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<p>Second-generation (2G) bioethanol is a promising alternative energy source because it can reduce greenhouse gas (GHG) emissions that contribute to global warming and does not compete with food production. Several 2G bioethanol production strategies have been developed to enhance the efficiency of the production process. Integrated consolidated bioprocessing (ICBP) is the latest method, combining pretreatment and consolidated bioprocessing (CBP) in a single reactor. This research focuses on producing bioethanol from rice straw using the ICBP method and evaluating its environmental impacts. Four rice straw management scenarios, including open burning, landfilling, conventional bioethanol production, and ICBP bioethanol production, were conducted to compare their environmental performance using life cycle assessment (LCA). The results indicate that the ICBP method can produce bioethanol at a concentration of 10.85&#xa0;g/L for 29 days. For every 1 ton of rice straw, the bioethanol production scenario offers greater environmental benefits compared to the baseline scenarios of open burning and landfilling. Bioethanol production using the ICBP method reduces global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), human toxicity potential (HTP), and photochemical oxidation creation potential (POCP) by 28.27%, 29.18%, 22.73%, 24.22%, and 41.18%, respectively, compared to conventional bioethanol production. The ranking of rice straw management scenarios based on environmental benefits is as follows: ICBP bioethanol &gt; conventional bioethanol &gt; landfilling &gt; open burning.</p>

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Improved Environmental Benefit of Bioethanol Production From Rice Straw Using Integrated Consolidated Bioprocessing

  • 期刊论文

  • 发表日期：

    2025年12月26日

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  • Andhika Cahaya Titisan Sukma,
  • Budiyono Budiyono,
  • Ahmad Ni’matullah Al-Baarri

摘要

Second-generation (2G) bioethanol is a promising alternative energy source because it can reduce greenhouse gas (GHG) emissions that contribute to global warming and does not compete with food production. Several 2G bioethanol production strategies have been developed to enhance the efficiency of the production process. Integrated consolidated bioprocessing (ICBP) is the latest method, combining pretreatment and consolidated bioprocessing (CBP) in a single reactor. This research focuses on producing bioethanol from rice straw using the ICBP method and evaluating its environmental impacts. Four rice straw management scenarios, including open burning, landfilling, conventional bioethanol production, and ICBP bioethanol production, were conducted to compare their environmental performance using life cycle assessment (LCA). The results indicate that the ICBP method can produce bioethanol at a concentration of 10.85 g/L for 29 days. For every 1 ton of rice straw, the bioethanol production scenario offers greater environmental benefits compared to the baseline scenarios of open burning and landfilling. Bioethanol production using the ICBP method reduces global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), human toxicity potential (HTP), and photochemical oxidation creation potential (POCP) by 28.27%, 29.18%, 22.73%, 24.22%, and 41.18%, respectively, compared to conventional bioethanol production. The ranking of rice straw management scenarios based on environmental benefits is as follows: ICBP bioethanol > conventional bioethanol > landfilling > open burning.