Donkey Dung and Swine Dung (original) (raw)
Related papers
Comparative Study of Biogas Production from Anaerobic Co-digestion of Donkey Dung and Swine Dung
Production of sufficient sustainable sources of energy, mitigation of green house gas emissions amongst others are the aspiring goals that have led in developing technologies to produce more energy from renewable sources. This study investigated the potentials of an alternative fuel sources for biogas production, it was carried out using donkey dung and swine dung as substrates, further co-digestion of both donkey dung and swine dung was done to differentiate between independent and co-digestion of substrates. Digesters were used to digest swine dung and donkey dung respectively as single substrates as well as to co-digest swine dung and donkey dung. The operating conditions here are pH value 7.2, Temperature 32°C and retention time of 68 days. Effect of seeding with bacteria increases the rate of production and mixing is an essential part that also aids the production of biogas. This work presents the design and construction of biogas digester to treat 500g of swine dung and donkey dung. The digester is capable of producing 0.007m at average working temperature of 32°C. Digester D produces higher volume of biogas. Therefore, from the values of the physic-chemical properties with the sufficient carbon obtained, it will increase the sufficient effective biogas production as an alternative source of energy.
Journal of Advances in Biology & Biotechnology
Aims: This study was carried out by analyzing the quantitative and qualitative of the biogas produced from cow dung by degrading mechanism. 32L of bioreactors was used for the study. Methodology: The bioreactors were constructed to imitate the fixed batch prototype. The study lasted for 30 days and it was carried out at the National Centre for Energy Research and Development, University of Nigeria,Nsukka. Slurry was prepared in bioreactors. The substrates in the bioreactors were water and cow dung (intestinal and abdominal waste). The pH, the total solids (TS), volatile solids (VS) and total volatile fatty acid (VFA) characteristics of the substrate before and after digestion were determined using standard method. Quantitative and qualitative analysis of biogas production was by liquid displacement and gas Analyzer methods Results: The results of the TS, VS and VFA were 400 mg/l, 92mg/l and 16.7 mg/l respectively in the predigested samples and 92 mg/l, 17.4mg/l and 28.3mg/l respecti...
Experimental Study of Biogas Production from Cow Dung as an Alternative for Fossil Fuels
Journal of Sustainable Bioenergy Systems, 2019
To treat the problem of fossil fuel usage and greenhouse gas emissions, biogas is considered a potential source of clean renewable energy. The aim of the work is to analyze the amount of biogas and ph from cow dung when an anaerobic digester operates in the mesophilic mode. In this study is presented the experimental investigation of biogas production from cow dung as an alternative energy resource. This is work using an 18 Liters capacity plastic as prototype biogas plant, plant to inspect the anaerobic digestion in producing biogas. The digester was batch operated and daily gas produced from the plant was observed for 30 days. The digester was fed within the ratio of 1:1 of dung to water respectively. The operating temperatures of the digester were maintained within mesophilic conditions. The Biogas production from cow dung fluctuates from the first day to the thirtieth day between 0 and 340 ml. The pH of cow dung is gradual reduction within the retention period.
2021
There is growing public concern over potential impact on environmental quality caused by animal wastes. Anaerobic digestion, a biological conversion process can be used to obtain energy from biologicall wastes. This study explored the production of biogas from co-digestion of fonio hus and donkey dung using anaerobic biological conversion. The digesters were labeled as; digester A-Fonio husk only, digester B-donkey dung only, digester C-Fonio husk (300g) and Donkey Dung (200g), digester D-Fonio husk (200g) and donkey dung (300g). Proximate analysis of the substrates before and after digestion were determined such as total solids (TS), volatile solid, carbon content, nitrogen content, ash content, etc., and pH before and after digestion process. The biogas produced during this period was collected by water displacement method and subsequently measured. The results showed that Fonio husk in bio-digesters A and B gave a cumulative average biogas volume of 4972 ml and 5222 ml (week 3) while pig dung in bio-digesters C and D gave a cumulative average biogas volume of 5564 ml and 5978 respectively (week 3) within three weeks of fermentation. The digester is capable of producing 0.007m at average working temperature of 320C. Digester D produces higher volume of biogas as a result of improved nutrient provide by donkey dung as shown in the results obtained from the proximate analysis and has the best neutral pH, there was a reduction in the startup time.
Cow Dung and Kitchen Waste as Economical Source of Biogas: Production and Analysis
Communication in Physical Sciences, 7(3) :174-181, 2021
The production of biogas by co-digestion of cow dung and kitchen wastes were facilitated in this work. Locally source 20 litres digester and gas collection systems were prepared. The feed materials were collected locally, pre-fermented, digested and analysed. Purification of the produced biogas was carried out by passing the gas through three chambers containing 40% KOH, CaO.activated charcoal and silica gel/activated charcoal respectively. The flame of the combusting purified biogas was observed to be more intense than that of the freshly produced impure biogas both in colour and height. The study confirmed that biogas can easily be generated and purified using locally and cheaply available raw materials.
