Methane production through anaerobic co-digestion of sheep dung and waste paper
메타 데이터
바이오화학분류
바이오정밀화학
연료
논문
Methane production through anaerobic co-digestion of sheep dung and waste paper
학술지
Energy conversion and management
저자명
Li, Wanwu; Siddhu, Muhammad Abdul Hanan; Amin, Farrukh Raza; He, Yanfeng; Zhang, Ruihong; Liu, Guangqing; Chen, Chang
초록
<P><B>Abstract</B></P> <P>A large amount of sheep dung (SD) produced on farms in China is a potential feedstock for production of clean energy in the form of biogas. Similarly, waste paper can be a notable energy source that is worth exploiting. In this study, we assessed the feasibility of co-digesting nitrogen-rich SD with the carbon-rich corrugated board (CB) or waste office paper (OP) in varying volatile solids (VS) ratios, to produce methane. Synergistic effect of co-digesting SD with CB and SD with OP on methane production was found in this study. The highest methane yields of 151.62 and 198.85mL/g-VS were obtained during the co-digestions of SD with CB at 4:1 ratio (SDCB) and SD with OP at 2:3 ratio (SDOP), respectively. High-throughput 16S rRNA gene sequencing demonstrated that the microbial diversity and richness in SDCB and SDOP co-digests were higher than in SD and OP mono-digests, respectively. Characteristic bacteria and archaea in the digests were strongly substrate-related and might contribute to methane production. The validated results indicated that methane production through anaerobic co-digestion of SD and waste paper can be an efficient way that could not only reduce environmental pollution but also contribute to methane production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Synergistic effect on methane yield was found in the co-digestion of sheep dung and waste paper. </LI> <LI> Optimal substrate ratios were obtained in the co-digestion of sheep dung with waste paper. </LI> <LI> Characteristic bacteria and archaea in the digests were strongly substrate-related. </LI> <LI> Microbial structure composition in the co-digestion was improved compared to the mono-digestion. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>