International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:11, November, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(11): 3066-3075

Co-Digestion of Biofuel Deoiled Cakes with Different Combinations of Cow Dung for Biogas Production and Nutrient Rich Manure
Priyanka Prasad1*, Balakrishna Gowda1, B.S. Nalini2, G. Ashwini2, K.T. Prasanna1 and K. Rajesh Kumar1
1Department of Forestry and Environmental Sciences, University of Agricultural Sciences, Bengaluru- 580 065, Karnataka, India
2Department of Microbiology, University of Agricultural Sciences,Bengaluru- 560 065, Karnataka, India
*Corresponding author

Biogas is generated from the anaerobic-digestion of organic-wastes and is a rapidly emerging means for power generation. The seed-cake after oil extraction can serve as a good feedstock for the generation of biogas. This study presents summary of the results obtained in the anaerobic digestion of neem and pongamia deoiled-cakes with different proportions of cow-dung. The study revealed that the pH of cow-dung slurry at the beginning was 7.8; neem-cake, 5.0 and pongamia-cake, 5.8 suggesting significant differences in pH among the bio-gas substrates used. Two months after anaerobic-digestion, there was increase in pH with increase in the proportion of cow-dung and also increase in total-N and P in biogas spent slurry after anaerobic-digestion. There was no definite trend with reference to total-K. There was a decrease in total soluble solids (organic-matter), volatile solids, C/N-ratio and volatile fatty acids at the end of digestion. Significantly, very low C/N-ratio was recorded in treatments 4:1 cow-dung: neem-cake and 1:1 cow-dung: pongamia-cake (3.24) at the end of 60 days. The cumulative biogas for nine weeks was significant with cow-dung (15,755 cc) followed by 4:1 cow-dung: neem-cake. This suggests that oil-cakes can serve as good feed stocks for biogas production.

Keywords: Biogas, Anaerobic-digestion, Organic-matter and Volatile fatty acid.

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How to cite this article:

Priyanka Prasad, Balakrishna Gowda, B.S. Nalini, G. Ashwini, K.T. Prasanna and Rajesh Kumar, K. 2017. Co-Digestion of Biofuel Deoiled Cakes with Different Combinations of Cow Dung for Biogas Production and Nutrient Rich Manure.Int.J.Curr.Microbiol.App.Sci. 6(11): 3066-3075. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.