Carbon nanomaterials induce residue degradation and increase methane production from livestock manure in an anaerobic digestion system

JOURNAL OF CLEANER PRODUCTION

卷:240

Article

Hao, Yi^1,3  Wang, Yaya^1,2  Ma, Chuanxin^3,4  White, Jason C.⁴  Zhao, Ziqian¹  Duan, Cheng¹  Zhang, Yiluo¹  Adeel, Muhammad¹  Rui, Yukui¹  Li, Guoxue¹  Xing, Baoshan³ 

[1] China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Beijing 100193, Peoples R China

[2] Hebei Agr Univ, Coll Mech & Elect Engn, Baoding 071000, Hebei, Peoples R China

[3] Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA

[4] Connecticut Agr Expt Stn, Dept Analyt Chem, New Haven, CT 06504 USA

关键词: Carbon-based nanomaterials;    Anaerobic digestion;    Methane production;    Sheep manure;    Microbial community;   

DOI  :  10.1016/j.jclepro.2019.118257

来源: Elsevier

【 摘 要 】

The present study investigated effects of two carbon-based nanomaterials, multiwall carbon nanotubes and fullerenes, on biogas and methane yield from sheep manure in an anaerobic digestion system over a 45 days period. The results show that the presence of 500 mg/kg multiwall carbon nanotubes or fullerenes increased the daily and accumulative production of methane (by approximately 46.8% and 33.6%), and decreased the total solid content (by approximately 12.8% and 10.4%) and pH. Exposure 50 mg/kg carbon-based nanomaterials had no impact on digestion. A high-throughput sequencing technique was used to analyze the microbial community diversity and composition in the digests across all treatments. The addition of 500 mg/kg fullerenes and multiwall carbon nanotubes notably altered the composition of the bacteria and archaea at the genus level. The change was particularly evident for Methanobacterium, whose relative abundance was significantly increased (by 67%, 53% and 120% upon with 50 mg/kg fullerenes, 50 and 500 mg/kg multiwall carbon nanotubes treatments, respectively), highlighting the positive effects of carbon-based nanomaterials on microorganisms and the subsequent acceleration of methane production. These findings provide important information on the potential use of carbon-based nanomaterials in methane production via altering or tuning the composition of the bacterial and archaeal communities and have relevance for exploring the use of carbon-based nanomaterials in clean energy and agricultural water recycling. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

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