Solid-State Anaerobic Digestion for Methane Production from Corn Stalks with Stack-Pretreated

2011 ◽  
Vol 697-698 ◽  
pp. 326-330 ◽  
Author(s):  
S.X. Zhou ◽  
Y.P. Dong ◽  
Y.L. Zhang
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Methane Production ◽  
Biogas Production ◽  
Cow Dung ◽  
Cow Manure ◽  
Pretreatment Method ◽  
Biogas Yield ◽  
Microbial Pretreatment ◽  
Microbial Strains

Microbial pretreatment was applied to enhance biogas production from corn stover through solid-state anaerobic digestion, but the price of microbial strains is high. The objective of this study was to find the effects on biogas production by the naturally microbial pretreatment method. The highest cumulative biogas yield for 60-day solid-state anaerobic digestion was obtained in B group (the pretreated corn straws with cow dung), which was 19.6% higher than that of the untreated samples. The D group（the pretreated corn straws with the sludge）cumulative biogas yield for 60-day solid-state anaerobic digestion was obtained, which was 18.87% higher than that of the untreted samples. The biogas of D group increased to the range of 55%～60% methane content, while B group with the range of 75%～80%.The results indicated that the pretreated corn straws mixing cow manure can improve both the biogas production yield and the content of methane in CH4。

scholarly journals Kinetic Study on Biogas Production from Cabbage (Brassica oleracea) Waste and Its Blend with Animal Manure Using Logistic Function Model

2021 ◽  
pp. 34-43
Author(s):  
Christian C. Opurum
Keyword(s):  
Anaerobic Digestion ◽  
Kinetic Parameters ◽  
Goodness Of Fit ◽  
Biogas Production ◽  
Logistic Function ◽  
Gas Production ◽  
Cow Dung ◽  
Function Model ◽  
Biogas Yield ◽  
Significant Difference

This research paper aimed to evaluate the kinetics of anaerobic digestion (AD) of mixtures of cabbage waste (CW) with (Poultry dropping (PD) and Cow dung (CD). The study was conducted in 10L bio-digesters for 35 days under mesophilic conditions (25 - 35OC). Logistic function equation was used to simulate the experimental data to test for its goodness of fit and kinetic parameters namely: maximum biogas potential (Pb), the maximum biogas production rate (Rm), and the lag phase duration (λ) were estimated in each treatment. Chemical analysis showed that individual substrates possess characteristics that could support microbial activities in biogas production. The biogas yield in terms of added  volatile solids (VS) in decreasing order was as follows: 0.022, 0.018, 0.017, 0.014, 0.014 and 0.013 dm3/g VS for CW/CD 2:1, CW/PD3:1, CW/CD 1:1, CW alone, CW/PD1:1 and  CW/PD 2:1, respectively. A significant difference (P ≤ 0.05) in biogas yield was recorded in CW/CD 2:1 with 7.19 dm3 (53.29% increase). The kinetic parameters (Pb, Rm, and λ) for CW/CD 2:1 was 7.01 dm3, 1.58 dm3.d, and 2.29 days, respectively. This was followed by CW/PD 3:1 (5.84 dm3); with 24.92% increase in gas production and CW/CD 1:1 (5.42 dm3) with 15.53% increase relative to CW alone, 4.69 dm3. The digesters fed with CW/PD 1:1 and CW/PD 2:1 exhibited inhibitory effects on biogas production, with 7.51 and 2.05% decrease in gas yield, respectively. The logistic function model demonstrated a strong relationship between the experimental and model-predicted data. The high correlation coefficient (R2) ranging between 0.978 - 0.993 is evident. The model proved to be a useful tool in predicting anaerobic digestion and biogas production process.

