Influence of carbon type and carbon to nitrogen ratio on the biochemical methane potential, pH, and ammonia nitrogen in anaerobic digestion
Organic waste used as a feedstock in the anaerobic digestion (AD), it includes carbon and nitrogen. Carbon and nitrogen have an effect on the various digestive characteristics during AD, however, the study is rare about those of the interac...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Society of Animal Sciences and Technology
2020-01-01
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| Series: | Journal of Animal Science and Technology |
| Subjects: | |
| Online Access: | http://www.ejast.org/archive/view_article?pid=jast-62-1-74 |
| Summary: | Organic waste used as a feedstock in the anaerobic digestion (AD), it includes
carbon and nitrogen. Carbon and nitrogen have an effect on the various digestive
characteristics during AD, however, the study is rare about those of the
interaction. This study investigates the influence of carbon type and carbon to
nitrogens (C/N ratios) on the AD characteristics of organic waste. Experimental
treatments involved a combination of three carbon types with three C/N ratios.
The AD tests were carried out using a 125-mL serum bottle at a constant
temperature of 37°C and moisture 95% for 18 days. Degradation pattern
shows the difference among three-carbon treatments, the starch group was faster
than other groups. Maximum methane production date was similar between starch
(9.96 ± 0.05 day) and xylan group (10.0 ± 0.52 day), those of the
cellulose group (14.6 ± 1.80 day) was slower than other groups
(p < 0.05). The lag phase was only affected by the
carbon type (p < 0.05). Ammonia nitrogen was mainly
affected by nitrogen concentration regardless of carbon type (p
< 0.05). This study showed that xylan is useful as feedstock in order to
decrease the lag phase, and it showed that ammonia was independently affected by
the nitrogen concentration. |
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| ISSN: | 2672-0191 2055-0391 |