Journal
BIORESOURCE TECHNOLOGY
Volume 150, Issue -, Pages 412-419Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.09.015
Keywords
Life cycle assessment; Rice straw; Biofuels; Fertilizer; Electricity
Funding
- King Mongkut's University of Technology Thonburi
- Thailand Research Fund [TRG5680017]
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Life cycle assessment of four rice straw utilization systems including; (I) direct combustion for electricity, (2) biochemical conversion to bio-ethanol and biogas, (3) thermo-chemical conversion to bio-DME, and (4) incorporation into the soil as fertilizer have been conducted to compare their environmental performances. The results showed that per ton of dry rice straw, the bio-ethanol pathway resulted in the highest environmental sustainability with regards to reductions in global warming and resource depletion potentials. Rice straw bio-DME was preferable vis-a-vis reduction in acidification potential. Rice straw electricity and fertilizer also brought about several environmental benefits. The key environmental benefit of rice straw utilization came from avoiding the deleterious effects from burning straw in situ in the field. Recommendations for enhancing environmental sustainability of rice straw utilization for fuels and fertilizer are provided. (C) 2013 Elsevier Ltd. All rights reserved.
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