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Environmental performance comparison of parboiled rice production

Authors:

E Nadeeshani,

University of Moratuwa, LK
About E
Department of Chemical and Process Engineering, Faculty of Engineering
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M.Y. Gunasekera

University of Moratuwa, LK
About M.Y.
Department of Chemical and Process Engineering, Faculty of Engineering
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Abstract

Parboiling is a process that paddy undergoes in rice production which consumes energy, water and other environmental resources. This paper presents an assessment of environmental performance of paddy parboiling methods adopted in Sri Lanka by using life cycle assessment approach. Two hot soaking methods utilising mechanical drying and sun drying and one parboiling paddy method where cold soaking is utilised are considered for comparison in this assessment. For all methods, processes from paddy harvesting to rice cooking are included in the system with a functional unit of production of one ton of parboiled rice. According to the results, the parboiling method with hot soaking and mechanical drying showed acidification and human toxicity impacts, 0.430 kg SO2 eq. and 0.552 kg 1,4-DCB eq. respectively. Cold soaking of paddy gave higher impact results in eutrophication compared to hot soaking.

How to Cite: Nadeeshani, E. and Gunasekera, M.Y., 2021. Environmental performance comparison of parboiled rice production. Journal of the National Science Foundation of Sri Lanka, 49(2), pp.137–155. DOI: http://doi.org/10.4038/jnsfsr.v49i2.8849
Published on 14 Sep 2021.
Peer Reviewed

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