Bikram Basak (한양대학교) | 한빛사논문 > 한빛사

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한양대학교

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Bioresour. Technol., 2022 Sep;360:127602 | https://doi.org/10.1016/j.biortech.2022.127602 Syntrophic bacteria- and Methanosarcina-rich acclimatized microbiota with better carbohydrate metabolism enhances biomethanation of fractionated lignocellulosic biocomponents

Bikram Basak^a,b, Swapnil M. Patil^a, Ramesh Kumar^a, Yongtae Ahn^a,b, Geon-Soo Ha^a, Young-Kwon Park^c, Moonis Ali Khan^d, Woo Jin Chung^e, Soon Woong Chang^e, Byong-Hun Jeon^a

^aDepartment of Earth Resources & Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
^bPetroleum and Mineral Research Institute, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
^cSchool of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
^dChemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
^eDepartment of Environmental Energy Engineering, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea

Corresponding author: Byong-Hun Jeon

Abstract

An inadequate lignocellulolytic capacity of a conventional anaerobic digester sludge (ADS) microbiota is the bottleneck for the maximal utilization of lignocellulose in anaerobic digestion. A well-constructed microbial consortium acclimatized to lignocellulose outperformed the ADS in terms of biogas productivity when fractionated biocomponents of rice straw were used to achieve a high methane bioconversion rate. A 33.3 % higher methane yield was obtained with the acclimatized consortium (AC) compared to that of ADS control. The dominant pair-wise link between Firmicutes (18.99–40.03 %), Bacteroidota (10.94–28.75 %), and archaeal Halobacteriota (3.59–20.57 %) phyla in the AC seed digesters indicated that the keystone members of these phyla were responsible for higher methane yield. A high abundance of syntrophic bacteria such as Proteiniphilum (1.22–5.19 %), Fermentimonas (0.71–5.31 %), Syntrophomonas (0.87–3.59 %), and their syntrophic partner Methanosarcina (4.26–18.80 %) maintained the digester stability and facilitated higher substrate-to-methane conversion in the AC seed digesters. The present combined strategy will help in boosting the ‘biomass-to-methane” conversion.

논문정보

형식Research article
게재일2022년 09월 (BRIC 등록일 2022-12-12)
연구진국내(교신)+국외 연구진
분야 생명과학 > 생물공학

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