OPTIMIZATION OF BIOGAS YIELD FROM CO-DIGESTION OF SAWDUST AND COW DUNG UNDER ANAEROBIC CONDITION USING CHINESE FIXED DOME BIOREACTOR (CFDB).

Ukonu, C.U and Makanjuola, J.O. (2019) OPTIMIZATION OF BIOGAS YIELD FROM CO-DIGESTION OF SAWDUST AND COW DUNG UNDER ANAEROBIC CONDITION USING CHINESE FIXED DOME BIOREACTOR (CFDB). FEPI-JOPAS, 1 (1). pp. 45-51. ISSN 2714-2531

Text FEPI-JOPAS 7 Makanjuola J. O Journals 6.pdf Download (185kB)

Abstract

The co-digestion of sawdust with cow dung was understudied to investigate the optimum biogas yield and the best ratio for optimum production by varying the organic loading rate (OLR) of the biomass with constant water ratio. Five (5), fifty kilogram capacity prototype of Chinese fixed dome bioreactors (CFDB), labeled bioreactor 1-5 was charged with the organic loading rate ratio of (1:0:4), (0:1:4), (3:2:4), (2:3:4) and (1:1:4) of cow dung: sawdust: water respectively into the bioreactors. The pH, temperature and daily biogas production of the bioreactor operating conditions were monitored over the hydraulic retention time (HRT) for 33 days. The result showed that at the end of the 33 days, bioreactor 5 (1:1:4) had the highest cumulative biogas yield of 36.3 L/TS, followed by bioreactor 3(3:2:4) with a good cumulative biogas yield of 35.5L/TS, compared with bioreactos1 and 2 which serve as control. The time lag (the onset of flammability) of bioreactor 3 (3:2:4) and bioreactor 1(1:0:4) was 13 day shorter than that of bioreactor 5 (1:1:4) which was 15 day and bioreactors 2 and 4. The result obtained implies that bioreactor 5(1:1:4) (3.8kg CD and 3.8kg of SD) is a better ration for optimum biogas yield. This also showed that the blending of sawdust with cow dung optimized the biogas yield and the time lag when compared with the control bioreactor 2 (0:1:4) which is only sawdust with the biogas yield of 8.5L/TS and a time lag of 23 day and bioreactor 1 (1:0:4) having only cow dung and a biogas yield of 19.5 L/TS.

Item Type:	Article
Subjects:	Q Science > Q Science (General) Q Science > QD Chemistry Q Science > QR Microbiology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Mr Taiwo Egbeyemi
Date Deposited:	11 May 2020 18:44
Last Modified:	11 May 2020 18:44
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/57

Actions (login required)

View Item