The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, 126 Prachauthit Road, Bangkok 10140, Thailand; Center for Energy Technology and Environment, Ministry of Education, Thailand.
Bioresour Technol. 2013 Dec;150:412-9. doi: 10.1016/j.biortech.2013.09.015. Epub 2013 Sep 13.
Life cycle assessment of four rice straw utilization systems including; (1) 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-à-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.
对包括以下 4 种稻秆利用系统的生命周期评估：（1）直接燃烧用于发电；（2）生物化学转化为生物乙醇和沼气；（3）热化学转化为生物二甲醚；（4）作为肥料还田。以比较它们的环境性能。结果表明，就减少全球变暖潜势和资源消耗潜势而言，每吨干稻秆的生物乙醇途径具有最高的环境可持续性。稻秆生物二甲醚在减少酸化潜势方面更具优势。稻秆发电和肥料也带来了一些环境效益。稻秆利用的主要环境效益来自于避免了在田间就地焚烧稻秆所带来的有害影响。为提高稻秆作为燃料和肥料利用的环境可持续性提出了建议。
