Revealing mechanism of micro-aeration for enhancing volatile fatty acids production from swine manure

被引：6

作者：

Cao, Qitao ^{[1
]}

Zhang, Wanqin ^{[1
]}

Lian, Tianjing ^{[1
,2
]}

Wang, Shunli ^{[1
]}

Yin, Fubin ^{[1
]}

Zhou, Tanlong ^{[1
]}

Wei, Xiaoman ^{[1
]}

Dong, Hongmin ^{[1
]}

机构：

[1] Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

[2] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 365卷

关键词：

Bio-fermentation; Micro -oxygen environment; Agricultural waste; Acid production; Carbon mass balance; Microbial communities; ANAEROBIC CO-DIGESTION; HYDROLYSIS ACIDIFICATION; OXIDATIVE STRESS; BROWN WATER; METHANOSARCINA; MICROAERATION; PRETREATMENT; KINETICS;

D O I：

10.1016/j.biortech.2022.128140

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Micro-aeration is considered a new strategy for improving volatile fatty acids (VFAs) production of agricultural waste. This study investigated the effect and mechanism of micro-aeration of air and oxygen (O2) on VFAs production from swine manure. The results showed that Air-micro-aeration had the most significant improve-ment effect, with the highest VFAs of 8.21 g/L, which was increased by 22.4%. Moreover, the mixing effects of different micro-aeration were limited, and the microbial communities significantly varied. Firmicutes and Bac-teroidota were the dominant hydrolytic and acidogenic bacteria, and Air-micro-aeration preferentially promoted electron transfer activity and energy generation. Methanosarcina, Methanocorpusculum, and Methanobrevibacter can adapt to environmental changes according to their different oxygen tolerance, and the consumption and conversion of VFAs by methanogens were slow under Air-micro-aeration condition. This study revealed mech-anism of micro-aeration for improving VFAs production from swine manure, providing a theoretical basis for micro-aeration regulation optimization.

引用

页数：10

共 44 条

[1] Methanogenesis in oxygenated soils is a substantial fraction of wetland methane emissions [J].

Angle, Jordan C. ;

Morin, Timothy H. ;

Solden, Lindsey M. ;

Narrowe, Adrienne B. ;

Smith, Garrett J. ;

Borton, Mikayla A. ;

Rey-Sanchez, Camilo ;

Daly, Rebecca A. ;

Mirfenderesgi, Golnazalsdat ;

Hoyt, David W. ;

Riley, William J. ;

Miller, Christopher S. ;

Bohrer, Gil ;

Wrighton, Kelly C. .

NATURE COMMUNICATIONS, 2017, 8

[2]

APHA, 2005, Standard methods for the examination of water and wastewater, V21

[3] Oxygen Effects in Anaerobic Digestion [J].

Botheju, Deshai ;

Lie, Bernt ;

Bakke, Rune .

MODELING IDENTIFICATION AND CONTROL, 2009, 30 (04) :191-201

[4] Aerotolerance of strictly anaerobic microorganisms and factors of defense against oxidative stress: A review [J].

Brioukhanov, A. L. ;

Netrusov, A. I. .

APPLIED BIOCHEMISTRY AND MICROBIOLOGY, 2007, 43 (06) :567-582

[5] The catalase and superoxide dismutase genes are transcriptionally up-regulated upon oxidative stress in the strictly anaerobic archaeon Methanosarcina barkeri [J].

Brioukhanov, Andrei L. ;

Netrusov, Alexander I. ;

Eggen, Rik I. L. .

MICROBIOLOGY-SGM, 2006, 152 :1671-1677

[6] Roles of micro-aeration on enhancing volatile fatty acids and lactic acid production from agricultural wastes [J].

Cao, Qitao ;

Zhang, Wanqin ;

Lian, Tianjing ;

Wang, Shunli ;

Yin, Fubin ;

Zhou, Tanlong ;

Zhang, Haiyan ;

Zhu, Jun ;

Dong, Hongmin .

BIORESOURCE TECHNOLOGY, 2022, 347

[7] Short chain carboxylic acids production and dynamicity of microbial communities from co-digestion of swine manure and corn silage [J].

Cao, Qitao ;

Zhang, Wanqin ;

Lian, Tianjing ;

Wang, Shunli ;

Dong, Hongmin .

BIORESOURCE TECHNOLOGY, 2021, 320

[8] Zooming in on Butyrate-Producing Clostridial Consortia in the Fermented Grains of Baijiu via Gene Sequence-Guided Microbial Isolation [J].

Chai, Li-Juan ;

Lu, Zhen-Ming ;

Zhang, Xiao-Juan ;

Ma, Jian ;

Xu, Peng-Xiang ;

Qian, Wei ;

Xiao, Chen ;

Wang, Song-Tao ;

Shen, Cai-Hong ;

Shi, Jin-Song ;

Xu, Zheng-Hong .

FRONTIERS IN MICROBIOLOGY, 2019, 10

[9] Profiling the Clostridia with butyrate-producing potential in the mud of Chinese liquor fermentation cellar [J].

Chai, Li-Juan ;

Xu, Peng-Xiang ;

Qian, Wei ;

Zhang, Xiao-Juan ;

Ma, Jian ;

Lu, Zhen-Ming ;

Wang, Song-Tao ;

Shen, Cai-Hong ;

Shi, Jin-Song ;

Xu, Zheng-Hong .

INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 2019, 297 :41-50

[10] Review on microaeration-based anaerobic digestion: State of the art, challenges, and prospectives [J].

Chen, Qing ;

Wu, Wanqing ;

Qi, Dacheng ;

Ding, Yihong ;

Zhao, Zihao .

SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 710

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