The Effect of Adding Corn Silage at Different Ratios to Orange and Tangerine Wastes on Biogas Production Efficiency (original) (raw)
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The qualitative evaluation of Biogas Samples Generated from Selected Organic Wastes
__________________________________________________________________ ABSTRACT Biogas generated from various agricultural wastes was subjected to compositional analysis so as to assess the quality of the biogas in terms of the methane, carbon (IV) oxide, and hydrogen sulfide content. On the basis of methane content paper waste has the highest quality biogas with 72.59% this is followed by saw dust with 68.79%, followed by cow dung with 66.00% and then rice husk with methane content of 64.97% the substrate that produced biogas with the lowest percentage methane is millet husk which gave 58.08% . The quality of biogas is also evaluated in terms carbon (IV) oxide content, the higher the carbon (IV) oxide content the lower biogas quality, base on this the highest percentage of CO 2 of 40.72% was recorded for millet husk this is followed by 33.00% for both cow dung and rice husk., saw dust gave 29.65% making it as substrate with the second best quality biogas after paper wastes which record...
This study centered on biogas production from locally available animal and kitchen wastes: swine dung (SD), plantain peel (PP) and fluted pumpkin stem (PS) using five 32-Litres metallic prototype digesters. The anaerobic digestion was in the ratio of 3:1 of water to waste for all the samples as follows: Sample A was 100%SD, Sample B; 100% PP, Sample C; 100% PS, Sample D; 50%SD+50%PP and Sample E; 40% SD+30% PP+30% PS. The retention time was 30 days and parameters like pH, pressure, daily biogas production, ambient and slurry temperatures alongside the physico-chemical properties of wastes were monitored. The cumulative gas production yield was 11.5L, 35.1L, 39.5L, 46.9L, 59.3L for Sample A, Sample B, Sample C, Sample D and Sample E respectively. The flammable time was 15 th , 5 th , 25 th , 26 th , 2 nd day for sample A, sample B, sample C, sample D and sample E respectively. The result revealed that the blend of the 3 substrates i.e. sample E: 40% SD+30% PP+30% PS gave the highest yield of biogas and flamed earlier than the other samples while sample A: 100%SD had the lowest yield of biogas. The results also showed that the sample that had the highest composition of methane in the biogas produced was Sample D: 50%SD+50%PP with 85.6989% while the lowest composition of methane was found in Sample C to be 79.0996%. The TS, TVS, BOD and VS were seen to be consistently reducing showing the level of waste treatment achieved during the digestion period of 30 days.
International Journal of Energy and Power Engineering , 2017
The biogas production and methane (CH 4) enrichment for anaerobic digestion (AD) of fruit and vegetable waste (FVW). The biogas production and methane content of fruit and vegetable wastes (FVW) degradation were evaluated against a treatment combination with a cow dung at a Ratio of FVW to Cow dung T1 (cow dung alone), T2 (1:3), T3 (1:1), T4 (3:1),and T5 (FVW alone). The digesters were operated for 80 days. The highest total methane yields about 78.35% was obtained from the cow dung digester (T1). The highest production of biogas yield (7552.67 ml) was observed in T1 and the lowest biogas production rate (2652.83ml) was from a reactor operated by FVW alone. Similar to the biogas yield, higher percentage of methane was produced in 1. Anaerobic digestion; vegetable and fruit wastes of high calorific contents can be transformed to a source of energy through the production of biogas in this day and age of energy insufficiencies. Role in maximizing the process of anaerobic digestion through speeding up hydrolysis and to compare production potentials of commonly available wastes in Addis Ababa for possible co-digestion in large scale production of biogas. Thermo-chemical pre-treatment was the most effective for speeding up hydrolysis with the co-digested substrates producing maximum biogas. The moisture content ranged between 67-83%. The pH reduced from 6.8-7.2 before digestion to 6.2-6.8 after digestion. The desired C: N ratio was between 18:1 to 32:1 for Anaerobic Digestion. The gas produced was found to contain 63.89% methane, 33.12% CO 2 and 3% other gases.
