Chemical Engineering Journal 297 (2016) 1–10 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.elsevier.com/locate/cej Hydrothermal treatment coupled with mechanical expression at increased temperature for excess sludge dewatering: Heavy metals, volatile organic compounds and combustion characteristics of hydrochar a,⇑ b c Liping Wang , Aimin Li , Yuzhi Chang College of Environment & Resources, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China School of Environmental Science & Technology, Dalian University of Technology, Industrial Ecology and Environmental Engineering Key Laboratory of Ministry of Education, Dalian 116024, Liaoning, China Environmental Monitoring Center, Jining Environmental Protection Bureau, Ulanqab 012000, Inner Mongolia, China highl i ghts graphical a bstrac t Potential application of hydrochar as solid fuel or soil conditioner was identiﬁed. Energy rich solid fuel was obtained during coupled dewatering of excess sludge. Hydrochar combustion followed pathways of devolatilization ﬁrst and then burning. Multistage reaction process of hydrochar combustion is derived. Heavy metals and VOCs showed a signiﬁcant enrichment in obtained hydrochar. article i nfo abstract Article history: Hydrothermal treatment coupled with mechanical expression at increased temperature in two separate Received 11 December 2015 cells is effective for the dewatering of excess sludge with low energy consumption. The obtained hydro-
Chemical Engineering Journal – Elsevier
Published: Aug 1, 2016
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