title: Fast microwave-assisted catalytic pyrolysis of sewage sludge for bio-oil production.
abstract: In this study, fast microwave-assisted catalytic pyrolysis of sewage sludge was investigated for bio-oil production, with HZSM-5 as the catalyst. Pyrolysis temperature and catalyst to feed ratio were examined for their effects on bio-oil yield and composition. Experimental results showed that microwave is an effective heating method for sewage sludge pyrolysis. Temperature has great influence on the pyrolysis process. The maximum bio-oil yield and the lowest proportions of oxygen- and nitrogen-containing compounds in the bio-oil were obtained at 550°C. The oil yield decreased when catalyst was used, but the proportions of oxygen- and nitrogen-containing compounds were significantly reduced when the catalyst to feed ratio increased from 1:1 to 2:1. Essential mineral elements were concentrated in the bio-char after pyrolysis, which could be used as a soil amendment in place of fertilizer. Results of XRD analyses demonstrated that HZSM-5 catalyst exhibited good stability during the microwave-assisted pyrolysis of sewage sludge.
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Qinglong
authors.initials: Q
authors.lastname: Xie
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Peng
authors.initials: P
authors.lastname: Peng
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Shiyu
authors.initials: S
authors.lastname: Liu
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Min
authors.initials: M
authors.lastname: Min
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA; Biochemical Engineering College, Beijing Union University, No. 18, Fatouxili 3 Area, Chaoyang District, Beijing 100023, China.
authors.forename: Yanling
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang, Jiangxi 330047, China.
authors.forename: Yiqin
authors.initials: Y
authors.lastname: Wan
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Yun
authors.initials: Y
authors.lastname: Li
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Lin
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang, Jiangxi 330047, China.
authors.forename: Yuhuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Chen
authors.affiliation: Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang, Jiangxi 330047, China. Electronic address: ruanx001@umn.edu.
authors.forename: Roger
authors.initials: R
authors.lastname: Ruan
mesh_terms: D056804:Biofuels; D002384:Catalysis; D006358:Hot Temperature; D008872:Microwaves; D012722:Sewage; D018505:Waste Management; D014961:X-Ray Diffraction; D017641:Zeolites
chemical_list: D056804:Biofuels; D012722:Sewage; D017641:Zeolites
keywords: Bio-oil; Microwave; Pyrolysis; Sewage sludge; Zeolite