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Wang J, Xu C, Zhang W, Hong Y, Shen G, Wang W, Tang H, Zhang S, Pan J, Wang W. Synergistic effect of two bacterial strains promoting anaerobic digestion of rice straw to produce methane. ENVIRONMENTAL RESEARCH 2024; 252:118974. [PMID: 38649016 DOI: 10.1016/j.envres.2024.118974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/12/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
A large amount of agricultural waste causes global environmental pollution. Biogas production by microbial pretreatment is an important way to utilize agricultural waste resources. In this study, Sporocytophaga CG-1 (A, cellulolytic strain) was co-cultured with Bacillus clausii HP-1 (B, non-cellulolytic strain) to analyze the effect of pretreatment of rice straw on methanogenic capacity of anaerobic digestion (AD). The results showed that weight loss rate of filter paper of co-culture combination is 53.38%, which is 29.37% higher than that of A. The synergistic effect of B on A can promote its degradation of cellulose. The cumulative methane production rate of the co-culture combination was the highest (93.04 mL/g VS substrate), which was significantly higher than that of A, B and the control group (82.38, 67.28 and 67.70 mL/g VS substrate). Auxiliary bacteria can improve cellulose degradation rate by promoting secondary product metabolism. These results provide data support for the application of co-culture strategies in the field of anaerobic digestion practices.
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Affiliation(s)
- Jinghong Wang
- Key Laboratory of Low -Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China; College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Congfeng Xu
- Key Laboratory of Low -Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China; College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Wei Zhang
- Key Laboratory of Low -Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Yanhua Hong
- Key Laboratory of Low -Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Guinan Shen
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Weiwei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Hongzhi Tang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Shenglong Zhang
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China; Heilongjiang Guohong Environmental Co., LTD, Harbin, 150028, PR China
| | - Junting Pan
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Weidong Wang
- Key Laboratory of Low -Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China; College of Life Science, Northeast Forestry University, Harbin, 150040, PR China; College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China.
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Gundekari S, Karmee SK. Catalytic Conversion of Levulinic Acid into 2-Methyltetrahydrofuran: A Review. Molecules 2024; 29:242. [PMID: 38202825 PMCID: PMC10780552 DOI: 10.3390/molecules29010242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/14/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Biomass-derived furanics play a pivotal role in chemical industries, with 2-methyltetrahydrofuran (2-MTHF), a hydrogenated product of levulinic acid (LA), being particularly significant. 2-MTHF finds valuable applications in the fuel, polymer, and chemical sectors, serving as a key component in P-series biofuel and acknowledged as a renewable solvent for various chemical processes. Numerous research groups have explored catalytic systems to efficiently and selectively convert LA to 2-MTHF, using diverse metal-supported catalysts in different solvents under batch or continuous process conditions. This comprehensive review delves into the impact of metal-supported catalysts, encompassing co-metals and co-catalysts, on the synthesis of 2-MTHF from LA. The article also elucidates the influence of different reaction parameters, such as temperature, type and quantity of hydrogen source, and time. Furthermore, the review provides insights into reaction mechanisms for all documented catalytic systems.
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Affiliation(s)
- Sreedhar Gundekari
- Department of Engineering Chemistry, Koneru Lakshmaiah Education Foundation, KL (Deemed to be) University, R.V.S Nagar, Moinabad-Chilkur Rd, Aziznagar 500075, Telangana, India
| | - Sanjib Kumar Karmee
- The Odisha Renewable Energy Research Institute (ORERI), Subarnapur 767018, Odisha, India
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