【摘要】 为了研究生物质电转气技术的环境影响，选用玉米杆、稻秸这2种生物质，采用生命周期评价（LCA）模型全面评价了生物质电转气技术的全生命周期过程，利用SimaPro软件对生物质的获取、生物质直燃发电、CH₄和H₂的生产、CH₄的运输及利用等阶段进行生命周期评价，得到各阶段主要的环境影响类型，并对比分析了玉米秆和稻秸的环境影响潜值。结果表明：海洋水生毒性、全球暖化、淡水水生毒性以及酸化是表现较为突出的环境影响类型；在海洋水生毒性这一环境指标上，稻秸电转气技术是玉米杆电转气技术的2.8倍；在全球暖化、人体毒性、酸化等环境影响类型上，玉米秆和稻秸的影响程度较为相似。更多还原

【Abstract】 To investigate the environmental impact of biomass power-to-gas technology, two types of biomass, corn stalks and rice straw were selected. The life cycle of biomass power-to-gas technology was comprehensively assessed using the life cycle assessment（LCA） model. By using SimaPro software, LCA was carried out in the stages of biomass harvesting, biomass direct combustion power generation, production of CH₄ and H₂, transportation and utilization of CH₄, to identify the main environmental impact categories at each stage, and a comparative analysis of the environmental impact potentials between corn stalks and rice straw was performed. Results show that marine aquatic toxicity, global warming, freshwater aquatic toxicity and acidification are the more prominent environmental impact categories. In terms of marine aquatic toxicity, the rice straw power-to-gas technology is 2.8 times higher than the corn stalks power-to-gas technology. In terms of environmental impact categories such as global warming, human toxicity and acidification, the impact levels of corn stalks and rice straw are relatively similar.更多还原