COMPOSITIONAL ANALYSIS OF BIOGAS PRODUCED FROM FAECAL SLUDGE CO-DIGESTED WITH ORGANIC FEEDSTOCKS

Authors

  • A.A. Soyingbe
  • O Olayinka
  • O Bamgbose
  • M.T Adetunji

Abstract

The objective of this study was to determine the composition and cooking of biogas generated from faecal sludge co-digested with three organic feedstock materials. The feedstock materials (cow dung, cow intestinal waste and mixed organic waste) were fed into the digester to mix with faecal sludge for biogas production. Temperature and pH of the digester contents during decomposition were taken at four days interval. The biogas produced was analyzed using  multi-gas analyzer to determine the concentrations of CO, CO2, CH4 and H2S  while the efficiency of the biogas produced was determined by comparing the  cooking time of a 200 g of  rice using kerosene, Liquid petroleum gas (LPG) and biogas produced simultaneously and the time taken recorded accordingly. The result of the ANOVA showed that feedstock materials had significant (P<0.05) effect on the temperature and pH. Population distribution of the microflora showed aerobic and anaerobic bacteria (Bacillus spp, Clostridium spp, klebsiellaspp) and a methanogen of the genera methanococcus. Methane formed major component of the biogas produced by all the substrates (40-70%) followed by carbon dioxide (20-30%) and H2S (8- 10%). The result of comparison of cooking time (minutes) was in the order of kerosene (40.00 min+1.00) > liquefied petroleum gas (27.33 min+0.58) > biogas (25.67 min+0.58). The study showed that faecal sludge co-digested with Cow dung, Cow Intestinal Waste and Mixed organic waste demonstrated a potential for biogas generation. Keywords: Biogas, Faecal-sludge, Kerosene, Micro-flora, Anaerobic bacteria.

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Published

2019-09-01

How to Cite

Soyingbe, A., Olayinka, O., Bamgbose, O., & Adetunji, M. (2019). COMPOSITIONAL ANALYSIS OF BIOGAS PRODUCED FROM FAECAL SLUDGE CO-DIGESTED WITH ORGANIC FEEDSTOCKS. Journal of Chemical Society of Nigeria, 44(5). Retrieved from http://journals.chemsociety.org.ng/index.php/jcsn/article/view/355

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