not all kinds of sludge were suitably conditioned by hydrothermal treatment (HT) in term of the elevation of dewaterability. Higher hydrothermal temperature tended to enhance the dewaterability of SS rather than DS, which was supported by the variation of their physicochemical properties (including water distribution, bonding energy, extracellular polymeric substance (EPS), particles size, acid functional groups and zeta potential in this study). In addition, the changes in surface morphology suggested that the reverse effect of HT on sludge dewaterability was mainly due to their dewatering behavior. For SS, the destruction of EPS structure leaded to the release of bound water, thereby strengthening sludge dewatering. Conversely, "Bridging effect" generated by lignocellulose in DS was beneficial for sludge dewatering; however, the increasing hydrothermal temperature degraded part of lignocellulose and weakened "bridging effect", finally resulting in worse dewaterability of DS. (c) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Language英语
Funding Project[National Natural Science Foundation of China] ; [Special Program for Key Basic Research of the Natural Science Foundation of Guangdong Province]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/20743
Collection中国科学院广州能源研究所
Affiliation中国科学院广州能源研究所
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhuang Xiuzheng,Huang Yanqin,Liu Huacai,et al. Relationship between physicochemical properties and dewaterability of hydrothermal sludge derived from different source[J]. Journal of Environmental Sciences,2018,69:261.
APA Zhuang Xiuzheng,Huang Yanqin,Liu Huacai,Yuan Hongyou,Yin Xiuli,&Wu Chuangzhi.(2018).Relationship between physicochemical properties and dewaterability of hydrothermal sludge derived from different source.Journal of Environmental Sciences,69,261.
MLA Zhuang Xiuzheng,et al."Relationship between physicochemical properties and dewaterability of hydrothermal sludge derived from different source".Journal of Environmental Sciences 69(2018):261.
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