Comparative Study of Biogas Production from Five Substrates

2007 ◽  
Vol 18-19 ◽  
pp. 519-525 ◽  
Author(s):  
S.J. Ojolo ◽  
R.R. Dinrifo ◽  
K.B. Adesuyi
Keyword(s):  
Comparative Study ◽  
Biogas Production ◽  
Operating Conditions ◽  
Cattle Dung ◽  
Cow Dung ◽  
Vegetable Waste ◽  
Water Displacement ◽  
Kitchen Waste ◽  
Fruit Waste ◽  
Poultry Droppings

In this work, a comparative study of biogas production from poultry droppings, cattle dung, kitchen waste, fruit waste and vegetable waste was done under the same operating conditions. 3kg of each waste was mixed with 9kg of water and loaded into the 5 constructed digesters. Biogas production was measured using water displacement method for a period of 40 days and at an average temperature of 30.5oC. Results indicated that poultry droppings produced 0.0332dm3/day, cow dung produced 0.0238dm3/day, Kitchen waste produced 0.0080dm3/day, vegetable waste produced 0.0066dm3/day and fruit waste with 0.0022dm3/day. It is concluded that poultry droppings produced more biogas because it contains more nutrients and nitrogen compared with plant and other animal waste

Comparative Analysis of a Locally Developed Biogas Digester Using Selected Substrates

2016 ◽  
Author(s):  
Kevin N. Nwaigwe ◽  
Christopher C. Enweremadu
Keyword(s):  
Comparative Analysis ◽  
Retention Time ◽  
Large Scale ◽  
Biogas Production ◽  
Gas Production ◽  
Operating Conditions ◽  
Cow Dung ◽  
Vegetable Waste ◽  
Cumulative Yield ◽  
Biogas Yield

A work on the comparative analysis of selected substrates for biogas production using a developed digester is presented. The substrates utilized include cow dung and vegetable waste. The developed digester has 60 litres of substrate volume, incorporates ease of stirring the slurry and mobility of the digester within the farm. The digester was charged with cow dung and vegetable waste respectively with water in a ratio 1:2 at a mesophilic temperature range (20°C – 45 °C) for thirty days retention time and comparative yield within the same operating conditions was studied. The results obtained from the gas production showed that cow dung produced a cumulative biogas yield of 0.702 litres while vegetable waste produced a cumulative yield of 0.144 litres. This result showed that these wastes could be a source of renewable gas if operated on a large scale, while simultaneously reducing environmental pollution particularly within a farm. Also, the results highlight the selection options available to a rural farmer in terms of yield.

COMPARATIVE STUDY OF ELECTROLYSIS-ENHANCED ANAEROBIC DIGESTION OF THREE SOLUBLE SOLID WASTES FOR BIOGAS PRODUCTION

2020 ◽  
Vol 4 (1) ◽  
pp. 11
Author(s):  
Adewumi A ◽  
Lasisi K H ◽  
Akinmusere O K ◽  
Ojo A O ◽  
Babatola J O
Keyword(s):  
Comparative Study ◽  
Biogas Production ◽  
Solid Wastes ◽  
Cow Dung ◽  
Anaerobic Conditions ◽  
Volume Percentage ◽  
Maximum Value ◽  
Cumulative Volume ◽  
Soluble Solid ◽  
Poultry Droppings

<p><strong>Aim</strong>: A comparative study of biogas production from three soluble solid wastes was conducted under anaerobic conditions by subjecting each waste to both conventional and electrolyzed digesters. <strong>Methodology and Results</strong>: Varying weight of each of the waste was mixed thoroughly with water and fed into five digesters. Three of these digesters were electrolytically-enhanced while the other two were not. The digestion of each of the wastes was monitored for 40 days at an ambient temperature ranging from 24 to 35oC. In all the digesters, biogas production started on the day 2, and attained maximum value on day 14 to17. Biogas production ended on the day 34 and 35 in digester 1a, 1b, 2a and 2b with production ending earliest in digester 3 containing wastewater on day 19. The highest biogas was produced in digester 2b containing electrolyzed digester loaded with poultry droppings) with a cumulative volume percentage of 91.41 as compared to its conventional state with a cumulative volume percentage of 85.19 and both states of the cow dung waste with cumulative volume percentages of 77.26 and 71.64 respectively. The least production occurred in digester 3 with a cumulative volume percentage of 4.59. <strong>Conclusion, significance and impact study</strong>: It is therefore concluded that poultry droppings has the greatest potentials for the generation of biogas as compared to cow dung in conventional and electrolyzed state and wastewater.</p>

scholarly journals Biogas Production from the Co-Digestion of Cornstalks with Cow Dung and Poultry Droppings

