Article
Engineering, Chemical
Md. Sanaul Huda, Nurun Nahar
Summary: Corn ethanol bio-refineries can increase oil recovery from distillers' dried grains with solubles (DDGS) and enhance oil partitioning from whole stillage (WS) by adding ethanol and adjusting temperature. The results showed that ethanol treatment improved oil recovery from DDGS and oil partition in WS, providing a beneficial outcome for ethanol plants.
Article
Energy & Fuels
Jianming Yu, Zhaoxian Xu, Hao He, Sitong Chen, Shengwei Wang, Yang Yu, Mingjie Jin
Summary: This study demonstrates that integration of corn slurry into corn stover hydrolysate can improve xylose fermentation and enhance ethanol titer.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Green & Sustainable Science & Technology
Maryam Molaverdi, Keikhosro Karimi, Safoora Mirmohamadsadeghi, Mats Galbe
Summary: Sodium carbonate pretreatment can improve ethanol concentration at high solids and low enzyme loadings, and steam pretreatment can further increase ethanol concentration on this basis.
Article
Engineering, Environmental
Kenneth Ruffatto, Seyed Aryan Emaminejad, Ankita Juneja, Chinmay Kurambhatti, Andrew Margenot, Vijay Singh, Roland D. Cusick
Summary: The study shows that corn ethanol biorefineries and centralized water resource recovery facilities have significant potential for phosphorus recovery and reuse. This potential is particularly huge in corn-producing regions, offering opportunities for a circular phosphorus economy.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Lan Wang, Yaoyao Zhou, Yang Liu, Hongzhang Chen
Summary: This study investigated the feasibility of N-2 periodic pulsation to improve ethanol productivity in solid state fermentation. Results showed that N-2 periodic pulsation significantly increased ethanol productivity, reduced CO2 concentration, and enhanced metabolic flux towards ethanol production.
Article
Engineering, Environmental
Arti Devi, Anita Singh, Somvir Bajar, Deepak Pant, Zaheer Ud Din
Summary: Biomass as a resource offers environmental benefits and biofuel production is gaining global interest due to its importance from both environmental and economic perspectives.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Ramkrishna Singh, Philip Lessard, R. Michael Raab, Vijay Singh
Summary: This study found that adding phytase corn during the dry-grind process can increase ethanol yield by 1%-6.5% and improve the nutritional quality of DDGS. Additionally, it can significantly reduce the phytic acid content in DDGS.
Article
Green & Sustainable Science & Technology
Changsheng Su, Changwei Zhang, Yilu Wu, Qian Zhu, Jieyi Wen, Yankun Wang, Jianbo Zhao, Yicheng Liu, Peiyong Qin, Di Cai
Summary: In this study, a novel fed-batch strategy was used to intensify ABE fermentation, addressing technical barriers such as high inhibitors content and low yield. The results showed significant improvement in biobutanol production, demonstrating the potential and applicability of this method in large-scale ABE productions.
Article
Microbiology
Gabriela Muller, Victor R. de Godoy, Marcelo G. Dario, Eduarda H. Duval, Sergio L. Alves-Jr, Augusto Bucker, Carlos A. Rosa, Barbara Dunn, Gavin Sherlock, Boris U. Stambuk
Summary: By studying the genetic characteristics of different industrial yeast strains used in Brazil for fuel ethanol and cachaca production, it was found that invertase activity may not limit sucrose fermentation. A modified industrial yeast strain with altered sucrose metabolism was able to consume the disaccharide directly and achieve higher ethanol production.
Article
Thermodynamics
Xinchuan Yuan, Guannan Shen, Sitong Chen, Xiangxue Chen, Chengcheng Zhang, Shuangmei Liu, Mingjie Jin
Summary: Corn stover pretreated by DLC exhibited higher digestibility and fermentability compared to traditional pre-treatments. However, the xylose fermentation during SHCF was unsatisfactory at high solid loadings. In this study, modified SSCF was adopted to promote xylose utilization and ethanol yield. A novel strategy, Fed-batch of DLC Biomass and Enzyme (FBE), showed higher sugar conversion, xylose consumption, and superior ethanol yield compared to SHCF and traditional SSCF.
Article
Biotechnology & Applied Microbiology
Kevy Pontes Eliodorio, Gabriel Caetano de Gois E. Cunha, Brianna A. White, Demisha H. M. Patel, Fangyi Zhang, Ewald H. Hettema, Thiago Olitta Basso, Andreas Karoly Gombert, Vijayendran Raghavendran
Summary: Blocking mitophagy by deleting the mitophagy receptor gene ATG32 in S. cerevisiae did not lead to a significant improvement in cell viability or ethanol levels during fermentation in commercial bioethanol strains, highlighting the need for further research to determine the role of autophagic processes in fermentation.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Agricultural Engineering
Jikai Zhao, Danyi Feng, Juhee Lee
Summary: This study used life-cycle assessment (LCA) to evaluate the environmental and human health impacts of four ethanol production scenarios. The results showed that using CO2 for neutralization and C6/C5 yeast for fermentation had significant benefits in terms of carcinogenicity, non-carcinogenicity, respiratory effect, ecotoxicity, and fossil fuel depletion. The findings highlight the importance of chemical and strain selection in determining environmental and human health impacts.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Applied
David B. Johnston, Nhuan P. Nghiem
Summary: The study demonstrates the efficient co-fermentation of pretreated biomass with corn to produce cellulosic ethanol, with yields similar to those from biomass alone. This method eliminates many economic and processing issues faced by standalone cellulosic ethanol facilities.
Article
Food Science & Technology
Gitanshu Bhatia, Ankita Juneja, David Johnston, Kent Rausch, M. E. Turnbleson, Vijay Singh
Summary: Amylose lipid complexes (AMLs) are likely to form during liquefaction of ground corn in the dry grind process. Factors such as liquefaction temperature, corn particle size, slurry solids content, and different commercial alpha-amylases have significant effects on AML formation. Increasing liquefaction temperature to above 100 degrees C has the most predominant effect on reducing AML formation.
Article
Agricultural Engineering
Huanan Li, Wenjing Xiao, Jiashu Liu, Qiuping Ran, Rui Wang, Cairong Yu, Xinyuan Zhang, Huiting Song, Zhengbing Jiang
Summary: It was found that rhamnolipid is an effective surfactant that significantly enhances ethanol production by engineered Saccharomyces cerevisiae in the fermentation of corn stover. The combination strategy of laccase pretreatment and rhamnolipid addition further boosts ethanol production.
BIORESOURCE TECHNOLOGY
(2022)