So far, a large number of pretreatment methods have garnered significant attention aimed only at optimizing the reducing sugar and bioethanol yields. This study however, carried out pretreatment of sugarcane bagasse (SCB) using hydrothermal, organosolv, alkaline and alkaline peroxide pretreatment methods comparing their process performance. An evaluation of the energy consumption parameter during pretreatment showed lowest energy use (0.619 kWh/kg) during 5% alkaline peroxide pretreatment. The energy efficiency (0.162 kg bioethanol/kWh) was thus highest whereas the waste generation was lowest (38.895 kg waste/kg bioethanol) during alkaline peroxide pretreatment process. The solid biomass was utilized for enzymatic saccharification and bioethanol fermentation using SSF. Maximum enzyme efficiency and bioethanol yields achieved were 85.02% and 0.101 kg bioethanol/kg biomass respectively. Process performance evaluation can be projected to open up a new avenue for practical implementations of life cycle analysis (LCA) and techno-economic assessment aiding the circular bio-economy approach.

中文翻译：

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用于生物乙醇生产的木质纤维素生物质的不同化学预处理的工艺性能评估

到目前为止，大量的预处理方法已经引起了人们的广泛关注，其目的只是为了优化还原糖和生物乙醇的产量。然而，本研究使用水热、有机溶剂、碱性和碱性过氧化物预处理方法对甘蔗渣（SCB）进行预处理，比较其工艺性能。对预处理过程中能耗参数的评估表明，5% 碱性过氧化物预处理过程中的能耗最低（0.619 kWh/kg）。因此，在碱性过氧化物预处理过程中，能源效率（0.162千克生物乙醇/千瓦时）最高，而废物产生量最低（38.895千克废物/千克生物乙醇）。使用 SSF 将固体生物质用于酶促糖化和生物乙醇发酵。达到的最大酶效率和生物乙醇产量分别为 85.02% 和 0.101 kg 生物乙醇/kg 生物质。预计流程绩效评估将为生命周期分析（LCA）和技术经济评估的实际实施开辟一条新途径，以帮助循环生物经济方法。