生物炼制
生物转化
木质素
纤维素
生物制氢
羟基烷酸
化学
木质纤维素生物量
微生物联合体
生物量(生态学)
生物净化
制浆造纸工业
纤维素酶
食品科学
凝固酶杆菌
生物化学
有机化学
发酵
细菌
微生物
生物
原材料
农学
制氢
遗传学
工程类
催化作用
作者
S. Kavitha,R. Yukesh Kannah,M. Gunasekaran,Indranil Chattopadhyay,P. Sivashanmugam,Vinod Kumar,Gopalakrishnan Kumar,J. Rajesh Banu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-03-15
卷期号:11 (12): 4606-4622
被引量:6
标识
DOI:10.1021/acssuschemeng.2c06350
摘要
A sustainable lignocellulosic biomass-based biorefinery requires complete utilization and valorization of the biomass components. In the present study, a phase-separated pretreatment (chemo mechanical─delignification followed by bacterial pretreatment) was performed to fractionate lignin and cellulose-rich residue from rice straw biomass (RSB) to utilize lignin for polyhydroxyalkanoates (PHA) and cellulose-rich residue for biohydrogen production. A higher lignin removal of 81.4% was obtained through combined H2O2–homogenizer pretreatment. The lignin was utilized as a substrate by Bacillus cereus for PHA production. The cellulose-rich delignified RSB was hydrolyzed with cellulase-secreting bacteria. A higher chemical oxygen demand solubilization of 38.2% was achieved in delignified and bacterially (Delig-Bac) pretreated RSB than bacterially pretreated (Bac) alone (22.9%) and control (3.43%). A higher cellulose solubilization of 35.8% was obtained in Delig-Bac pretreated RSB than Bac alone (21.5%). A higher PHA concentration, content, and yield of 480 mg/L, 56%, and 561 mg/g were obtained from 2.970 g/L of lignin. Higher biohydrogen production of 66 mL/gVS was achieved in Delig-Bac pretreated RSB. The economic analysis revealed that Delig-Bac was found to be economically feasible with a net profit of 4.18 USD/m3 when compared to Bac (−457.4 USD/m3).
科研通智能强力驱动
Strongly Powered by AbleSci AI