The method of solid fermentation of biogas in Chinese rural areas

Conference · Thu Dec 01 00:00:00 EST 1983 · Alternative Energy Sources; (United States)

OSTI ID:6462095

Zou, Y; Zhao, Z

This report describes laboratory experimental results of solid method of biogas fermentation by using farm stalks and livestock manure as raw materials but without hydraulic pressure. Under natural conditions of ordinary temperature, the average rate of biogas production for 100 days has increased from 0.13 m/sup 3//m/sup 3/ of materials per day by using hydraulic pressure to 0.37 m/sup 3//m/sup 3/ of materials per day with dry method. The amount of gas produced per kg by the volatile solid material increases about 14% and there is little change in the methane content of the biogas. At present the biogas fermentation by means of hydraulic pressure in Chinese rural areas has certain special features, but there are disadvantages of low rate of biogas production and difficulty in filling and taking off materials. It requires about 100 dans (50 kg = 1 dan) of water to fill a digester. Hence a lot of labour is required. And, without stirring, it may easily result in separation of material and liquid in two layers and the formation of scum of the floating materials. It is thus unfavorable for microbial activities. According to our previous experiments and the reports of other workers, one of the important reasons for the low rate of biogas production is due to insufficient total solid (TS) content of the fermentation material. In this experiment, the authors used the method of solid fermentation instead of hydraulic pressure and obtained nearly double the rate of biogas production using smaller digesters which did not require as much labor to fill and remove materials.

• Research Organization: Shandong Energy Inst., Jinan
• OSTI ID: 6462095
• Report Number(s): CONF-831205-
• Journal Information: Alternative Energy Sources; (United States), Conference: 6. Miami international conference on alternative energy sources, Miami Beach, FL, USA, 12 Dec 1983
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
09 BIOMASS FUELS
AGRICULTURAL WASTES
ANAEROBIC DIGESTION
BIOLOGICAL WASTES
METHANE
PRODUCTION
BENCH-SCALE EXPERIMENTS
CHINA
FUEL GAS
RURAL AREAS
WASTE PROCESSING
ALKANES
ASIA
BIOCONVERSION
BIOLOGICAL MATERIALS
DIGESTION
FLUIDS
FUELS
GAS FUELS
GASES
HYDROCARBONS
MANAGEMENT
MATERIALS
ORGANIC COMPOUNDS
ORGANIC WASTES
PROCESSING
WASTE MANAGEMENT
WASTES
320604* - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)
090122 - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)