Production of carbon-doped titanium dioxide (C–TiO2) from polytitanium-coagulated sludge as an adsorbent or photocatalyst for pollutant removals
作者： Yan-xia Zhao , Xiao-yan Li , Chang Tian , Jie-xi Wang
DOI: 10.1016/J.JCLEPRO.2020.121979
关键词:
摘要: Chemically enhanced primary sedimentation (CEPS) using titanium coagulants could produce the Ti-loaded sludge with promising material recycle and utilization options. This study investigated two approaches for the recovery and utilization of Ti-based CEPS sludge:(1) a current technology of sludge calcination in the absence of N 2 atmosphere to transform Ti to carbon-doped TiO 2 (C–TiO 2, with a low C content) as a photocatalyst, and (2) a prospective technology of carbonization of the sludge in the presence of N 2 …
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