Document Type : Research Paper
Authors
1 Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 Agricultural Engineering Research Group, Lorestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Khorramabad, Iran
3 Department of Agricultural Machinery Engineering, Faculty of Agriculture, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
Abstract
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Main Subjects
EXTENDED ABSTRACT
The depletion of fossil resources and the environmental impact of burning fossil fuels have heightened the importance of renewable energy sources, including biomass energy. One effective method for harnessing energy from biomass is the combined generation of electricity and heat from agricultural waste. Cogeneration, a highly efficient technology, produces both electricity and thermal energy using a variety of technologies and fuels, offering a cost-effective solution to reduce CO2 emissions. Given the significant amount of agricultural residues and the lack of proper management in the country, it is crucial to assess the potential for bioenergy production and to map the distribution of this renewable resource across different regions of Iran. This research, therefore, aims to evaluate the potential for bioenergy production from agricultural residues in Markazi Province, Iran.
Information for this study was gathered from relevant organizations, library sources, and agricultural statistics on crops (2016-17 to 2020-21) and horticulture (2017-21), covering a five-year period. This section of the research focuses on the geographical location of the region, crop and horticulture data, methods for calculating the theoretical and available energy of residues, the examination of simultaneous electricity and heat production, and the estimation of pollutant emissions from bioenergy production using agricultural residues.
The study results showed that the annual production of crops and horticulture in the province amounted to 1,194,134 tons. The theoretical biomass potential, theoretical energy potential, and available energy from their residues were calculated to be 910,069 tons, 15,424,483 GJ, and 3,340,869 GJ, respectively. The energy potential and the electrical and thermal power of the CHP (Combined Heat and Power) system from the total residues of the studied crops and horticulture were estimated at 263,449 MWh of electricity with a power of 37.65 MW and 406,994 MWh of heat with a power of 58.16 MW. Additionally, the global warming potential index was calculated to be 181,954.54 tons of CO2 equivalent. Among the crops studied, wheat had the highest energy potential, generating 115,457 MWh of electricity with a power of 16.50 MW and 129,890 MWh of heat with a power of 18.56 MW. In contrast, walnut residues had the lowest energy potential, producing 11,169 MWh of electricity with a power of 0.17 MW and 4,675 MWh of heat with a power of 0.67 MW.
Based on the per capita electricity consumption of 6.218 MWh in the province for 2021, the electrical energy generated from crop and horticultural residues could meet the needs of 42,369 residents. The findings indicate that Markazi province, Iran, has significant potential for bioenergy production from agricultural residues.
Conceptualization, M.Kh., M.S. and H.Gh.M.; methodology, M.Kh. and M.S.; software, M.S. and Sh.M.; validation, M.Kh. and M.S.; formal analysis, M.Kh., M.S. and H.Gh.M.; investigation, M.S.; resources, M.S. and Sh.M.; data curation, M.Kh., M.S., H.Gh.M. and Sh.M.; writing-original draft preparation, M.Kh. and M.S.; writing-review and editing, M.Kh. and M.S.; visualization, M.Kh. and H.Gh.M.; supervision, M.Kh. and M.S.; project administration, M.Kh. All authors have read and agreed to the published version of the manuscript.
The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding author.
The authors would like to acknowledge for all supports by Faculty of Agriculture, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
The study was approved by the Ethics Committee of the University of Tehran. authors avoided data fabrication, falsification, plagiarism, and misconduct.
The authors declare no conflicts of interest.