利用木薯秸秆中的纤维素 C5 糖对生物乙醇生产的影响通过生命周期评估。
Impacts of utilization patterns of cellulosic C5 sugar from cassava straw on bioethanol production through life cycle assessment.
机构信息
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
出版信息
Bioresour Technol. 2021 Mar;323:124586. doi: 10.1016/j.biortech.2020.124586. Epub 2020 Dec 30.
Integrated processes of whole plant cassava bioethanol production using full components including cellulosic C5 sugar are proposed. The impacts of different utilization patterns of cellulosic C5 sugar on bioethanol production are investigated by life cycle assessment. Results show that for cassava straw bioethanol, process using cellulosic C5 sugar performs better, and the NER, renewability and GWP (global warming potential) are 0.94, 1.09 and 2929 kg CO eq. The integrated process WPC-2 that the cellulosic C5 sugar mash is fermented together with the cassava starch, is a better cellulosic C5 sugar utilization pattern with NER 1.49, renewability 2.20 and GWP 1579 kg CO eq. The process WPC-2 shows the potential to approach cassava bioethanol in terms of energy and environmental emissions. The downstream products are investigated and the E85 fuel from WPC-2 has higher application potential.
提出了利用包括纤维素 C5 糖在内的全组分的整株木薯生物乙醇生产的综合工艺。通过生命周期评估研究了纤维素 C5 糖的不同利用模式对生物乙醇生产的影响。结果表明，对于木薯秸秆生物乙醇，使用纤维素 C5 糖的工艺表现更好，NER、可再生性和 GWP（全球变暖潜能值）分别为 0.94、1.09 和 2929kg CO eq。集成工艺 WPC-2 是一种更好的纤维素 C5 糖利用模式，将纤维素 C5 糖醪与木薯淀粉一起发酵，NER 为 1.49、可再生性为 2.20、GWP 为 1579kg CO eq。WPC-2 工艺在能源和环境排放方面具有接近木薯生物乙醇的潜力。对下游产品进行了研究，发现 WPC-2 的 E85 燃料具有更高的应用潜力。
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