scholarly journals Biogas efficiency from cow dung waste in strengthening energy security during the covid-19 pandemic through a dynamic modeling system

2021 ◽  
Vol 926 (1) ◽  
pp. 012085
Author(s):  
L Lusiana ◽  
N A Sasongko ◽  
Y D Kuntjoro ◽  
M Fakhruddin ◽  
A F Widrian ◽  
...  
Keyword(s):  
Dynamic Modeling ◽  
Energy Security ◽  
Research Method ◽  
Biogas Production ◽  
Cow Dung ◽  
Growth Ratio ◽  
Fuel Savings ◽  
Household Sector ◽  
Modeling Data ◽  
Production Modeling

Abstract During Covid-19 pandemic, the increase in LPG types was 0.6-2.4 million BOE, while in the household sector it was 2.3-6.9 million BOE, so causes LPG import growth ratio to increase by 4.8%/year (BPPT, 2020). Therefore, it is necessary to make efforts to suppress LPG imports by increasing the supply of EBT in the household sector with biogas production. The research aims to look at the biogas production modeling system from the resulting cow dung waste. The research method that studies the literature is based on modeling data based on data obtained using Powersim 10. The results showed that LPG demand in 2020 is 2.4 million BOE that could be fulfilled by a biogas source from 9539238.75 kg ~ 0.9 metric tons cow dung waste. This cow dung waste is able to produce 381569.55 m3/kg of methane gas which is equivalent to 0.59 metric tons LPG, savings Rp 690 M; 103 million liters gasoline, savings Rp 793 M; 64.8 million liters diesel fuel, savings Rp 333.8 M; 80 million liters kerosene, savings Rp 1 T; 4.53 metric tons wood, savings Rp 4.5 T. This favorable situation must be immediately felt by the community with an estimate of future benefits.

scholarly journals Optimasi Produksi Biogas Dari Campuran Kotoran Sapi Dan Rumput Gajah (Pennisetum purpureum)

2021 ◽  
Vol 4 (1) ◽  
pp. 29
Author(s):  
Nanda Saputra Nikolas ◽  
G M Saragih ◽  
Hadrah Hadrah
Keyword(s):  
Research Method ◽  
Biogas Production ◽  
Daily Temperature ◽  
Pennisetum Purpureum ◽  
Maximum Pressure ◽  
Cow Dung ◽  
Elephant Grass ◽  
Normal Range ◽  
Ph Values ◽  
Initial Ph

This study aims to determine the optimization of biogas production from a mixture of cow dung and elephant grass (Pennisetum Purpureum). Cow manure and fresh elephant grass are taken directly in Teluk Singkawang Village, Sumay District, Tebo Regency, Jambi Province. This research method is the experimental method. There are 4 variations of the mixture in the digester, namely P1 (RG: 25%, KS: 50%, water: 25%), P2 (RG: 50%, KS: 25%, water: 25%), P3 (KS: 75 % and Water: 25%), P4 (RG: 75%, and Water: 25the mixture was put into a digester from a plastic gallon with a volume of 18 liters and tightly closed. The study was conducted for 30 days. The parameters observed in this study included biogas pressure, flame test, daily temperature and initial and final pH. The results showed that the maximum pressure in all digesters I-V were as follows: 705.6 (N/m)2, 689 (N/m)2, 823.2 (N/m2), and in digester IV there was no gas pressure produced. The flame test conducted showed that there was a flame on the digester I-III (with the addition of cow dung) with the flame color, yellowish blue, reddish blue, and blue. Meanwhile, Digester IV (without the addition of cow dung) does not produce a flame. while the initial pH values of all variations were in the normal range, namely 7, 8, 7, 8 for P1, P2, P3 and P4 respectively; while the final pH was 7, 6, 7, 4, respectively. The average daily temperature was almost the same for all variations, namely 27.2 oC, 28.26 oC, 27.74 oC, and 27.94 oC. 

