期刊
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
卷 40, 期 5, 页码 565-571出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2017.1399173
关键词
Biochar; heavy metal; hydrothermal; pyrolysis; sewage sludge
资金
- Research Project of Hubei Provincial Department of Education [Q20162702]
Behavior of heavy metals in biochar obtained from sewage sludge with the pyrolysis and hydrothermal processes was comparatively studied. Increase of reaction temperature resulted in increased pH of pyrochar (7.75 similar to 8.96) and hydrochar (5.94 similar to 7.00), while yields of pyrochar and hydrochar were both decreased. For hydrochar, temperature higher than 30 was found to be adverse to the immobilization of Cu and Zn. In comparison with hydrothermal process, increase of reaction temperature in the pyrolysis process was beneficial to the immobilization of Cu and Pb, while adverse effect was found on Cd and Zn.
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