文献类型：期刊文献

英文题名：Enhanced fermentative hydrogen production from high-strength molasses by oyster shell conditioning: Performance and mechanisms

作者：Zhang, Shoujun[1,2];Sun, Chengqi[1,2];Guo, Guangping[1,2];Ren, Peiliang[1,2];Deng, Banglin[1,2];Sun, Yin[1,2];Zhang, Kun[1,2]

机构：[1]Guangdong Ocean Univ, Naval Architecture & Shipping Coll, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China

年份：2026

卷号：439

外文期刊名：BIORESOURCE TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001575428400001)、、WOS

基金：This work was supported by the Guangdong Basic and Applied Basic Research Foundation (grant number 2024A1515011861); the Project from the Department of Education of Guangdong Province (grant number 2024ZDZX4059); and the Program for Scientific Research Start-up Funds of Guangdong Ocean University.

语种：英文

外文关键词：Hydrogen production; Molasses; pH conditioning; Oyster shell; Microbial community; Metabolic pathway; Metal element

外文摘要：The effect of oyster shell conditioning (OS) on enhancing fermentative H-2 production from high-strength molasses was investigated in comparison with that with CaCO3 conditioning (CC) and that without alkaline additives (NA). Results indicated that the H-2 yield of OS (2841 mL/L) was slightly higher than that of CC (2428 mL/L), and both were significantly (p < 0.05) higher than that of NA (1702 mL/L). Moreover, OS and NA exhibited similar performance on total sugar utilization, pH, alkalinity, and liquid end products, which were significantly (p < 0.05) superior to those of NA. Compared with NA, both CC and OS presented enhanced NADH-producing pathways and suppressed NADH-consuming pathways, suggesting that more H-2 might be generated via NADH oxidation. For OS, Veillonella and Kurthia might play crucial roles in the utilization of complex substrates, and magnesium and iron as key components and efficient activators of enzymes contributed positively to H-2 production.