2019 ◽  
Vol 08 (03) ◽  
pp. 145-154
Author(s):  
I. J. Ona ◽  
S. M. Loya ◽  
H. O. Agogo ◽  
M. S. Iorungwa ◽  
R. Ogah
Keyword(s):  
Biogas Production ◽  
Cow Dung ◽  
Poultry Droppings

scholarly journals Effect of feed slurry dilution and total solids on specific biogas production by anaerobic digestion in batch and semi-batch reactors

2021 ◽  
Author(s):  
Gautham P. Jeppu ◽  
Jayalal Janardhan ◽  
Shivakumara Kaup ◽  
Anish Janardhanan ◽  
Shakeib Mohammed ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Substrate Inhibition ◽  
Cattle Dung ◽  
Cow Dung ◽  
Batch Reactors ◽  
Dilution Ratio ◽  
Total Solids ◽  
State Process ◽  
Wide Range

AbstractBiomass from various sources such as cow dung is a significant source of renewable energy (as biogas) in many regions globally, especially in India, Africa, Brazil, and China. However, biogas production from biomass such as cattle dung is a slow, inefficient biochemical process, and the specific biogas produced per kg of biomass is relatively small. The improvement of specific biogas production efficiency using various dilution ratios (and, hence, total solids [TS]) is investigated in this work. A wide range of feed dilution (FD) ratios of cow dung: water (CD: W) was tested in batch biogas digesters with total solids ranging from 1% to 12.5% and FD ratio ranging from 2:1 to 1:20. To further verify the results from the above batch experiments, semi-batch experiments representative of field-scale biodigesters were conducted. Semi-batch reactors have a steady-state process, unlike batch reactors, which have an unsteady state process. Our results suggested that specific biogas production (mL/g VS) increased continuously when the total solids decreased from 12.5% to 1% (or when dilution increased). Our experiments also indicate that the commonly used 1:1 feed dilution ratio (TS ~ 10% for cow dung) does not produce the maximum specific biogas production. The possible reason for this could be that anaerobic digestion at higher total solids is rate limited due to substrate inhibition, mass transfer limitations, and viscous mixing problems that arise at higher total solids concentration. Hence, a higher feed dilution ratio between 1:2 and 1:4 (TS between 4 and 6.7%) is recommended for a more efficient biomass utilization of cowdung. Empirical relationships were also developed for variation of specific biogas yield with the total solids content of the cow dung slurry. Graphic abstract

scholarly journals Biogas production from renewable lignocellulosic biomass

2015 ◽  
Vol 4 (2) ◽  
pp. 341-347 ◽  
Author(s):  
Venkatachalam Sundaresan Gnanambal ◽  
Krishnaswamy Swaminathan
Keyword(s):  
Lignocellulosic Biomass ◽  
Biogas Production ◽  
Lignin Content ◽  
Methanogenic Bacteria ◽  
Cow Dung ◽  
Source Water ◽  
Lignocellulosic Waste ◽  
Displacement Method ◽  
Water Displacement ◽  
Different Characteristics

Effect of raw and biologically treated lignocellulosic biomass using cow dung slurry for biogas production is reported. Biomass is an energy source. Water containing biomass such as sewage sludge, cow dung slurry and lignocellulosic waste, has several important advantages and one of the key feature is renewability. Cow dung slurry has the potential to produce large amounts of biogas. Four categories of bacteria viz., hydrolytic, fermentative, fermentative acidogenic and acidogenic-methanogenic bacteria are involved in the production of biogas. The different characteristics of the cow dung slurry were determined according to standard methods. Hemicellulose, cellulose and lignin content of the lignocellulosic waste were also determined in our earlier studies. The substrates were digested under anaerobic condition for 5 days. The total biogas and methane produced during anaerobic digestion were estimated on 5th day. The total biogas produced during digestion was estimated by water displacement method. Biological methane production was estimated by using Saccharometer. DOI: http://dx.doi.org/10.3126/ije.v4i2.12662 International Journal of Environment Vol.4(2) 2015: 341-347

scholarly journals Effect of Different Inoculum Combination on Biohydrogen Production from Melon Fruit Waste

2018 ◽  
Vol 7 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Yumechris Amekan ◽  
Dyah Sekar A P Wangi ◽  
Muhammad Nur Cahyanto ◽  
Sarto Sarto ◽  
Jaka Widada
Keyword(s):  
Hydrogen Production ◽  
Operating Conditions ◽  
Production Performance ◽  
Biohydrogen Production ◽  
Cow Dung ◽  
Strictly Anaerobic ◽  
Hydrogen Yield ◽  
Production Type ◽  
Fruit Waste ◽  
Melon Fruit

