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1. The effects of catalysts on the conversion of organic matter and bio-fuel production in the microwave pyrolysis of sludge at different temperatures

Author

Xianghua Zhang, Xiaofei Huang, Rui Ma, Yang Zhou, Xuxin Zhao, Peixin Zhang, Shichang Sun, Lin Fang, Shenzhen Univerisity [Shenzhen], Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), This paper was supported by the China National Natural Science Foundation (50906058), the Natural Science Foundation of SZU (No. 827-000037), and the Shenzhen Science and Technology Planning Project (Grant Nos. JCYJ20150828113927076, JCYJ20130329113322731)., Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Environmental Engineering, Materials science, Hot Temperature, 020209 energy, Bio-fuel, Catalytic microwave pyrolysis, Bioengineering, 02 engineering and technology, Activation energy, 010501 environmental sciences, Fluid catalytic cracking, CaO catalyst, 01 natural sciences, 7. Clean energy, Ferric Compounds, Sludge, Catalysis, [CHIM.GENI]Chemical Sciences/Chemical engineering, 0202 electrical engineering, electronic engineering, information engineering, Organic matter, Microwaves, Waste Management and Disposal, 0105 earth and related environmental sciences, chemistry.chemical_classification, Waste management, Sewage, Renewable Energy, Sustainability and the Environment, [SDE.IE]Environmental Sciences/Environmental Engineering, Temperature, General Medicine, [CHIM.CATA]Chemical Sciences/Catalysis, Cracking, chemistry, Chemical engineering, 13. Climate action, Biofuel, Yield (chemistry), Biofuels, Pyrolysis, Fe(2)O(3) catalyst
Abstract

International audience; Adding catalyst could improve the yields and qualities of bio-gas and bio-oil, and realize the oriented production. Results showed that the catalytic gas-production capacities of CaO were higher than those of Fe2O3, and the bio-gas yield at 800°C reached a maximum of 35.1%. Because the polar cracking active sites of CaO reduced the activation energy of the pyrolysis reaction and resulted in high catalytic cracking efficiencies. In addition, the quality of bio-oil produced by CaO was superior to that by Fe2O3, although the bio-oil yield of CaO was relatively weak. The light bio-fuel oriented catalytic pyrolysis could be realized when adding different catalysts. At 800°C, CaO was 45% higher than Fe2O3 in aspect of H2 production while Fe2O3 was 103% higher than CaO in aspect of CH4 production. Therefore, CaO was more suitable for H2 production and Fe2O3 was more suitable for CH4 production.

Published
2017

2. Generation of Solid Recovered Fuel from Sewage Sludge Compost

Author

Kristina Makarskienė, Irina Kliopova, and The paper presents the results of research, which was carried out in KTU APINI during implementation of one stage of PF7 program project 'Polygeneration of energy, fuels and fertilisers from biomass residues and sewage sludge (ENERCOM)' during 2009-2010.

Subjects
Briquette, Environmental Engineering, Peat, Waste management, Renewable Energy, Sustainability and the Environment, Compost, Pellets, Biomass, Management, Monitoring, Policy and Law, engineering.material, Solid recovered fuel, sewage sludge, compost, sawdust, peat, pellets, briquettes, environmental impact assessment, Pollution, Environmental Research, Engineering, visual_art, engineering, visual_art.visual_art_medium, Environmental science, Sawdust, SRF production from biodegradable waste, Waste Management and Disposal, Refuse-derived fuel, Sludge
Abstract

The paper presents results of the research which was carried out in KTU APINI when implementing one stage of the PF7 program project “Polygeneration of energy, fuels, and fertilizers from biomass residues and sewage sludge (ENERCOM)” (No TREN/FP7/EN/218916). The research objective was to assess possibilities of producing solid recovered fuel (SRF) from compost produced from pre-treated sewage sludge and biomass residuals in “Soil-Concept” plant (Luxemburg). Feasibility of producing pellets and briquettes using the composites of compost, sawdust, and peat was analyzed. Technical and environmental evaluations of SRF production were carried out on the basis of pelleting and briquetting tests. Main chemical and physical parameters of produced SRF were analyzed and compared to the recovered fuel classificatory (CEN/TC 343). All pellets and briquettes, produced during the experiment, were attributed to a certain class of recovered fuel. Results of technical and environmental evaluations of SRF production and their burning as well as conclusions and recommendations made are presented. DOI: http://dx.doi.org/10.5755/j01.erem.62.4.2742

Published
2013