Pyrolysis and biochar potential using crop residues and agricultural wastes in China |
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| Affiliation: | 1. Institute of Poyang Lake Eco-economics of Jiangxi University of Finance and Economics, Nanchang 330032 China;2. School of International Trade & Regional Studies, Inha University, Incheon 402-751, South Korea;1. School of Engineering, CREPS, Centre for Renewable Energy and Power Systems, Sandy Bay Campus, Dobson Road, Private Box 65, University of Tasmania, Hobart 7000, Australia;2. Tasmanian Institute of Agriculture, Sandy Bay Campus, Private Box 98, University of Tasmania, Hobart 7000 Australia;3. JSA Consulting Engineers Pty Ltd, Ellerslie House, 119 Sandy Bay Road, Sandy Bay 7005, Australia;4. Forestry Tasmania, 79 Melville Street, Hobart 7000, Australia;1. Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea;2. Korea Biochar Research Center & School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea;3. Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority, Cheongju 28115, Republic of Korea;4. Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;1. Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Petroleum and Chemical Engineering Programme Area, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P.O. Box 2909, Brunei Darussalam;1. University of Tuscia, Department of Science and Technology for Agriculture, Forests, Nature and Energy, Italy;2. BIOENERGY 2020+ GmbH, Inffeldgasse 21b, 8010 Graz, Austria;3. University of Strathclyde, Department of Civil & Environmental Engineering, Glasgow, United Kingdom;4. Università degli Studi di Reggio Calabria, Department of Agriculture, Reggio Calabria, Italy;5. Consiglio per la ricerca in agricoltura e l''analisi dell''economia agraria (CREA) Unità di ricerca per l’ingegneria Agraria, Via della Pascolare 16, Monterotondo, Roma, Italy;1. Aragón Institute of Engineering Research (I3A), University of Zaragoza, crta. Cuarte s/n, Huesca, E-22071, Spain;2. Technological College of Huesca, University of Zaragoza, crta. Cuarte s/n, Huesca, E-22071, Spain;3. Institute of Nanoscience of Aragón (INA), University of Zaragoza, crta. Cuarte s/n, Huesca, E-22071, Spain |
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| Abstract: | This preliminary study examines the feasibility and applications of pyrolysis and biochar in China to understand issues about bioenergy generation, agricultural cost savings and enhancement of atmospheric quality. Multiple agricultural and animal wastes are analyzed and quantitative measures of economic and environmental benefits are provided. The Poyang Lake, one of the most important clean water lakes in China, is examined to see how pyrolysis and biochar applications can be beneficiary to farmers and society in terms of the economic and greenhouse gas values. Rice straw, corn stover, poplar, orchard wastes, animal wastes and open pasture wastes are primary feedstocks for fast and slow pyrolysis. The results show that both fast and slow pyrolysis are profitable under current situations where corn stover-based pyrolysis yields the highest economic benefits but that of animal wastes-based can offset more GHG emissions. Rice straw yields a loss but it can still be a potential choice since the material is the most popular in study area. Sensitivity analysis is provided to understand the changes of economic and environmental benefits under various market conditions and the results indicate that in general, significant profits of pyrolysis and biochar application bring additional margin of safety and therefore, pyrolysis and biochar does not incur a loss unless input costs increase more than 53% to 64%. |
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| Keywords: | Pyrolysis-based electricity Biochar Greenhouse gas emissions Soil amendment Agricultural wastes |
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