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Опубликовано
2015-02-19
Опубликовано на SciPeople2016-03-04 20:38:42
ЖурналScientific Works of National University of Food Technologies
Semicontinuous methane fermentation of chicken manure in thermophilic mode
Аннотация
The paper presents the results of studies on methane fermentation of chicken manure. The study was conducted in a reactor with effective volume of 3 liters, working in semicontinuous mode. Hydraulic retention time was 10 days, and total solids content of substrate — 10 %. The temperature was maintained at 50 °C. The content of the reactor was mixed with a mechanical stirrer with rotation frequency 38.4 rpm. for 15 minutes every hour. Methane fermentation took place with an average pH of 8.1, the concentration of ammonium nitrogen — 3880 mg/l and free ammonia — 1035 mg/l. As a result of microbial community adaptation to high concentration of ammonia nitrogen, the production of 2.62 l/l (262 ml/g TS) biogas with methane content of 58 % was achieved.