The natural microbial consortium from many sources widely used for hydrogen production. Type of substrate and operating conditions applied on the biodigesters of the natural consortium used as inoculum impact the variation of species and number of microbes that induce biogas formation, so this study examined the effect of different inoculum source and its combination of biohydrogen production performance. The hydrogen producing bacteria from fruit waste digester (FW), cow dung digester (CD), and tofu waste digester (TW) enriched under strictly anaerobic conditions at 37OC. Inoculums from 3 different digesters (FW, CD, and TW) and its combination (FW-CD, CD-TW, FW-TW, and FW-CD-TW) were used to test the hydrogen production from melon waste with volatile solids (VS) concentration of 9.65 g/L, 37°C and initial pH 7.05 ± 0.05. The results showed that individual and combined inoculum produced the gas comprising hydrogen and carbon dioxide without any detectable methane. The highest cumulative hydrogen production of 743 mL (yield 207.56 mL/gVS) and 1,132 mL (yield 231.02 mL/gVS) was shown by FW and FW-CD-TW, respectively. Butyric, acetate, formic and propionic were the primary soluble metabolites produced by all the cultures, and the result proves that higher production of propionic acid can decrease hydrogen yield. Clostridium perfringens and Clostridium baratii prominently seen in all single and combination inoculum. Experimental evidence suggests that the inoculum from different biodigesters able to adapt well to the environmental conditions and the new substrate after a combination process as a result of metabolic flexibility derived from the microbial diversity in the community to produce hydrogen. Therefore, inoculum combination could be used as a strategy to improve systems for on-farm energy recovery from animal and plant waste to processing of food and municipal waste.Article History: Received February 5th 2018; Received in revised form May 7th 2018; Accepted June 2nd 2018; Available onlineHow to Cite This Article: Amekan, Y., Wangi, D.S.A.P., Cahyanto, M.N., Sarto and Widada, J. (2018) Effect of Different Inoculum Combination on Biohydrogen Production from Melon Fruit Waste. Int. Journal of Renewable Energy Development, 7(2), 101-109.https://doi.org/10.14710/ijred.7.2.101-10

Producing Biogas with Two-Stage Fermentation Process of High Total Solids Content Kitchen Wastes

2012 ◽  
Vol 608-609 ◽  
pp. 344-349
Author(s):  
Xiao Ju Zhang ◽  
Shi Jie Li
Keyword(s):  
Fermentation Process ◽  
Biogas Production ◽  
Methanogenic Bacteria ◽  
Cow Dung ◽  
Kitchen Waste ◽  
Two Stage ◽  
Total Solids ◽  
Fermentation Tank ◽  
Solids Content ◽  
Biogas Process

This paper inoculated kitchen waste with activated sludge and fresh cow dung to explore the acidification and fermentation separated two-stage fermentation biogas process, in order to get acclimation acidification bacteria and methanogenic bacteria, high total solids content (TS) fermentation process, reduce the hydraulic load and shorten the fermentation cycle. The physiochemical characteristics of kitchen waste were that TS is 22.9%,the volatile solids (VS) is 11.7%, initial pH value is 6. The biogas producing process was as follow: Adjusting the TS of kitchen waste to 11.5% ,with 10% inoculum quantity, fermented at 37 °C , monitoring and adjusting pH. There were two biogas producing peak , and biogas production cycle was 15 days. The two-stage fermentation biogas process was as follow: Acidized the material of 22.9%TS for 5 days, Feeding the acidized material at the ratio of 1/4 to the vigorous biogas reaction system, then pH reduced but the biogas production was normal. After 5 days, pH raised and the second batch of material could be added. Feeding materials to the acidification tank and fermentation tank continuously, which can gradually get good acclimation acidification bacteria and methanogenic bacteria. Refluxing the biogas to acidification tank and methane fermentation tank, which can mix the materials evenly, shorten the fermentation cycle, improve the efficiency of the acidification and biogas production.

Evaluation of Biogas Production from Bio-Digestion of Organic Wastes

2020 ◽  
Vol 51 ◽  
pp. 217-227
Author(s):  
Oludare Johnson Odejobi ◽  
Oluwagbenga Abiola Olawuni ◽  
Samuel Olatunde Dahunsi ◽  
Akinbiyi Ayomikusibe John
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Organic Wastes ◽  
Methane Content ◽  
Composition Analysis ◽  
Cow Dung ◽  
Biogas Yield ◽  
Animal Manures ◽  
Ph Range ◽  
Poultry Droppings

The present study evaluates the influence of kitchen wastes on animal manures via anaerobic digestion for biogas production. The digestion was done using a digester with a capacity of 5L. The digester was loaded with the slurry of wastes prepared by mixing the wastes with water in ratio 1:1, and operated at mesophilic temperature of 37 ± 2°C for 30 days. The co-digestion of kitchen wastes with poultry droppings produced highest biogas yield (814.0 ml/kg VS fed) and the least (365.84 ml/kg VS fed) was from the co-digestion of kitchen wastes with the mixture of poultry droppings and cow dung. Composition analysis of the biogas showed the highest methane content (63.1%) from kitchen wastes and the lowest (56.2%) from co-digestion of kitchen wastes with poultry droppings. The pH range for optimum biogas production varied between 5.25 and 7.5. The study concluded that biogas yield from co-digestion of substrates, among other factors depends on the composition of participating substrates.

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