Increasing biogas yield of rural biogas digester by addition of NH/sub 4/HCO/sub 3/
By addition of 0.3% NH/sub 4/HCO/sub 3/ instead of animal manure into rural biogas digester in which the rotted rice straw was the major feedstock, the biogas yield doubled in comparison with the check digester (0.1 m/sup 3//m/sup 3//d) and the fertility of NH/sub 4/HCO/sub 3/ did not decrease because of biogas fermentation. Many digesters have been built in China. But, owing to the problems of improper management, unsuitable influent mixing, etc., neither digesters nor feedstock were fully utilized. In order to solve these problems, adding NH/sub 4/HCO/sub 3/ into digester instead of animal manure was tried. Its results showed that the suitable C/N ratio of influent mixing was obtained, the fertility of effluent went up, and biogas producing rate increased. The concentration of NH/sub 4/HCO/sub 3/ is 0.2-0.6%, but the optimal is 0.3%.
- Research Organization:
- Chengdu Institute of Biology Academia Sinica Chengdu, Sichuan
- OSTI ID:
- 6562954
- Report Number(s):
- CONF-831205-
- Journal Information:
- Alternative Energy Sources; (United States), Journal Name: Alternative Energy Sources; (United States); ISSN ALESD
- Country of Publication:
- United States
- Language:
- English
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ADDITIVES
AGRICULTURAL WASTES
ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
BIOGAS PROCESS
BIOREACTORS
CHEMICAL COMPOSITION
DIGESTION
ESTERS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
MANAGEMENT
MANURES
METHANE
MIXING
NITRIC ACID ESTERS
ORGANIC COMPOUNDS
ORGANIC WASTES
PROCESSING
PRODUCTION
QUANTITY RATIO
RURAL AREAS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES