Effect of substrate ratio on biogas yield for anaerobic co-digestion of fruit vegetable waste &amp; sugarcane bagasse

Vats, Neelam; Khan, Abid Ali; Ahmad, Kafeel

doi:10.1016/j.eti.2019.01.003

Cited by 41 publications

(19 citation statements)

References 25 publications

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“…Equation ( 5) was further compared with conceptual models where the individual fractions of plant components are given different biodegradability values, considering their properties. The equations depart from an overall equation assigning different biodegradability properties to cellulose (C i ), hemicellulose (H i ), and the cell solubles (CS i ), as shown in Equation (7).…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, crops and agroresidues are interesting co-digestion materials supplementing waste materials of inferior energy quality, such as animal manure, allowing us to increase the energy output per unit reactor volume [5,6]. In addition, the AD potentials from fruit 2 of 23 and vegetable waste has also been analyzed, considering its biogas yield [7] and its use as single AD component [8].…”

Section: Introductionmentioning

confidence: 99%

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New Insights on the Estimation of the Anaerobic Biodegradability of Plant Material: Identifying Valuable Plants for Sustainable Energy Production

et al. 2020

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Based on fifteen European plant species, a statistical model for the estimation of the anaerobic biodegradability of plant material was developed. We show that this new approach represents an accurate and cost-effective method to identify valuable energy plants for sustainable energy production. In particular, anaerobic biodegradability (Bo) of lignocellulosic material was empirically found to be related to the amount of cellulose plus lignin, as analytically assessed by the van Soest method, i.e., the acid detergent fiber (ADF) value. Apart from being theoretically meaningful, the ADF-based empirical model requires the least effort compared to the other four proposed conceptual models proposed, as individual fractions of cellulose, hemicellulose, and lignin do not need to be assessed, which also enhances the predictive accuracy of the model’s estimation. The model’s results showed great predictability power, allowing us to identify interesting crops for sustainable crop rotations. Finally, the model was used to predict Bo of 114 European plant samples that had been previously characterized by means of the van Soest method.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Insights on the Estimation of the Anaerobic Biodegradability of Plant Material: Identifying Valuable Plants for Sustainable Energy Production

et al. 2020

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“…sugar bagasse (SB), and easily biodegradable waste, i.e. fruit vegetable waste (FVW), at a ratio 70% FVW-30% SB allowed for increasing the kinetic constant from 0.0023 days -1 (100% SB) to 0.022 days -1 (70% FVW-30% SB) (Vats et al, 2019). This increase is much higher than that observed in the present work when the OMSW (k=0.17 days -1, for 100% OMSW) was codigested with D. salina at a ratio (95% OMSW-5% D. salina) (k=0.19 days -1 ).…”

Section: Discussionmentioning

confidence: 99%

Evolution of control parameters in biochemical methane potential tests of olive mill solid waste (OMSW), thermal pre-treated OMSW, and its co-digestion with Dunaliella salina

et al. 2020

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The aim of the present work was to compare the mesophilic anaerobic digestion of untreated olive mill solid waste (OMSW), soft hydrothermal pre-treated OMSW (SHP OMSW) and a co-digestion mixture of 95% OMSW and 5% microalga Dunaliella salina (Co-OMSW). During the co-digestion experiment, the volatile fatty acid accumulation decreased in comparison with that obtained for OMSW and SHP OMSW, reducing the slight inhibition observed during the OMSW and SHP OMSW experiments. Final values of methane yield of 380±1 mL CH4 g -1 VSadded for the OMSW, 424±2 mL CH4 g -1 VSadded for the SHP OMSW and 491±1 mL CH4 g -1 VSadded for the co-OMSW were determined. Two mathematical models, first-order kinetics and modified Gompertz model, were employed to fit the experimental data with the aim of elucidating the anaerobic biodegradation and obtain the kinetic constants. Both models allowed for adequately fitting the experimental results of methane production with time. The kinetic constant, k, of the first-order model increased by 12% for the Co-OMSW compared with the values achieved for OMSW and SHP OMSW. The modified Gompertz model revealed that the maximum methane production rate, Rm, for the Co-OMSW and SHP OMSW increased by 34.7% and 10.3% compared to the value obtained for OMSW.

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“…Modified Gompertz model [27][28][29] equation was used for kinetic modelling. Equation (1) was fitted to experimental methane production data.…”

Section: Methane Production Modellingmentioning

confidence: 99%

Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp with Cow Manure to Boost the Performance of the Process: The Effect of Manure Proportion

Gómez-Quiroga

Aboudi

Fernández-Güelfo³

et al. 2020

Water

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Sugar beet by-products are a lignocellulosic waste generated from sugar beet industry during the sugar production process and stand out for their high carbon content. Moreover, cow manure (CM) is hugely produced in rural areas and livestock industry, which requires proper disposal. Anaerobic digestion of such organic wastes has shown to be a suitable technology for these wastes valorization and bioenergy production. In this context, the biomethane production from the anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and CM was investigated in this study. Four mixtures (0:100, 50:50, 75:25, and 90:10) of cow manure and sugar beet by-products were evaluated for methane generation by thermophilic batch anaerobic co-digestion assays. The results showed the highest methane production was observed in mixtures with 75% of CM (159.5 mL CH4/g VolatileSolids added). Nevertheless, the hydrolysis was inhibited by volatile fatty acids accumulation in the 0:100 mixture, which refers to the assay without CM addition. The modified Gompertz model was used to fit the experimental results of methane productions and the results of the modeling show a good fit between the estimated and the observed data.

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Effect of substrate ratio on biogas yield for anaerobic co-digestion of fruit vegetable waste & sugarcane bagasse

Cited by 41 publications

References 25 publications

New Insights on the Estimation of the Anaerobic Biodegradability of Plant Material: Identifying Valuable Plants for Sustainable Energy Production

New Insights on the Estimation of the Anaerobic Biodegradability of Plant Material: Identifying Valuable Plants for Sustainable Energy Production

Evolution of control parameters in biochemical methane potential tests of olive mill solid waste (OMSW), thermal pre-treated OMSW, and its co-digestion with Dunaliella salina

Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp with Cow Manure to Boost the Performance of the Process: The Effect of Manure Proportion

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