Study on Solid-State Anaerobic Co-Digestion with Distiller’s Grains and Food Waste for Methane Production

2012 ◽  
Vol 485 ◽  
pp. 306-309
Author(s):  
Li Hong Wang ◽  
Qun Hui Wang ◽  
Wei Wei Cai
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Synergistic Effect ◽  
Food Waste ◽  
Methane Production ◽  
Waste Treatment ◽  
Biogas Production ◽  
Methane Yield ◽  
Kitchen Waste ◽  
Distiller's Grains

Solid-state anaerobic digestion (SSAD) of distiller’s grains (DG) and kitchen waste (KW) for biogas was investigated. Six DG to KW ratios of 10/1, 8/1, 6/1, 4/1, 1/0, and 0/1 was used. The results showed that in 48 digestion days the co-digestion with DG to KW ratio of 8:1 obtained the highest methane yield of 159.74mL/gTS, TS and VS reductions of 58.7% and 71.8%, hemicellulase, cellulose and lignin reductions of 46.7%, 45.4% and 4.0%. Compared to mono-digestions of DG or KW, co-digestion of DG and FW had a good synergistic effect. It indicated that SSAD of cellulosic-based waste and food waste could be one of the options for efficient biogas production and waste treatment

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.

Experimental and Modelling Approach of Biogas Production by Anaerobic Digestion of Agricultural Resources

2017 ◽  
Vol 68 (6) ◽  
pp. 1294-1297 ◽  
Author(s):  
Gabriela Alina Dumitrel ◽  
Adrian Eugen Cioabla ◽  
Ioana Ionel ◽  
Lucia Ana Varga
Keyword(s):  
Anaerobic Digestion ◽  
Methane Production ◽  
Biogas Production ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Lag Phase ◽  
Biogas Yield ◽  
Agricultural Resources ◽  
Methane Production Rate ◽  
Modelling Approach

Anaerobic digestion processes of agricultural resources, as single substrates (wheat bran and barley) or as combination of substrates (75 % corn&25% corn cob � named MIX1 and 40 % corn & 40 % wheat&20 % sunflower husks � named MIX2), were performed, at a mesophilic temperature in a batch reactor, at pilot scale. The results proved that the higher quantity of biogas yield was achieved for barley, followed by MIX1, and finally MIX2. The same order was obtained when the total methane production was evaluated. The performances of digesters were mathematically evaluated by using the modified Gompertz equation. The kinetic parameters, such as the methane production potential (MP), the maximum methane production rate (Rm) and the extent of lag phase (l) were calculated, for each experimental case. The values of the performance indicators confirmed that all the models fitted well with the experimental data.

Investigation of Biogas Production Using Organic Kitchen Wastes through Anaerobic Digestion

2015 ◽  
Vol 787 ◽  
pp. 97-101
Author(s):  
D. Thamilselvan ◽  
K. Arulkumar ◽  
M. Kannan
Keyword(s):  
Anaerobic Digestion ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Renewable Resource ◽  
Biogas Plant ◽  
Cow Dung ◽  
Fermentation Time ◽  
Ph Variation ◽  
Biogas Yield ◽  
Oil Crisis

The present day’sresearch interests on bioenergy have been expanded rapidly due to oil crisis of 1980s. This bio energy should be available in locally and it’spurer than the fossil fuels. The field of bio energyis important for governments, scientists and business people in worldwide because of its available in nature and renewable resource. Todays the most important renewable energy is Biomass. The biological conversion of biomass to methane has become rapidly increasing in present days. All types of organic wastes can be converted to methane. In this study the installed plant is a sintex floating type biogas plant. The cubic capacity of plant is about 1000 liter. The pH range is maintained in the level of 6.8 to 7.5. The fermentation time of the anaerobic digestion for the efficient usage of gas as a fuel is about 30 days. Our biogas plant is used for all types of anaerobic respirating wastes such as cow dung manure, kitchen wastes etc.The input feed of kitchen waste is about 10 kg per day. The output of the biogas yield is about 0.714 m3/kg. The composition of biogas is 50% to 60% of methane and rather than remaining 30% to 40% CO2and small amount of water about 2% to 5%. The performance characteristics of biogas plant are studied in this paper. To evaluate the performance of biogas production and pH variation throughout this study.

scholarly journals Influence of moisture content of solid-state NaOH pretreatment and codigestion on methane production in the semi-dry anaerobic digestion of rose stalk

