Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7068438 | Bioresource Technology | 2018 | 40 Pages |
Abstract
This study investigated the effect of the feedstock-to-inoculum (F/I) ratio on performance of the solid-state anaerobic co-digestion of pig urine and rice straw inoculated with a solid digestate, and clarified the microbial community succession. A 44-day biochemical methane potential test at F/I ratios of 0.5, 1, 2 and 3 at 55â¯Â°C and a 35-day large-scale batch test at F/I ratios of 0.5 and 3 at 55â¯Â°C were conducted to investigate the effects of F/I ratio on anaerobic digestibility and analyze microbial community succession, respectively. The highest cumulative methane yield was 353.7â¯m3/t VS in the large-scale batch test. Volatile fatty acids did not accumulate at any F/I ratios. The volatile solids reduction rate was highest at a F/I ratio of 0.5. Microbial community structures were similar between F/I ratios of 3 and 0.5, despite differences in digestion performance, suggesting that stable operation can be achieved at these ratios.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Lingyu Meng, Li Xie, Co Thi Kinh, Toshikazu Suenaga, Tomoyuki Hori, Shohei Riya, Akihiko Terada, Masaaki Hosomi,