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Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh.
Department of Mechanical and Chemical Engineering, Islamic University of Technology, Organization of the Islamic Conference (OIC), Board Bazar, Gazipur-1704, Bangladesh
* Author to whom correspondence should be addressed.
Received: 23 January 2009; in revised form: 6 March 2009 / Accepted: 10 March 2009 / Published: 12 March 2009
Abstract: In this study, the energy utilization and environmental aspects of the rice processing industries in Bangladesh was analyzed. Rice husk, a milling by-product of rice, is used as a source of thermal energy to produce steam for parboiling of raw rice. The rice is mostly dried on a concrete floor under the sunshine. In mechanical drying, rice husks are used as a source of primary energy. In Bangladesh, the annual estimated energy used in 2000 for the drying of rice by sunshine was 10.7 million GJ and for drying and parboiling by rice husks it was 48.2 million GJ. These amounts will increase to 20.5 and 92.5 million GJ in 2030, respectively. Electrical energy consumption for mechanical drying and milling of rice was calculated as 1.83 million GJe and 3.51 million GJe in 2000 and in 2030, respectively. Biogenic carbon dioxide emission from burning of rice husk is renewed every year by the rice plant. Both the biogenic and non-biogenic carbon dioxide emissions in 2000 were calculated as 5.7 and 0.4 million tonnes, respectively, which will increase to 10.9 and 0.7 million tonnes in 2030. The demand of energy for rice processing increases every year, therefore, energy conservation in rice processing industries would be a viable option to reduce the intensity of energy by increasing the efficiency of rice processing systems which leads to a reduction in emissions and an increased supply of rice husk energy to other sectors as well.
Keywords: Rice parboiling; Drying; Rice milling; Energy; Emissions
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MDPI and ACS Style
Ahiduzzaman, M.; Sadrul Islam, A.K.M. Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh. Energies 2009, 2, 134-149.
Ahiduzzaman M, Sadrul Islam AKM. Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh. Energies. 2009; 2(1):134-149.
Ahiduzzaman, Mohammed; Sadrul Islam, Abul K.M. 2009. "Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh." Energies 2, no. 1: 134-149.