BioResources ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 4210-4223
Author(s):  
Yongsheng Chen ◽  
Zhijuan Ke ◽  
Yue-gan Liang
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Moisture Content ◽  
Methane Production ◽  
Biogas Production ◽  
Pig Manure ◽  
Naoh Pretreatment ◽  
Production Kinetics ◽  
Anaerobic Codigestion ◽  
Dry Anaerobic Digestion

Large quantities of burned or abandoned rose stalks are leading to serious environmental pollution. In this study, the effect of the moisture content of a solid-state NaOH pretreatment on methane production was first determined by a biochemical methane potential test. Then, the effect of codigestion with pig manure on methane production was investigated under the optimal moisture via thermophilic semi-dry anaerobic digestion by leaching bed reactor. Biogas production kinetic was assessed by the first-order kinetic model and modified Gompertz model. An increase in methane yield and biogas production kinetics was shown in the solid-state NaOH pretreated biomass. There was no significant difference in methane production for the three moisture contents studied during pretreatment (54%, 70%, and 77%). The anaerobic codigestion of rose stalk and pig manure increased 41% to 52% for methane yields and improved biogas production kinetics compared with monodigestion of rose stalk. Anaerobic codigestion did not greatly change the process stability, except for NH4+-N. The optimal process for the anaerobic digestion of rose stalk was as follows. The rose stalk was initially pretreated via solid-state NaOH pretreatment with a moisture content of 70%. Then, the pretreated rose stalk was co-digested with pig manure at a total solids ratio of 1:1.

scholarly journals The Effect of Grinding on Biogas Production from Rice Husk Waste During Solid State Anaerobic Digestion (SS-AD)

2020 ◽  
Vol 202 ◽  
pp. 08004
Author(s):  
Syafrudin ◽  
Winardi Dwi Nugraha ◽  
Aisyah Bahrani ◽  
Hashfi Hawali Abdul Matin ◽  
Budiyono
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Rice Husk ◽  
Biogas Production ◽  
Control Variable ◽  
Preliminary Treatment ◽  
Biogas Yield ◽  
Preparation Phase ◽  
Biogas Reactors ◽  
Operation Phase

Biogas technology solves the problem of energy crisis. Biogas is a renewable and environment friendly fuel (Franthena, 2015). This study aims to determine the optimum value of grinding size variations in biogas production with the solid state anaerobic digestion (SS-AD) method of biogas production from rice husk waste. We divide the method used into four stages, namely, the testing phase of total rice content, solids, preparation phase, operation phase, and results analysis. The rice husk waste used for this study came from the Rowosari area. We accept rice for preliminary treatment with chemical pretreatment (NaOH). We soaked rice husk with a concentration of 6% NaOH for 24 hours as a control variable. Milling variations used as physical pretreatment are 10 mesh, 18 mesh, 35 mesh, 60 mesh. We used bioreactors with a volume of 200 ml. We observed all biogas reactors produced every two days for ± 60 days of research. The results showed that the reactors with 10 mesh, 18 mesh, 35 mesh, 60 mesh milling variations obtained a total biogas yield of 11.688484; 9,479955; 12.50772; 19,03718 ml / grTS until the 60th day. The control reactor (without grinding variations) produced 9,084606 ml / grTS. The highest biogas production level is 60 mesh with a value, (A) 19.03718 (ml / grTS); the rate of biogas production (U) 0.2416979 (ml / gr TS.day); and the minimum time for biogas formation (λ) is 3.83908 days.

scholarly journals Biogas production from cow dungs using a modified fixed-dome digester

2021 ◽  
Vol 7 (3) ◽  
pp. 224-230
Author(s):  
Mtamabari Simeon Torbira ◽  
Ebigenibo Genuine Saturday
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Total Solid ◽  
Cow Dung ◽  
Biogas Yield ◽  
Carbon To Nitrogen Ratio ◽  
Temperature Range ◽  
Nitrogen Ratio ◽  
Design And Construction

