Journal
BIORESOURCE TECHNOLOGY
Volume 269, Issue -, Pages 426-433Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.08.001
Keywords
Swine slaughterhouse waste; Anaerobic digestion; Long-chain fatty acids; Predominant microorganisms
Funding
- National Key Research & Development Program of China [2018YFD0800103]
Ask authors/readers for more resources
This study investigated methane production, long-chain fatty acids (LCFAs) profile, and predominant microorganisms in anaerobic digestion (AD) of lipid-rich swine slaughterhouse waste (SSW). The maximum methane yield was 999.2 mL/g VS. LCFAs, as inhibitory hydrolysis products, accumulated first to 1165 mg/L on day 3, and then decreased sharply to 125.7 mg/L on day 9, and finally were degraded to 20 mg/L on day 27. Linoleic acid (C18:2), oleic acid (C18:1) and palmitic acid (C16:0) were the dominant LCFAs. The easy conversion of C18:1 to C16:0 compared with difficult degradation of C16: 0 resulted in an increase of C16: 0 on day 4-6. Predominant microorganisms were Clostridium, Syntrophomonas and Methanospirillum. This study proved the high methane potential of lipid-rich SSW and gained insights into the degradation process by analysis of intermediates of LCFAs and predominant microorganisms. The results can provide valuable guidance for efficient utilization of this waste to produce methane in future.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available