effect of cow dung variety on biogas production
TRANSCRIPT
![Page 1: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/1.jpg)
![Page 2: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/2.jpg)
EFFECT OF COW DUNG VARIETY ON BIOGAS PRODUCTION.
PRESENTED BY MR.PAWAR PRASANNA PRATAP
2012AE/46BCOLLEGE OF AGRICULTURAL
ENGINEERING AND TECHNOLOGY, V.N.M.K.V. PARBHANI
SEMINAR ON
![Page 3: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/3.jpg)
INTRODUCTION
Biogas is a renewable, alternative and sustainable form of energy.
Biogas as an energy source can be converted to benefit domestically and to power our industries .
This topic is carried out with the purpose of discovering which breed of cows is most effective for biogas generation, particularly in the West-African sub-region.
![Page 4: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/4.jpg)
BIOGAS
• Biogas is clean environment friendly fuel that can be obtained by anaerobic digestion of animal residues and domestic and farm wastes.
• Biogas generally comprise of 55-65 % methane, 35-45 % carbon dioxide, 0.5-1.0 % hydrogen sulfide and traces of water vapor.
• Average calorific value of biogas is 20 MJ/m3 (4713 kcal/m3).
![Page 5: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/5.jpg)
5
WHAT IS ANAEROBIC DIGESTION?
Anaerobic digestion occurs when organic material decomposes biologically in the absence of oxygen
![Page 6: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/6.jpg)
6
Benefits of Anaerobic Digestion
Odour reduction.
Digested manure retains most of its nutrient/fertilizer value.
Digestion minimizes release of methane to atmosphere during later storage.
![Page 7: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/7.jpg)
7
CONSTITUNTS
1- CH4 - 55-65%
2- Co2 - 35-45%
3- N2 - 0.8%
4- H2 - 0.7%
5- CO - 0.2%6- O2 - 0.1%
7- H2S - 0.2%
![Page 8: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/8.jpg)
ENERGY POTENTIAL OF NIGERIA (BIO-FUEL) :-
The reserves for animal waste is as at 2005 was estimated to be 61.00 million tonnes/ yr.
Crop residue was put at 83.00 million tonnes/yr. 50 and 400 MW of electricity is targeted to be generated
from biomass by 2015 and 2025 respectively. Nigeria is tremendously blessed with a variety of energy
resources (both conventional and non-conventional).
![Page 9: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/9.jpg)
BIOGAS GENERATATION DEPENDS ON
The nature and concentration of the substrate,
Feed rate,
pH value,
Bacterial population,
Temperature, and
Chemical inducers.
![Page 10: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/10.jpg)
Materials and methods :- Samples of cow dung (2 kg) were obtained from the Jersey cows,
Holstein Friesian cows, White Fulani cow and Simmental cows
respectively.
The cows were all fed in equal proportion and at the same time
before the samples were collected, with di-calcium, Soya meal,
wheat offal, cotton seed, and cotton husk.
The 263-50 Gas Chromatograph, D2500 Chromato-Integrator and
Gas Sampler were used for the collection and analysis of the biogas
samples collected from the bio-reactor.
Cow were not treated with antibiotics within the weeks prior to
samples gathering.
![Page 11: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/11.jpg)
The gas sample was introduced into the 263-50 Gas-Chromatograph which was connected to a D2500 Chromato-Integrator and charged for a period of 13 min.
The results were plotted on graph by the D2500 Chromato-
Integrator and summary given within 13 min by the Integrator.
The results indicate the presence of Air (Oxygen and Nitrogen), CH4, CO, N, CO2 and traces of other gases.
![Page 12: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/12.jpg)
Detailed Structural Design Of Fixed Dome Biogas Plant
![Page 13: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/13.jpg)
Biogas Plant Design
Floating Drum
Fixed Dome
![Page 14: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/14.jpg)
Out let Pipe
In let Pipe
Digester
Drum
FLOATING DRUM TYPE BIOGAS PLANT
Gas outletInlet
Outlet
![Page 15: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/15.jpg)
Biogas Plant
![Page 16: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/16.jpg)
BIOGAS FLAME
![Page 17: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/17.jpg)
Biogas Lamp For Lighting
![Page 18: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/18.jpg)
18
ENVIRONMENTAL BENEFITS
Reduces odor from land application
Protects water resources
Reduces pathogens
Weed seed reduction
Fly control after digestion
Greenhouse gas reduction
![Page 19: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/19.jpg)
Composition of biogas matter
Chemical
formula
White Fulani (%)
Holstein (%)
Jersey (%)
Simmental (%)
Methane CH₄ 85.33 84.916 69.223 60.459
Carbon dioxide
CO₂ 13.011 14.89 22.991 27.991
Nitrogen N₂ 1.596 0.177 7.8 11.484
Carbon monoxide
CO 0.13 0.001 0.001 0.021
Air - 0.048 0.01 0.055 0.045
Total - 100.00 100.00 100.00 100.00
Result and discussion:-
Table.1 Moles percentages and composition of biogas for Jersey, Simmental, Holstein and White Fulani cows.
![Page 20: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/20.jpg)
S/No. Cow species
Percentage methane
Calorific value (Cal/m3)
1 White Fulani 85.331 197.157
2 Holstein Friesian
84.916 196.199
3 Jersey 69.233 159.963
4 Simmental 60.459 149.235
Calorific values of biogas obtained from cows
Table 2. Calorific values of biogas obtained from Jersey, Simmental, Holstein and the white Fulani cows.
![Page 21: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/21.jpg)
Conclusions :- The White Fulani, a predominant variety in Nigeria and the West-
African sub-region content the highest percentage of biogas. The methods and materials used prove that the white Fulani has the
highest percentage of bio-energy as compare to other breeds
studied. Socio-economical can be solved by the abundance of this local
breed of cows. The government and private sector need to mobilize energy
resources in cow dung, particularly the White Fulani and other
wastes to ensure energy is provided to Nigerians.
![Page 22: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/22.jpg)
Analysis of cow dung produced fromWhite Fulani, Holstein, Jersey and Simmental :-
Fig . Analysis of cow dung produced from White Fulani, Holstein, Jersey and Simmental.
![Page 23: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/23.jpg)
Energy generated from cow dung :
![Page 24: Effect of cow dung variety on biogas production](https://reader035.vdocument.in/reader035/viewer/2022062903/58b89bd81a28ab3e3a8b78fd/html5/thumbnails/24.jpg)
THANK YOU