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Use of sewage sludge biochar as a catalyst in production of biodiesel through thermally induced transesterification

biochar 2022年第1期4卷 74-88页

作者： Sungyup Jung Minyoung Kim Yong-Hyun Kim Kun-Yi Andrew Lin Wei-Hsin Chen Yiu Fai Tsang Eilhann E.Kwon Department of Environmental Engineering Kyungpook National UniversityDaegu 41566Republic of Korea. Department of Earth Resources and Environmental Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Civil EnvironmentalResources and Energy EngineeringJeonbuk National UniversityJeollabukdoJeonju 54896Republic of Korea Department of Environmental Engineering and Innovation and Development Center of Sustainable Agriculture National Chung Hsing University250 Kuo-Kuang RoadTaichungTaiwanChina Department of Aeronautics and Astronautics National Cheng Kung UniversityTainan 701TaiwanChina Research Center for Smart Sustainable Circular Economy Tunghai UniversityTaichung 407TaiwanChina Department of Mechanical Engineering National Chin-Yi University of TechnologyTaichung 411TaiwanChina Department of Scienceand Environmental Studies The Education University of Hong KongTai PoNew Territories999077 Hong KongHong Kong

Sewage sludge(SS)is a residual/semi-solid material produced from industrial and municipal wastewater treatment *** contains a high content of lipids and earth alkaline metals that can be used as catalysts for various chemical applications;however,its valorization has rarely been the focus of *** study demonstrates that SS could be a promising raw material for biodiesel production and a biochar catalyst to promote the reaction kinetics of *** induced transesterification of the SS extract(SSE)was performed in comparison with the conventional homogeneous *** biochar was fabricated via *** highest yield(33.5 wt.%per SSE)of biodiesel production was achieved in 1 min of reaction at 305℃via thermally induced transesterification in the presence of SS biochar,while the yield of biodiesel from(trans)esterification with 5 wt.%H_(2)SO_(4)was less than 1%even after 24 *** reaction kinetics(biochar expedited the reaction ***,the integrated/hybridized process for thermally induced transesterification and pyrolysis of the solid residue of SS was experimentally proved for the valorization of SS in this *** that SS is being disposed of as a waste material and generates toxic chemicals in the environment,its valorization into value-added biodiesel and a catalyst could be an environmentally benign and sustainable technique.

关键词： Circular economy Waste-to-energy biochar catalyst Biodiesel Wastewater treatment

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