Studies on the microbial spectrum in anaerobic biomethannization of cow dung in 10 m3 fixed dome biogas digester

International Journal of Physical Sciences

Eze J. I.¹ 

关键词: Biomethane;    anaerobic digestion;    innoculum;    digestate.;   

DOI  :  

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

This study investigates the generation of biogas from cow dung using a constructed 10 m3family-size digester at the National Center for Energy Research and Development, University of Nigeria, Nsukka. The cow dung was procured from Nsukka main market central abattoir. Production of biogas was monitored over a period of 20 days. Standard methods were used to determine pH, temperature, total viable counts, total solid, volatile solid, mould count, coliform count, ash content and moisture content of the digesting mixture. Results showed that cow dung commenced flammable gas production on the 2ndday after charging the digester. Optimum gas production was recorded on the 7thday. As digestion proceeded, pH increased to a maximum of 7.8 on the 7thand 8thday. Total viable counts increased by over 307%, while total solids and volatile solids decreased to 36.9 and 49.2% respectively. Result also showed that the waste produced maximum biogas within the optimum temperature range of 35 - 42oC but at different periods. The biogas generated sustained cooking of three different foods daily for two weeks without exhausting.

【 授权许可】

CC BY