Simultaneous production of hydrogen and volatile fatty acids from anaerobic digestion of Macrocystis pyrifera biomass residues

作     者：ZHAO Xiao-xian FAN Xiao-lei XUE Zhi-xin YANG Zhi-man YUAN Xian-zheng QIU Yan-ling GUO Rong-bo 赵晓娴;范晓蕾;薛志欣;杨智满;袁宪政;邱艳玲;郭荣波

作者机构：Shandong Industrial Engineering Laboratory of Biogas Production & Utilization(Key Laboratory of Biofuels)Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences College of Chemical Science and Engineering Qingdao University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2017年第24卷第6期

页      面：1281-1287页

核心收录：

学科分类：081702[工学-化学工艺] 081703[工学-生物化工] 08[工学] 0817[工学-化学工程与技术] 0836[工学-生物工程] 082203[工学-发酵工程] 0822[工学-轻工技术与工程] 

基　　金：Project(2015GSF117016)supported by the Key Research&Development Project of Shandong Province,China Project(2014BAC31B01)supported by the National Science and Technology Pillar Program during the 12th Five-Year Plan Period China Project(2015GSF115037)supported by the Foundation of Key Program of Science and Technology of Shandong Province,China 

主　　题：Macrocystis pyrifera biomass residues pretreatment fermentation hydrogen 

摘      要：The Macrocystis pyrifera biomass residues(MPBRs) after extraction of algin could be applied in anaerobic fermentation. The effects of different pretreatment conditions, substrate concentrations and initial pH values on hydrogen and volatile fatty acid(VFA) production during the anaerobic fermentation of MPBRs were evaluated. The optimal pretreatment conditions, substrate concentration, initial pH values were determined as thermo-alkaline pretreatment at 100 °C with 0.1 mol/L NaOH, 40 g/L and 7.0, respectively. Under these conditions, the maximum hydrogen production was 11.38 mL/g(volatile solids, VS), which was approximately 23 times higher than that of untreated MPBRs. Furthermore, the maximum total volatile fatty acid(TVFA) yield was found to be 0.055 g/g(VS) and the VFA mainly consisted of acetic and butyric acids. The results indicate that the yield of TVFA is positively correlated with hydrogen production, and the MPBRs could produce hydrogen and TVFA simultaneously. In addition, thermo-alkaline pretreatment is proven to be the best method for hydrogen and VFA production.