Analysis of Biogas Production From Fermentation Results of Pineapple Bark Waste as Main Raw Material

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Fatkur Rhohman ◽  
Hesti Istiqlaliyah
Keyword(s):  
Research Method ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Qualitative Approach ◽  
Raw Material ◽  
Energy Sources ◽  
Cow Dung ◽  
Fossil Energy ◽  
Real Effort ◽  
Very High

The need for energy is currently increasing. But, dependence on fossil energy is very high. So, there needs a real effort to develop new and renewable energy sources. One of the sources that can be developed for energy is biogas. Many natural resources can be used as raw material for biogas production, such as pineapple skin waste which is widely available in Kediri. This study aims to analyze the results of biogas production from a combination of pineapple skin, cow dung, EM4, and water. This research uses a qualitative approach. The research method is experimental research. The composition ratio used was 50 kg of pineapple skin, 50 liters of water, 2 kg of cow dung, and 2 liters of EM4. The study time was 30 days. the overall biogas production yield was 0.204 kg. The biggest increase in biogas production occurred on day 17 to day 25. From the results of data processing using numerical methods, the graphical equation of biogas production is described by the equation . y represents the volume of biogas production in grams. x represents the counted days to determine the production process.

scholarly journals Effect of Hydraulic Retention Time on Biogas Production from Cow Dung in A Semi Continuous Anaerobic Digester

2018 ◽  
Vol 7 (2) ◽  
pp. 93-100 ◽  
Author(s):  
Agus Haryanto ◽  
Sugeng Triyono ◽  
Nugroho Hargo Wicaksono
Keyword(s):  
Retention Time ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Biogas Production ◽  
Stable Condition ◽  
Anaerobic Digester ◽  
Organic Loading Rate ◽  
Cow Dung ◽  
Biogas Yield ◽  
Average Analysis

The efficiency of biogas production in semi-continuous anaerobic digester is influenced by several factors, among other is loading rate. This research aimed at determining the effect of hydraulic retention time (HRT) on the biogas yield. Experiment was conducted using lab scale self-designed anaerobic digester of 36-L capacity with substrate of a mixture of fresh cow dung and water at a ratio of 1:1. Experiment was run with substrate initial amount of 25 L and five treatment variations of HRT, namely 1.31 gVS/L/d (P1), 2.47 gVS/L/d (P2), 3.82 gVS/L/d (P3), 5.35 gVS/L/d (P4) and 6.67 gVS/L/d (P5). Digester performance including pH, temperature, and biogas yield was measured every day. After stable condition was achieved, biogas composition was analyzed using a gas chromatograph. A 10-day moving average analysis of biogas production was performed to compare biogas yield of each treatment. Results showed that digesters run quite well with average pH of 6.8-7.0 and average daily temperature 28.7-29.1. The best biogas productivity (77.32 L/kg VSremoval) was found in P1 treatment (organic loading rate of 1.31 g/L/d) with biogas yield of 7.23 L/d. With methane content of 57.23% treatment P1 also produce the highest methane yield. Biogas production showed a stable rate after the day of 44. Modified Gompertz kinetic equation is suitable to model daily biogas yield as a function of digestion time.Article History: Received March 24th 2018; Received in revised form June 2nd 2018; Accepted June 16th 2018; Available onlineHow to Cite This Article: Haryanto, A., Triyono, S., and Wicaksono, N.H. (2018) Effect of Loading Rate on Biogas Production from Cow Dung in A Semi Continuous Anaerobic Digester. Int. Journal of Renewable Energy Development, 7(2), 93-100.https://doi.org/10.14710/ijred.7.2.93-100

scholarly journals Suitability of Macrophytes for Wastewater Treatment and Biogas Generation

2019 ◽  
Vol 9 (2S2) ◽  
pp. 16-18
Keyword(s):  
Wastewater Treatment ◽  
Water Hyacinth ◽  
Aquatic Macrophytes ◽  
Aquatic Macrophyte ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Cow Dung ◽  
Water Lettuce ◽  
Before And After ◽  
Almost All

