Using waste CO<sub>2</sub> to increase ethanol production from corn ethanol biorefineries [electronic resource] : Techno-economic analysis

 0 Người đánh giá. Xếp hạng trung bình 0

Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 666.9 Masonry adhesives

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020

Mô tả vật lý: Size: Article No. 115964 : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 262610

 Sustainable conversion of carbon dioxide (CO<
 sub>
 2<
 /sub>
 ) to value-added chemicals or fuels shifts a linear ?cradle to grave chemicals or fuels manufacturing model? to a circular carbon economy. A key consideration for CO<
 sub>
 2<
 /sub>
  utilization is the economic viability of converting specific CO<
 sub>
 2<
 /sub>
  sources based on scale, purity, etc. Among different CO<
 sub>
 2<
 /sub>
  sources, the corn dry mill ethanol plant with onsite waste CO<
 sub>
 2<
 /sub>
  upgrading is considered as a low hanging fruit strategy for implementing CO<
 sub>
 2<
 /sub>
  utilization with minimum requirements for gas purification. This study investigates the detailed techno-economic analysis of using a hybrid bio-electrochemical process to convert waste CO<
 sub>
 2<
 /sub>
  streams from corn dry mill facilities into ethanol and demonstrates the impact of CO<
 sub>
 2<
 /sub>
  utilization on the biorefinery economics. The bio-electrochemical CO<
 sub>
 2<
 /sub>
  conversion process combines water electrolysis to hydrogen (H<
 sub>
 2<
 /sub>
 ), electrolysis of CO<
 sub>
 2<
 /sub>
 -to-carbon monoxide (CO), and gas fermentation to ethanol. With onsite CO<
 sub>
 2<
 /sub>
  conversion, total ethanol yield can be potentially improved by 45%. In this study, variations of H<
 sub>
 2<
 /sub>
 :CO ratio ranging from 0 to 5 are explored to understand the impact of gas mixture composition on economic viability. The techno-economic analysis results show single-pass carbon yield in the biological conversion step can be potentially improved up to 100% when using H<
 sub>
 2<
 /sub>
  as an alternative energy source. Upgrading waste CO<
 sub>
 2<
 /sub>
  generated from a corn dry mill facility via biological CO<
 sub>
 2<
 /sub>
  to ethanol conversion is likely to be cost effective under the following conditions: high CO<
 sub>
 2<
 /sub>
  electrolysis energy efficiency (=70% theoretical), low electricity cost (=$0.02/kWh), and high CO<
 sub>
 2<
 /sub>
  electrolysis conversion efficiency (=50% CO<
 sub>
 2<
 /sub>
  input).
Tạo bộ sưu tập với mã QR

THƯ VIỆN - TRƯỜNG ĐẠI HỌC CÔNG NGHỆ TP.HCM

ĐT: (028) 71010608 | Email: tt.thuvien@hutech.edu.vn

Copyright @2024 THƯ VIỆN HUTECH