文献类型：期刊文献

英文题名：Substrate degradation, biodiesel production, and microbial community of two electro-fermentation systems on treating oleaginous microalgae Nannochloropsis sp

作者：Shi, Yue[1];Huang, Kaiguo[1];Pan, Xinxiang[2,3];Liu, Guobing[1];Cai, Yuhang[1];Zaidi, Asad A.[4];Zhang, Kun[1]

机构：[1]Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Peoples R China;[2]Guangdong Ocean Univ, Maritime Coll, Zhanjiang 524088, Guangdong, Peoples R China;[3]Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China;[4]Natl Univ Sci & Technol, Pakistan Navy Engn Coll, Dept Engn Sci, Karachi 75350, Pakistan

年份：2021

卷号：329

外文期刊名：BIORESOURCE TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000634860100011)、、EI(收录号：20211110061797)、Scopus(收录号：2-s2.0-85102601818)、WOS

基金：This work was supported by the National Key R&D Plan of China (2017YFC1404605) and the Natural Science Foundation of Heilongjiang (E2017020).

语种：英文

外文关键词：Electro-fermentation; Microbial electrolysis cell; Microbial fuel cell; Nannochloropsis; Biodiesel production

外文摘要：Electro-fermentation system (EFS) emerges its effectiveness on treating microalgae for biodiesel production, but much is unknown about biodegradation behaviors, biodiesel characteristics, and microbial community. Compared with conventional fermentation system (CFS), microbial electrolysis cell-based EFS (MEC-EFS) and microbial fuel cell-based EFS (MFC-EFS) were investigated for the performance while treating microalgae Nannochloropsis sp. Results indicated that MEC-EFS presented much higher first-order decomposition rate coefficients of carbohydrates and proteins (1.212/d and 0.951/d) than those of CFS (0.615/d and 0.794/d) and MFC-EFS (0.518/d and 0.415/d). Compared with MFC-EFS, MEC-EFS showed better electrochemical performance (2.17 A/m3 vs. 0.95 A/m3). Moreover, MEC-EFS reached the highest extracted lipid to biomass ratio (43.3%), followed by MFC-EFS (32.3%) and CFS (27.7%). By strengthened microbial biohydrogenation, MEC-EFS and MFC-EFS had higher saturated fatty acids ratio (78.8% and 70.6%) than that of CFS (56.1%). For MEC-EFS, enriched Ruminococcus and Geobacter in anodic biofilm might contribute to favorable biohydrogenation and electrochemical performance.