scholarly journals Preliminary analysis on mowing and harvesting grass along riverbanks for the supply of anaerobic digestion plants in north-eastern Italy

2015 ◽  
Vol 46 (3) ◽  
pp. 100 ◽  
Author(s):  
Davide Boscaro ◽  
Andrea Pezzuolo ◽  
Stefano Grigolato ◽  
Raffaele Cavalli ◽  
Francesco Marinello ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Preliminary Analysis ◽  
Food Production ◽  
Biogas Production ◽  
Field Capacity ◽  
North Eastern ◽  
Labour Requirement ◽  
Methane Potential ◽  
Increasing Demand ◽  
Energy Aspects

The increasing demand of vegetal biomass for biogas production is causing competition with food production. To reduce this problem and to provide new opportunities it is necessary to take into consideration different kinds of vegetable biomass that are more sustainable. Grass from the maintenance of non-cultivated areas such as riverbanks has not yet been fully studied as a potential biomass for biogas production. Although grass has lower methane potential, it could be interesting because it does not compete with food production. However, there is a lack of appropriate technologies and working system adapted to these areas. In this paper, different systems that could be available for the mowing and harvesting of grass along riverbanks have been preliminarily assessed through the evaluation of the field capacity, labour requirement, economic and energy aspects. The splitting of the cutting and harvesting phases into operations with different machinery seems to be the best system for handling this biomass. However, these solutions have to take into consideration the presence of obstacles or accessibility problems in the harvesting areas that could limit the operational feasibility and subsequent correct sizing.

scholarly journals Biochemical Methane Potential of Cork Boiling Wastewater at Different Inoculum to Substrate Ratios

2021 ◽  
Vol 11 (7) ◽  
pp. 3064
Author(s):  
Roberta Mota-Panizio ◽  
Manuel Jesús Hermoso-Orzáez ◽  
Luis Carmo-Calado ◽  
Gonçalo Lourinho ◽  
Paulo Sérgio Duque de Brito
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Treatment Plant ◽  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Volatile Solids ◽  
Working Volume ◽  
Methane Potential ◽  
Bmp Test ◽  
Cork Industry

The present study evaluates the digestion of cork boiling wastewater (CBW) through a biochemical methane potential (BMP) test. BMP assays were carried out with a working volume of 600 mL at a constant mesophilic temperature (35 °C). The experiment bottles contained CBW and inoculum (digested sludge from a wastewater treatment plant (WWTP)), with a ratio of inoculum/substrate (Ino/CBW) of 1:1 and 2:1 on the basis of volatile solids (VSs); the codigestion with food waste (FW) had a ratio of 2/0.7:0.3 (Ino/CBW:FW) and the codigestion with cow manure (CM) had a ratio of 2/0.5:0.5 (Ino/CBW:CM). Biogas and methane production was proportional to the inoculum substrate ratio (ISR) used. BMP tests have proved to be valuable for inferring the adequacy of anaerobic digestion to treat wastewater from the cork industry. The results indicate that the biomethane potential of CBWs for Ino/CBW ratios 1:1 and 2:1 is very low compared to other organic substrates. For the codigestion tests, the test with the Ino/CBW:CM ratio of 2/0.7:0.3 showed better biomethane yields, being in the expected values. This demonstrated that it is possible to perform the anaerobic digestion (AD) of CBW using a cosubstrate to increase biogas production and biomethane and to improve the quality of the final digestate.

Towards new indicators for the prediction of solid waste anaerobic digestion properties

2006 ◽  
Vol 53 (8) ◽  
pp. 233-241 ◽  
Author(s):  
P. Buffiere ◽  
D. Loisel ◽  
N. Bernet ◽  
J-P. Delgenes
Keyword(s):  
Anaerobic Digestion ◽  
Solid Waste ◽  
Biochemical Composition ◽  
Anaerobic Degradation ◽  
Biogas Production ◽  
Methane Content ◽  
Methane Potential

The biochemical composition can be seen as a good indicator of both the biodegradability and the methane potential of a given waste. The work presented here is an attempt to elaborate a typology of wastes and to compare it to the anaerobic degradation characteristics. The first data indicate that there is a link between the ligno-cellulosic content of the waste and the biodegradability. When dealing with application to anaerobic digestion processes, having a tool to predict the ability of the waste to be degraded could be of the greatest interest for preventing failures, estimating biogas production, methane content, or for the management of co-digestion processes.

