Biogas Yielding Potential of Maize Chaff Inoculated with Cow Rumen and Its Characterization (original) (raw)
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Conversion of Agricultural Waste (Maize) Into Energy Using Biogas Technology
American-Eurasian Journal of Agricultural and Environmental Sciences, 2019
The aim of the study was to examine the biogas and methane yield of maize silage, wastes in agricultural point of view and compare it to the biogas productivity of commonly used mixture of maize silage and mixed fodder with water. The experimental study was carried out into 2 parts. Firstly, the batch experiment was conducted in Mesophilic conditions (35°C), at five different hydraulic retention times (HRT): 6 Days, 11 Days, 20 Days, 29 Days and 41 Days. The results revealed that maize silage was generated the highest biogas yield of 537 mL /241 mL at the HRT of 6 days /41 days. Mixed fodder produced the highest biogas yield of 421 mL at the HRT of 6th days and the lowest one was 252 mL at the HRT of 20th days. Finally, the methane, carbon dioxide and hydrogen sulphide of biogas produced from maize silage and mixed fodder were analyzed using a gas chromatography. The results showed that biogas from maize silage precede the gas less than the mixed fodder. In the field level experimen...
Effect of corn straw pretreatment on efficiency of biogas production process: Computer simulation
2020
Online aceess of full paper is available at: www.engineeringscience.rs/browse-issues Cite article: Antanaskovic, A., Bulatovic, M., Rakin, M., Lopicic, Z., Sostaric, T., & Rakin, M. [2020]. Effect of corn straw pretreatment on efficiency of biogas production process computer simulation. Journal of Applied Engineering Science, 18(4), 561 564. Maja Bulatović University of Belgrade, Faculty of Technology and Metallurgy, Department of Biochemical engineering and biotechnology, Belgrade, Serbia
Proceedings of the International Conference on Energy and Sustainable Development: Issues and Strategies (ESD 2010), 2010
A comparative study of the effect of chemical treatment on biogas production from Bambara nut (Vigna Subterranea) chaff and the chaff blended with; cow dung (BNC:CD), swine dung (BNC:SD), field grass (BNC:FG), and cassava peels (BNC:CP) in the ratio 1:1, all treated with KOH (50% w/v) was investigated. The different variants from the treated wastes were charged into 50L metal prototype biodigesters in the ratio 3:1 water to waste. They were all subjected to anaerobic digestion under a 65 day retention period and temperature range of 25 o C-41 o C. Results obtained showed that BNC had a cumulative gas yield of 186.9 ± 2.6 dm 3 /TMS (Total mass of slurry) with the flash point on the 5 th day even though the flammability discontinued on the 9 th day. Blending and chemical treatment increased the cumulative gas yields and sustained onset of gas flammability of the cow dung and field grass blends with the BNC: CD having cumulative gas yield of 223.80 ± 2.7dm 3 /TMS and flash point on the 26 th day while BNC: FG had 207.70 ± 2.0dm 3 /TMS and flash point on the 56 th day. However, there was no observed positive effect of the treatment on BNC: SD and BNC: CP with cumulative gas yields of 130.80 ± 2.3dm 3 /TMS and 132.30 ± 2.5 dm 3 /TMS respectively and with both systems not producing flammable biogas throughout the retention period. Results of mineral ions content showed that while most of the minerals were found in reasonable levels within the limits required, Ca 2+ exceeded the limit and was actually at a level capable of inhibiting biogas production. Overall results showed that Bambara nut chaff is a highly unstable waste which blending and chemical treatment did not improve tremendously.
Evaluation of maximum biogas production capacity from different feedstocks: An experimental study
Poljoprivredna tehnika, 2020
This study reveals the maximum biogas production capacity of different biomass using plant and animal waste material as feedstock. A comparative experiment conducted under anaerobic condition showed that biogas yield from poultry litter (28 liters) was higher than that of rice husk (18 liters) in a 30day retention time. However, the yield of biogas was significantly influenced by the composition of the waste feedstock and the environmental conditions within the reactor. The poultry litter had already undergone some digestion process before it was excreted by the birds, which means their bonds were broken by digestive organisms which made the anaerobic digestion process to be easily accomplished. Similarly, the rice husk had a low gas production rate due to the presence of high lignin properties because rice is a lignin cellulose material. Therefore, for optimum gas production, the waste should be pretreated at lower temperate region to increase the digestion temperature since temperature exerts a major influence in biogas production.