A modified fixed dome digester with stirring mechanism has been designed and constructed and used for the anaerobic digestion of cow dung slurry at 5%-7% Total solid (TS) concentration within the mesophylic temperature range. The quality of biogas gas produced was between 54%-69% methane (CH4) content. The Carbon to Nitrogen ratio (C: N) varied between 35:1 - 45:1. Total biogas yield obtained over the detention period was about 261 L. The maximum and minimum temperatures recorded over the 95 days period was 32oC and 25 oC respectively. The volume of biogas yield, Vb (m3) was observed to increase with the percentage total solid, PTS (%). The details of the design and construction of the biogas digester plant and its cost are reported. The performance of the plant was very satisfactory. Investigation into the anaerobic digestion revealed that cow dung has great potentials for generation of biogas.

scholarly journals Evaluation of Biogas through Chemically Treated Cottonseed Hull in Anaerobic Digestion with/without Cow Dung: An Experimental Study

2021 ◽  
Author(s):  
Venkateshkumar R ◽  
Shanmugam S ◽  
Veerappan AR
Keyword(s):  
Anaerobic Digestion ◽  
Sodium Hydroxide ◽  
Calcium Hydroxide ◽  
Biogas Production ◽  
Cow Dung ◽  
Batch Reactors ◽  
Biogas Yield ◽  
Cottonseed Hull ◽  
Pre Treatment ◽  
Feedstock Material

Abstract Cow dung is generally used as the feedstock material for the anaerobic digestion to produce biogas. A selection of alternate biomass material is needed to reduce the consumption or to eliminate the use of cow dung. Recently, cottonseed hull has been considered as the primary substrate to produce biogas. In this paper, the effect of biogas production on anaerobic co-digestion of cow dung with pre-treated cottonseed hull using different concentrations of sulfuric acid, hydrochloric acid, hydrogen peroxide, and acetic acid is investigated. Sodium hydroxide and calcium hydroxide are used at different concentrations for pre-treatment of cottonseed hull. The enhancement of biogas production from the batch reactors at mesophilic temperature (35 ± 2 ℃) is observed for mono- and co-digestion of cow dung with treated cottonseed hull. Maximum biogas yield is achieved for the treated cottonseed hull at 6% sodium hydroxide during mono digestion and at 6% calcium hydroxide during co-digestion.

scholarly journals The Effect of Acid Pre-Treatment using Acetic Acid and Nitric Acid in The Production of Biogas from Rice Husk during Solid State Anaerobic Digestion (SS-AD)

2018 ◽  
Vol 31 ◽  
pp. 01006 ◽  
Author(s):  
Winardi Dwi Nugraha ◽  
Syafrudin ◽  
Cut Fadhila Keumala ◽  
Hashfi Hawali Abdul Matin ◽  
Budiyono
Keyword(s):  
Acetic Acid ◽  
Nitric Acid ◽  
Anaerobic Digestion ◽  
Solid State ◽  
Rice Husk ◽  
Biogas Production ◽  
Control Variable ◽  
Biological Pretreatment ◽  
Acid Pretreatment ◽  
Biogas Yield

Pretreatment during biogas production aims to assist in degradation of lignin contained in the rice husk. In this study, pretreatment which is used are acid and biological pretreatment. Acid pretreatment was performed using acetic acid and nitric acid with a variety levels of 3% and 5%. While biological pretreatment as a control variable. Acid pretreatment was conducted by soaking the rice straw for 24 hours with acid variation. The study was conducted using Solid State Anaerobic Digestion (SS-AD) with 21% TS. Biogas production was measured using water displacement method every two days for 60 days at room temperature conditions. The results showed that acid pretreatment gave an effect on the production of biogas yield. The yield of the biogas produced by pretreatment of acetic acid of 5% and 3% was 43.28 and 45.86 ml/gr.TS. While the results without pretreatment biogas yield was 29.51 ml/gr.TS. The results yield biogas produced by pretreatment using nitric acid of 5% and 3% was 12.14 ml/gr.TS and 21.85 ml/gr.TS. Results biogas yield with acetic acid pretreatment was better than the biogas yield results with nitric acid pretreatment.

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