scholarly journals Potencjał metanogenny mieszanek substratów pochodzenia rolniczego

2013 ◽  
Vol 11 (2) ◽  
pp. 149-157
Author(s):  
Anna Zamojska-Jaroszewicz ◽  
Anna Matuszewska ◽  
Marlena Owczuk ◽  
Dorota Wardzińska
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Swine Manure ◽  
Organic Fraction ◽  
Fraction Composition ◽  
Silage Maize ◽  
Methane Potential

The paper presents the results of research into the influence of organic fraction composition on yield and dynamics of anaerobic digestion of swine manure and silage maize mixtures. It defines the biological methane potential of individual mixtures and proposes the best option for biogas production on a larger scale.

Mesophilic Fermentation of SOMW in a Micro Pilot-Scale Anaerobic Digester

2013 ◽  
Vol 827 ◽  
pp. 84-90 ◽  
Author(s):  
Maurizio Carlini ◽  
Sonia Castellucci ◽  
Silvia Cocchi
Keyword(s):  
Anaerobic Digestion ◽  
Energy Production ◽  
Biogas Production ◽  
Ph Control ◽  
Pilot Scale ◽  
Biochemical Methane Potential ◽  
Mediterranean Countries ◽  
Methane Potential ◽  
Environmentally Sound ◽  
Bmp Test

One of the most promising processes to exploit Solid Olive-Mill Waste (SOMW) for energy production is anaerobic digestion. An experimental study has been carried out on SOMW and inoculum, consisting of Cattle Slurry Digested (CSD) and coming from an anaerobic digestion plant. A substrate with an optimal supply ratio equal to 2:1 has been investigated in a reactor at 37°C by analysing the biogas production. The Biochemical Methane Potential (BMP) test has been carried out, monitoring pH, biogas production (amount and composition). According to the tests results, SOMWs needed to be diluted and inoculated, moreover the pH control is foundamental in order to obtain a significant biogas production. Anaerobic digestion plant of SOMW should be promoted in Mediterranean countries as an environmentally sound option for waste management and energy production, since olive mills are very widespread agro-industries in this area.

scholarly journals Use of Confectionery Waste in Biogas Production by the Anaerobic Digestion Process

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 37 ◽  
Author(s):  
Agnieszka A. Pilarska ◽  
Krzysztof Pilarski ◽  
Agnieszka Wolna-Maruwka ◽  
Piotr Boniecki ◽  
Maciej Zaborowicz
Keyword(s):  
Anaerobic Digestion ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Test Material ◽  
Biochemical Methane Potential ◽  
Biogas Yield ◽  
Ph Values ◽  
Chemical Equations ◽  
Biogas Plants ◽  
Methane Potential

It was the objective of this study to verify the efficiency and stability of anaerobic digestion (AD) for selected confectionery waste, including chocolate bars (CB), wafers (W), and filled wafers (FW), by inoculation with digested cattle slurry and maize silage pulp. Information in the literature on biogas yield for these materials and on their usefulness as substrate in biogas plants remains to be scarce. Owing to its chemical structure, including the significant content of carbon-rich carbohydrates and fat, the confectionery waste has a high biomethane potential. An analysis of the AD process indicates differences in the fluctuations of the pH values of three test samples. In comparison with W and FW, CB tended to show slightly more reduced pH values in the first step of the process; moreover an increase in the content of volatile fatty acids (VFA) was recorded. In the case of FW, the biogas production process showed the highest stability. Differences in the decomposition dynamics for the three types of test waste were accounted for by their different carbohydrate contents and also different biodegradabilities of specific compounds. The highest efficiency of the AD process was obtained for the filled wafers, where the biogas volumes, including methane, were 684.79 m3 Mg−1 VS and 506.32 m3 Mg−1 VS, respectively. A comparable volume of biogas (673.48 m3 Mg−1 VS) and a lower volume of methane (407.46 m3 Mg−1 VS) were obtained for chocolate bars. The lowest volumes among the three test material types, i.e., 496.78 m3 Mg−1 VS (biogas) and 317.42 m3 Mg−1 VS (methane), were obtained for wafers. This article also proposes a method of estimation of the biochemical methane potential (theoretical BMP) based on the chemical equations of degradation of sugar, fats, and proteins and known biochemical composition (expressed in grams).