Nigerian Journal of Technology
Food waste (FW) contribute to emission of greenhouse gases as well as environmental pollution. One way of reducing the impact of FW on the environment is by using it for biofuel production. The yield of biofuel from FW can be improved if the substrate is pretreated. In this study, ensiling was used as a cost effective method of pretreating FW for biomethane production. Co-ensiling of FW and maize straw (MS) was carried out at carbon to nitrogen ratios (C/N) of 20, 25, 30 and 35 for 210 days at ambient temperature. Thereafter, the biomethane potential (BMP) of the silages was determined using an automatic biomethane potential test system. Results showed that ensiling reduced both structural and non-structural carbohydrate components of the silages. BMPs of 385.58, 497.39, 520.53, 551.37, 542.16 and 517.29mL/gVS from the unensiled FW, ensiled FW without MS, co-ensiled FW at C/N ratio of 20, co-ensiled FW at C/N ratio of 25, co-ensiled FW at C/N ratio of 30 and co-ensiled FW at C/N rat...
BIOGAS PRODUCTION FROM FRESH MAIZE BIOMASS
2010
There is a need to find acceptable energy crops for biogas production for the climatic and soil conditions in Latvia. The average annual dry matter yields from maize vary from 12 to 16 t·ha -1 under the climatic conditions in Latvia. Biogas yield from fresh maize biomass was investigated in dependence on the harvesting time of maize. The maize varieties Tango and Celido were harvested in September 8, September 20 and October 8. For biogas investigations 6 laboratory fermenters of 5 litres volume, operating in batch mode were used. Green maize biomass was mixed with water and animal manure for enhanced anaerobic treatment process. The biogas yield from biomass samples varies from 476 l·kg VOS -1 to 570 l·kg VOS -1 . There were not verifiable advantages in volumes of biogas between the samples harvested in different periods found. The average methane content was in the range from 49.6 % to 59.3 % in biogas from different samples of maize biomass.
Optimization of Raw Material Composition in an Agricultural Biogas Plant
Trends in Renewable Energy, 2017
We analyzed the operation of a typical agricultural biogas plant in Hungary. Our aim was to optimize the composition of substrates for the biogas production and make a correct recommendation for completing feedstock recipes by considering the raw materials and technologies analyzed. The calculations were based on a very detailed database (including the daily operating data of 1673 days). Distribution of the biogas yields in summer and winter periods was normal based on the One-Sample Kolmogorov-Smirnov test, while the variance of data was homogeneous based on the Levene-test. Factor analysis of the biogas yield was performed with the Kaiser-Meyer-Olkin Measure of Sampling Adequacy probe (0.616) and the Bartlett's Test. According to the objectivity of our LP (linear program) model, we believe that a significant excess biogas yield (18-66%) could be achieved by the use of our model compared to the actual measured data. Although the amount of corn silage, grass silage, and the extract-as variables-was minimal in the recipe, they played a crucial role in the total biogas yield of the recipe because of their significantly higher organic matter contents and specific biogas yields. Our results could provide a reliable foundation for optimizing of the recipe in biogas plants with raw material base similar to the analyzed plants.
Maize Straw as a Valuable Energetic Material for Biogas Plant Feeding
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Maize has great potential, especially as a substrate for biofuels production. The aim of this paper is to analyze the possibility of usage in methane fermentation maize straw harvested in different weather conditions, which had an influence on different physical parameters, mainly the dry mass content. The research has shown that maize straw harvested in Central-Eastern Europe can have a broad spectrum of dry mass content, which is related to diverse weather conditions during autumn. However, independently from moisture content, maize straw can be a good (for more wet material) or very good (for more dried straw) substrate for the biogas plant. With the methane productivity reaching 201–207 m3/Mg of fresh mass, this material is a significantly better substrate than that typically used in Europe maize silage (approximately 105 m3/Mg FM). It was noted that the retention time for maize straw (36–42 days) is longer than in the case of maize silage (less than 30 days). However, this diff...
The Possibility of Maize Straw Application as a Substrate for Biogas Plants
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The maize straw has a huge energetic potential. In Poland, the maize straw harvest can reach almost 5 million ha per year. With the good perspective for biogas market development in Poland, maize straw can become a good, reasonable substrate for biogas plant and avoid the conflict between food and biofuels production. This paper presents the potential for maize straw used as substrate for biogas plants. The results show that maize straw can be more effective for biogas productivity than maize silage. For 3 kinds of maize straw silage (from 4 analysed in total) the results of methane production were significantly higher (120.14 – 141.73 m/Mg FM) than in case of typical maize silage biomethane efficiency.