Comparative Studies on Biogas Production using Six Different Animal Dungs
Journal of Biology Agriculture and Healthcare, 2013
This study was carried out to compare the rate of and amount of gas produced from six different animals' dung under anaerobic conditions. 50 grammes dry weight of each animals dung was weighed out in duplicates digested under anaerobic conditions in the laboratory, sheep dung was found to produce the greatest amount of gas (1.15 litres) followed by chicken, pig, goats, cow and horse dung respectively which had total gas production records as 0.65 litre, 0.45 litre, 0.17 litre & 0.03 litre respectively.
preparation of biogas from animal dung
The co-digestion of cow dung with rice husk for biogas production at laboratory scale was the subject of this investigation. The study was carried out at room temperature that is, 26 -29°C for a period of 52 days with a total solid concentration of 8% in each sample (fermentation slurry). The biogas produced was collected by water displacement method which was subsequently measured. Sample A (50 wt % cow dung, 50 wt % rice husk) showed a cumulative biogas production of 161.5 ml at the end of the 38 th day of the experiment after which there was no further production. The production from sample B (25 wt % cow dung, 75 wt % rice husk) was not significant, while there was no production from sample C(0 wt % cow dung, 100 wt % rice husk).
Turning Animal Dung to Biogas for Energy and Safe Environment
A comparative study of the cumulative yields and physical properties of biogas from goat and sheep dung was carried out in the Department of Pure and Industrial Chemistry Laboratory, Nnamdi Azikiwe University Awka, in September 2006. Biogas production from both samples started on Day 3 of the experiment and stopped on Day 13 (goat dung) and Day 14 (sheep dung). Total biogas production from equivalent weights of goat and sheep dung samples under the same micro-digester conditions were 155 and 115mls respectively, with goat and sheep dung accounting for about 57.41 and 42.59% of the total 270mls of biogas generated. High values of moisture content (52.5 -69.5%) was recorded for the two wet dung samples, but sheep dung contained more total solid (47.5-50%) than goat dung slurry (30.5%). There was a higher volatile matter in undigested goat dung (60%) over sheep dung (40%) indicating that less biogas was produced by sheep dung. Ash content of 65-70% was recorded with both dung samples, which is a positive indication that these organic materials are valuable substrata for bio-fertilizer. The sludge from the digester could also be applied to the soil to increase its moisture content; pathogenic organisms having been inactivated during the gasification process. Moreover cooking by biogas is much cleaner than cooking over fossil fuel while burning biogas converts methane into carbon dioxide thereby significantly reducing the environmental impact of methane regarding greenhouse effect and global warming.
Analysis of biogas production through anaerobics digestion using cow dung and various co-substrates
Thermal Science, 2016
Biodegradable waste is a sustainable energy resource. In coming years biogas technology can be very useful worldwide, since biogas can be obtained from biodegradable waste material. This technology is based on waste reduction and also is helpful in the clean-up process of India. In this experiment, we have made single-phase biogas setups by using two-liter bottles. The fermentation time of the anaerobic digestion for the efficient use of gas as a fuel is about sixteen days. In our biogas digester setups for waste decomposion anaerobic co-digestion process is utilized. The primary feed stock is cow dung, whereas the grass, fruit, and vegetable waste are used as co-subtracts. The pH value was maintained at the range level of 6.5 to 6.9. The output biogas yield was 1.59 ml, 1.28 ml, 1.03 ml, and 0.95 ml, within an approximate period of sixteen days. Biogas obtained from cow dung and grass waste is almost identical as biogas obtained from the experimental setup 1 (pure cow dung). Main performance characteristics of biogas formation were presented in this paper. In order to analyze a daily biogas formation, the pH value, temperature, and hydraulic retention time were changed in this experiment.
PRODUCTION OF BIOGAS FROM COW AND ELEPHANT DUNG
Production of biogas from Cow dung and Elephant dung were carried out in this study. Three samples tagged: A (100% Cow dung), B (50% Cow dung and 50% Elephant dung) and C (100% Elephant dung) were investigated in prototype batch bio-digesters using anaerobic digestion process. The produced biogas in each case was refined by passing it through the solutions of KOH and KMnO4 to reduce the associated carbon dioxide (CO2) and hydrogen sulphite (H2S) contents and then passed through CaCl2 to dry the gas in effort to improve its burning efficiencies. The production was carried out in improvised cylindrical bio-digesters of dimension 37 cm diameter and 30 cm in height. Results obtained revealed that 'Sample B', the co-digestion of Cow and Elephant dung gave the best result with cumulative biogas volume of 288.2 cm 3 over a period of 33 days. The cumulative volumes of biogas produced over the same period by Samples A and C are 207.2 and 238.2 cm 3 respectively. Therefore, the co-digestion of Elephant and Cow dung in equal proportion can be used to alleviate the shortage of gas supply in Nigeria.