Comparative Study of Biogas Production from Different Food Wastes
2010
The proper management of solid waste is the need of the time. The solid waste consists of various components, some of them are biodegradable where as other are non biodegradable. The waste from various biodegradable sources could be utilized as a feed material for the gas production. The objective of this study is food waste management through biogas production. Comparative studies of biogas production using various substrates were carried out. The substrates used were (A) Kitchen waste and (B) Unprocessed food waste including raw vegetable waste (fenugreek) and banana waste. Various parameters were studied during biogas production like alkalinity, protein content, carbohydrate and chemical oxygen demand. During the comparative study of different substrates it was observed that the protein content, carbohydrates and chemical oxygen demand decreased with the increase in time, where as pH and alkalinity varied. In addition to these parameters methane production was also monitored with...
Production of Biogas As An Alternative Green Energy with Organic Wastes As The Main Raw Materials
Jurnal Veteriner
This research focused on the utilization of four different organic wastes, namely snake fruit, orange, cabbage, and tomato wastes, for the production of biogas. The main objectives were twofold: (1) to investigate the characteristics and biodegradability of these wastes, and (2) to evaluate their potential for anaerobic methane production. The experiment was conducted using 250 L bioreactors, with the four wastes serving as the primary raw materials. A starter culture of cattle dung was added, and the mixture was incubated for eight weeks. Regular sampling and analysis were carried out to assess water content, biodegradability, specific rate of volatile m aterial reduction, and gas yield. The results showed that the water content of the four waste systems remained relatively consistent throughout the experiment. Biodegradability analysis revealed that all of the wastes were biodegradable, with varying levels of degradation ranging from 23.10 ± 2.89% to 59.84 ± 4.17%. Snake fruit was...
Agriculture by-product: A Source for the Production of Biogas
Asian Journal of Engineering and Technology, 2015
Agricultural by-products, rice husk and maize bran were used anaerobically in this study to produce biogas. The suitability of these substrates as source of biogas and comparative study of the two substrates were investigated. Various analyses were carried out to determine the ash content, moisture content, volatile solids and fixed carbon content present in each substrate. The biogas produced was analyzed using a gas chromatograph and was found to contain oxygen, nitrogen and methane in various proportions. From the results of the analyses, rice husk produced a larger volume of gas than the maize bran, though the maize bran's gas has a higher content of methane than that of rice husk (about 60.90%). The experiment was carried out under mesophilic temperature range and a pH of 6.2-7.6
Quantitative and Qualitative Analysis of Biogas Produces From Three Organic Wastes
The use of biogas as a means of satisfying energy demands is a viable alternative to fuel wood which results in the indiscriminate felling of tress. Animal wastes as organic substrates in the production of biogas provide a cheap and eco-friendly method of managing wastes. In this study, three different animal wastes (Cow dung: pH1=7.08, pH2= 7.32; Goats' droppings: pH1=5.49, pH2=5.26; and Chicken droppings: pH1= 5.49, pH2= 5.75) were used as substrates in the production of biogas, and the experiment was carried out at ambient temperature for a hydraulic retention time of three weeks. A set of three laboratory digesters was used in the experimental set up, and the performance of the animal wastes was assessed based on the volume and quality of the biogas produced. The amount of biogas produced by the animal wastes in decreasing order is as follows; chicken droppings (18.27 litres), cow dung (12.55 litres) and goats' droppings (5.11 litres). The order of flammability of the biogas produced is as follows: cow dung > goats' droppings > chicken droppings. The following methanogens were isolated; Methanobacteriumsp., Methanococcus sp., Methanospirillum sp. and Methanosarcina sp. in the course of the experiment. In this study, cow dung produced the biogas of the highest quality and conclusively can be chosen as the best substrate for biogas production.
Studies On The Utilization Of Fruit And Vegetable Waste For Generation Of Biogas
As fossil fuels like coal and petroleum are depleting in India, so alternative sources of energy is the requirement of the present day. One amongst the major challenging source of energy is biogas being produced from biomass. At the same time, enormous amount of garbage produced in India is a huge problem in terms of disposal and handling. Therefore, an effort have been made here to utilize fruit and vegetable waste (FVW) for generation of bio-methane by anaerobic digestion (AD) method. Experiments have been carried out separately at four different slurry concentrations at three different temperatures respectively. Essentially all experiments have been performed by dry anaerobic digestion basis and five different catalysts have been added to promote the digestion process. From the study it is inferred that process with 4% slurry concentration at 37°C gave best results out of all processes. Productions of biogas yield, and ultimate methane yield have been presented.