In this paper three sustainable approaches are made in waste management option. Firstly primary treated domestic sewage is treated by aquatic macrophytes using duckweed, water hyacinth and water lettuce. Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Phosphate, Nitrates are tested before and after. Result indicates in terms of water quality, almost all three plants shows same removal efficiencies. BOD and TSS removal efficiency is attained more than 95%. COD and TDS removal is reached upto 50% for almost all plants. Secondly the used aquatic macrophytes for wastewater treatment is again used for generation of biogas (water lettuce unit, duckweed unit, water lettuce unit). In addition to three aquatic macrophytes, sludge is collected from aquatic macrophyte unit for generation of biogas. Comparison is made with conventional cow dung biogas unit. Result indicates water lettuce and duckweed produce biogas at earlier stage itself and water hyacinth takes some time for starting of biogas production. This may be due to the structure and texture causes some time for decomposition. Sludge gives maximum biogas generation among all experimental setup. Also in this study cow dung did not give biogas more may be due to poor blend ratio of cow dung with water is one of the reason.

scholarly journals Application of Biogas Production Technology from Various Feedstocks on Small-Medium-Micro Enterprises: A Case Study

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Ari Diana Susanti ◽  
Cornelius Satria Yudha ◽  
Leader Firstandika ◽  
Paryanto Paryanto ◽  
Wusana Agung Wibowo
Keyword(s):  
Energy Consumption ◽  
Biogas Production ◽  
Economic Value ◽  
Cow Dung ◽  
Engineering Problems ◽  
Medium Enterprises ◽  
By Products ◽  
Biogas Technology ◽  
Micro Enterprises

<p>Biogas production process is an alternative method to reduce dependency on non-renewable fossil-based energy consumption and also can reduce greenhouse gases production both domestically and industrially. The existing biogas technology is suitable to be adapted in small-micro-medium enterprises and domestics, specifically for those who raise cattle. The case study was performed by observation of biogas production with various wastes as feed, namely cow dung, quail manure, and wastewater of tofu production. The study conducted via direct interviews with stake holders and visitations to the instalations. Based on our observation, biogas production from cow dung exhibits the shortest retention time compared to the others, aside from the value of C/N ratio of the biogas feedstocks. The presence of biogas production installations are significantly reducing the energy supplies among the users. Beside as biogas product, the instalations also produce solid and liquid fertilizers as by-products and have relatively high economic value. Socio – engineering problems based on the application of biodigester are also studied.</p>

Metagenomics and Metabolomics Study on Microbial Diversity and Enzymatic Activities Changes on Cow Dung Based Low-Temperature Biogas Production by Entererococcus spp

2021 ◽  
Vol 15 (3) ◽  
pp. 302-311
Author(s):  
Jingping Dai ◽  
Jiang Li ◽  
Wang Zhifang ◽  
Xie Yuqing ◽  
Wang Xiaou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Microbial Diversity ◽  
Biogas Production ◽  
Enzymatic Activities ◽  
Cow Dung ◽  
Study Results ◽  
Metabolomics Study ◽  
Alternative Sources ◽  
Dominant Bacteria ◽  
Glyoxylate Aminotransferase

To fill the gap between the rise in demand for energy and decline in the traditional energy sources such as coal, natural gas and nuclear energy, other alternative sources such as biogas are necessary. Studies have shown that the existing conditions within the fermentation realm control the microbial characteristics in biogas production. However, there is inadequate insight between the duration of fermentation and the microbial diversity, and with specific emphasis to cow manure as the substrate under low temperature fermentation. This study aimed at providing additional insight on the effect of varying fermentation duration (0 to 60 days) on the composition of the dominant microbial flora on cow dung based low-temperature (15 °C) biogas fermentation using metagenomics and metabolomics analyses approach. The study results showed that the main dominant community in the process of methanogenesis are the Spirochaetae, Synergistetes and Chloroflexi, and are new flora in the methane phase. In the peak stage of low-temperature biogas fermentation, the dominant bacteria groups were Methanosarcina and after adding 10% concentration of L1 bacteria. The prediction of metabolic pathway was mainly carbohydrate metabolism and amino acid metabolism with succinyl-CoA synthase a subunit, lactaldehyde reductase and the glutamate-glyoxylate aminotransferase being the main unique enzymes. The study therefore supports the potential of involving the reported dominant microbial communities and related enzymatic activities for improved biogas production under low temperature conditions.

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