scholarly journals Use of Grasses and Mixtures of Grasses for Energy Purposes

10.14311/1534 ◽  
2012 ◽  
Vol 52 (3) ◽  
Author(s):  
David Andert ◽  
Jan Frydrych ◽  
Ilona Gerndtová
Keyword(s):  
Anaerobic Digestion ◽  
Food Production ◽  
Dry Matter ◽  
Biogas Production ◽  
Perennial Grasses ◽  
Land Area ◽  
Optimum Proportion ◽  
Productivity Increase ◽  
Cumulative Production ◽  
Cattle Herds

As levels of agricultural productivity increase, there is also an increase in land area not utilized for food production. This area can be used for growing energy crops, including grasses. When land is set aside for grassing, or when the potential of perennial grasses is not utilized due to reductions in cattle herds, there is also an increased amount of grass that can be utilized for energy purposes. Experiments were carried out on the principle of single-stage anaerobic digestion within the mezophyle range. During the experiments, we measured the cumulative production of biogas and its composition. The processed grass was disintegrated by pressing and cutting. This adaptation of the material resulted in increased biogas production. The optimum proportion of grass dry matter is from 35 to 50 % in the total d.m. The results of the experiments proved the suitability of grass phytomass as a material for biogas production.

scholarly journals Integration of Hydrothermal Carbonisation with Anaerobic Digestion; Opportunities for Valorisation of Digestate

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1586 ◽  
Author(s):  
Kiran R. Parmar ◽  
Andrew B. Ross
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Poor Quality ◽  
Process Water ◽  
Effect Of Temperature ◽  
Solid Loading ◽  
Agricultural Residue ◽  
Heating Value ◽  
Methane Potential ◽  
Hydrothermal Carbonisation

Hydrothermal carbonisation (HTC) has been identified as a potential route for digestate enhancement producing a solid hydrochar and a process water rich in organic carbon. This study compares the treatment of four dissimilar digestates from anaerobic digestion (AD) of agricultural residue (AGR); sewage sludge (SS); residual municipal solid waste (MSW), and vegetable, garden, and fruit waste (VGF). HTC experiments were performed at 150, 200 and 250 °C for 1 h using 10%, 20%, and 30% solid loadings of a fixed water mass. The effect of temperature and solid loading to the properties of biocoal and biochemical methane potential (BMP) of process waters are investigated. Results show that the behaviour of digestate during HTC is feedstock dependent and the hydrochar produced is a poor-quality solid fuel. The AGR digestate produced the greatest higher heating value (HHV) of 24 MJ/kg, however its biocoal properties are poor due to slagging and fouling propensities. The SS digestate process water produced the highest amount of biogas at 200 °C and 30% solid loading. This study concludes that solely treating digestate via HTC enhances biogas production and that hydrochar be investigated for its use as a soil amender.

scholarly journals Potential of biogas production from anaerobic co-digestion of fat, oil and grease waste and food waste

2018 ◽  
Vol 67 ◽  
pp. 02047 ◽  
Author(s):  
Reigina Sandriaty ◽  
Cindy Priadi ◽  
Septiana Kurnianingsih ◽  
Ayik Abdillah
Keyword(s):  
Anaerobic Digestion ◽  
Food Waste ◽  
Biogas Production ◽  
Potential Method ◽  
Methane Yield ◽  
Volatile Solid ◽  
Oil And Grease ◽  
Biochemical Methane Potential ◽  
Digestion Process ◽  
Methane Potential

The generation of fat, oil and grease (FOG) waste can be a nuisance hazard, but also a potential for resource recovery. FOG waste can be utilized as nutrient and energy source through anaerobic digestion which may increase methane yield but also increase presence of inhibitors. Using the biochemical methane potential method, this research is aimed to determine the effect of FOG waste in the co-digestion process of food waste (FW) to produce biogas. The research was conducted for 42 days at 37°C using FOG waste codigested with FW of 3 different volatile solid (VS) rasio which are 0.125, 0.3, and 0.5. The results showed that FOG waste combined with FW has a methane yield that may reach up to 485 ± 36.8 mL CH4/gr VS, the highest one produced by the 0.125 VS rasio mix. While the ratio of FOG waste with FW at 0.3 and 0.5 only produce 128 ± 195 and 4 ± 1.45 mL CH4/gr VS, respectively. The ratio of 0.125 also demonstrates the highest COD reduction of 56% compared to the other ratio which indicates the 0.125 FOG and FW ratio can be implemented to utilize FOG waste and increase methane yield during anaerobic digestion process.

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