Ultrasonic and Thermal Pretreatments on Anaerobic Digestion of Petrochemical Sludge: Dewaterability and Degradation of PAHs

doi:10.1371/journal.pone.0136162

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	Ultrasonic and Thermal Pretreatments on Anaerobic Digestion of Petrochemical Sludge: Dewaterability and Degradation of PAHs
	Zhou, Jun 1; Xu, Weizhong 2; Wong, Jonathan W. C.3; Yong, Xiaoyu 1; Yan, Binghua 4; Zhang, Xueying 2; Jia, Honghua 1
	2015-09-01
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	10 期号:9
摘要	Effects of different pretreatment methods on sludge dewaterability and polycyclic aromatic hydrocarbons (PAHs) degradation during petrochemical sludge anaerobic digestion were studied. Results showed that the total biogas production volume in the thermal pretreatment system was 4 and 5 times higher than that in the ultrasound pretreatment and in the control system, and the corresponding volatile solid removal efficiencies reached 28%, 15%, and 8%. Phenanthrene, paranaphthalene, fluoranthene, benzofluoranthene, and benzopyrene removal rates reached 43.3%, 55.5%, 30.6%, 42.9%, and 41.7%, respectively, in the thermal pretreatment system, which were much higher than those in the ultrasound pretreatment and in the control system. Moreover, capillary suction time (CST) of sludge increased after pretreatment, and then reduced after 20 days of anaerobic digestion, indicating that sludge dewaterability was greatly improved after anaerobic digestion. The decrease of protein and polysaccharide in the sludge could improve sludge dewaterability during petrochemical sludge anaerobic digestion. This study suggested that thermal pretreatment might be a promising enhancement method for petrochemical sludge solubilization, thus contributing to degradation of the PAHs, biogas production, and improvement of dewaterability during petrochemical sludge anaerobic digestion.
文章类型	Article
WOS标题词	Science & Technology
DOI	10.1371/journal.pone.0136162
关键词[WOS]	WASTE-ACTIVATED-SLUDGE ; EXTRACELLULAR POLYMERIC SUBSTANCES ; URBAN SLUDGE ; BIODEGRADATION ; REMOVAL ; MATRIX ; FLOCS ; EPS
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
项目资助者	National Basic Research Program of China(2013CB733500) ; National Natural Science Foundation of China(21307058 ; Jiangsu Province Science Foundation for Youths(BK20130931) ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China(13KJB610006) ; Chinese Academy of Environmental and Application of Microbial Key Laboratory Fund Project(KLCAS-2013-05) ; 21207065)
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000360437700031
出版者	PUBLIC LIBRARY SCIENCE
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/10446
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Zhang, Xueying
作者单位	1.Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing, Jiangsu, Peoples R China 2.Nanjing Tech Univ, Coll Environm, Nanjing, Jiangsu, Peoples R China 3.Hong Kong Baptist Univ, Sinoforest Appl Res Ctr Pearl River Delta Environ, Dept Biol, Hong Kong, Hong Kong, Peoples R China 4.Chinese Acad Sci, Qingdao Inst Bioenergy & Bio Proc Technol, Lab Waste Valorisat & Water Reuse, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Jun,Xu, Weizhong,Wong, Jonathan W. C.,et al. Ultrasonic and Thermal Pretreatments on Anaerobic Digestion of Petrochemical Sludge: Dewaterability and Degradation of PAHs[J]. PLOS ONE,2015,10(9).
APA	Zhou, Jun.,Xu, Weizhong.,Wong, Jonathan W. C..,Yong, Xiaoyu.,Yan, Binghua.,...&Jia, Honghua.(2015).Ultrasonic and Thermal Pretreatments on Anaerobic Digestion of Petrochemical Sludge: Dewaterability and Degradation of PAHs.PLOS ONE,10(9).
MLA	Zhou, Jun,et al."Ultrasonic and Thermal Pretreatments on Anaerobic Digestion of Petrochemical Sludge: Dewaterability and Degradation of PAHs".PLOS ONE 10.9(2015).