Methane Production Potential from Apple Pomace, Cabbage Leaves, Pumpkin Residue and Walnut Husks

Czubaszek, Robert; Wysocka-Czubaszek, Agnieszka; Tyborowski, Rafał

doi:10.3390/app12126128

Cited by 21 publications

(11 citation statements)

References 85 publications

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“…A similar relationship can be observed for other biofuels obtained from agricultural raw materials [46]. In biogas production, one can strive to reduce the cost of the raw material and increase the efficiency of biogas from the raw material by using organic waste where available [47,48]. However, it is only profitable on the local scale, where there is no competition over the raw material and with low logistic costs [49,50].…”

Section: Factors Determining the Profitability Of Biogas Plantssupporting

confidence: 55%

Determinants of Return-on-Equity (ROE) of Biogas Plants Operating in Poland

et al. 2022

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Poland has a large potential for biogas production from agricultural sources and food waste. This potential is still poorly used. There are many reasons for this state of affairs. We can indicate both the policy of the state towards renewable energy sources (RES) with a small amount of energy from biogas contracted at auctions, investment risk, and especially low return on investment in the absence of investment support. An important reason is also the limited state budget. The purpose of this work was to determine the endogenous factors that determine ROE, the direction of the impact of these factors, as well as the strategy of biogas plants in shaping the ROE level. The DuPont model was used in the analysis of ROE changes. We used the deviation method to determine the impact of the various factors on ROE. Against the background of the energy sector in Poland, the value of ROE in the examined biogas plants should be considered satisfactory, and in 2020 it was, on average, 13.9%. The decrease from 17.2% in 2019 occurred despite the increase in energy prices and the increase in the net profit margin (NPM). It resulted from the reduction of ROE’s financial leverage through external capital. A high level of debt characterized the examined biogas plants, and the pursuit of risk reduction and debt reduction negatively impacts on ROE. This may indicate the need for state investment support at the plant construction stage or low-interest investment loans to develop biogas plants. In addition, using only price guarantees under the feed-in tariffs, with dynamic changes in costs, may bring the industry a relatively high investment risk compared to other RES, where the operational costs during the lifetime are low, as it is in PV or wind systems.

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Section: Factors Determining the Profitability Of Biogas Plantssupporting

confidence: 55%

Determinants of Return-on-Equity (ROE) of Biogas Plants Operating in Poland

et al. 2022

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“…Yan et al [27] reported cauliflower residues generated a methane yield of 249.61 mL/gVS. Czubaszek et al [28] found the highest methane yield of 297.81±0.65 L/kgVS during the anaerobic digestion of cabbage leaves. Compared to the previous literature, the theoretical methane yield obtained in this study is almost close to the experimental methane yield obtained by the anaerobic digestion of mustard residuals, with a yield difference of 4.27%.…”

Section: Correlation Between Cod Total Dilution Volume and Theoretica...mentioning

confidence: 99%

Theoretical Biochemical Methane Potential Generated by the Anaerobic Digestion of Mustard Green Residues in Different Dilution Volumes

Shitophyta,

Putri,

Salsabiella

et al. 2023

Pol. J. Environ. Stud.

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The green mustard residues can be converted into biogas through anaerobic digestion. In this study, different dilution volumes (1 L, 1.5 L, 2 L) were observed to determine the effect of dilution volumes on biogas yield. Three kinetic models (first-order, Fitzhugh, modified Gompertz model) were used to simulate the methane potential, kinetic constants, and lag phase time. The experiment was carried out in 5 L digesters at room temperature. The results showed that modified Gompertz is the best model for simulating the AD process. Dilution volume affected biogas production (p<0.05) with the highest biogas yield of 4372.58 mL/gVS (dilution volume of 2 L). The statistical analysis showed a significant correlation between the COD total, different dilution volumes and theoretical methane potential (p<0.05).

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“…One of the directions that makes it possible to increase the return on investment and operation of AD plants is the utilisation of organic waste [10]. Heavily polluted wastewater from the food industry [11], sewage sludge [12,13], waste from agriculture [14], the fruit and vegetable sector [15] and the meat industry [16], as well as the organic fraction of municipal waste [17] and many others [18][19][20][21] are excellent substrates in this process. Another way to increase economic efficiency is to use technologies and process units that increase the biodegradability of the substrates used, which has a positive effect on the quantity and qualitative composition of the biogas produced [22].…”

Section: Introductionmentioning

confidence: 99%

The Use of Hydrodynamic Cavitation to Improve the Anaerobic Digestion of Waste from Dairy Cattle Farming—From Laboratory Tests to Large-Scale Agricultural Biogas Plants

Dębowski,

Kazimierowicz,

Nowicka

et al. 2024

Energies

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There is a need to find methods to intensify the anaerobic digestion process. One possibility is the use of pretreatment techniques. Many laboratory tests confirm their effectiveness, but in most cases, there is no verification work carried out on industrial plants. A reliable and complete evaluation of new solutions can only be carried out in plants that reflect operating conditions at a higher readiness technological level. This has a direct impact on the scientific value and, above all, on the high application value of innovative technologies. The aim of our research carried out under laboratory conditions and on a large scale was to determine the technological and energy efficiency of the use of hydrodynamic cavitation in the pretreatment of a waste mixture from dairy farms. It has been shown that hydrodynamic cavitation significantly increases the concentration of organic compounds in the dissolved phase. In the most effective variants, the increase in the content of these indicators was over 90% for both COD and TOC. The degree of solubilisation achieved was 49 ± 2.6% for COD and almost 52 ± 4.4% for TOC. Under laboratory conditions, the highest effects of anaerobic digestion were achieved after 10 min of pretreatment. The amount of biogas was, on average, 367 ± 18 mL/gCOD, and the amount of methane was 233 ± 13 mL/gCOD. Further large-scale optimisation trials showed that after 8 min of hydrodynamic cavitation, the biogas yield was 327 ± 8 L/kgCOD with a CH4 content of 62.9 ± 1.9%. With this variant, the net energy yield was 66.4 ± 2.6 kWh/day, a value that was 13.9% higher than the original variant with 10 min of disintegration and 3.1% higher than the variant without pretreatment.

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Methane Production Potential from Apple Pomace, Cabbage Leaves, Pumpkin Residue and Walnut Husks

Cited by 21 publications

References 85 publications

Determinants of Return-on-Equity (ROE) of Biogas Plants Operating in Poland

Determinants of Return-on-Equity (ROE) of Biogas Plants Operating in Poland

Theoretical Biochemical Methane Potential Generated by the Anaerobic Digestion of Mustard Green Residues in Different Dilution Volumes

The Use of Hydrodynamic Cavitation to Improve the Anaerobic Digestion of Waste from Dairy Cattle Farming—From Laboratory Tests to Large-Scale Agricultural Biogas Plants

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