Syntrophic bacteria- and Methanosarcina-rich acclimatized microbiota with better carbohydrate metabolism enhances biomethanation of fractionated lignocellulosic biocomponents

被引：39

作者：

Basak, Bikram ^{[1
,2
]}

Patil, Swapnil M. ^{[1
]}

Kumar, Ramesh ^{[1
]}

Ahn, Yongtae ^{[1
,2
]}

Ha, Geon-Soo ^{[1
]}

Park, Young-Kwon ^{[3
]}

Khan, Moonis Ali ^{[4
]}

Chung, Woo Jin ^{[5
]}

Chang, Soon Woong ^{[5
]}

Jeon, Byong-Hun ^{[1
]}

机构：

[1] Hanyang Univ, Dept Earth Resources Environm Engn, 222 Wangsimni Ro,Seongdong Gu, Seoul 04763, South Korea

[2] Hanyang Univ, Petr & Mineral Res Inst, 222 Wangsimni Ro,Seongdong Gu, Seoul 04763, South Korea

[3] Univ Seoul, Sch Environm Engn, Seoul 02504, South Korea

[4] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia

[5] Kyonggi Univ, Dept Environm Energy Engn, 154-42 Gwanggyosan Ro,Yeongtong Gu, Suwonsi 16227, Gyeonggi Do, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 360卷

基金：

新加坡国家研究基金会;

关键词：

Biomass fractionation; Anaerobic digestion; Lignocellulosic biomass; Acclimatization; Microbial community dynamics; Acetoclastic methanogenesis; BIOGAS PRODUCTION; ANAEROBIC-DIGESTION; SOLID-STATE; BIOAUGMENTATION; SILVA; ACID;

D O I：

10.1016/j.biortech.2022.127602

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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.

引用

页数：9

共 42 条

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