Electrochemical oxidation pretreatment for enhanced methane potential from landfill leachate in anaerobic co-digestion process: Performance, Gompertz model, and energy assessment

Pasalari, Hasan; Esrafili, Ali; Rezaee, Abbas; Gholami, Mitra

doi:10.1016/j.cej.2021.130046

Cited by 37 publications

(28 citation statements)

References 59 publications

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“…The methane yield experimental data obtained in the BMP tests were used to determine the energy output by using Eq. (3) [12]: where E 0 is the energy output in (kJ/g VS removed ), P CH4 is the cumulative methane production after digestion time (m 3 ), Ɛ is the lowest heating value for methane (35,800 kJ/m 3 CH 4 ), λ m is the energy conversion factor of methane (0.9), ( 2)…”

Section: Energy Outputmentioning

confidence: 99%

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Performance and kinetic evaluation of the anaerobic digestion of olive pomace derived from a novel manufacturing process based on an olive cold-pressing system: influence of the fruit ripening level

Fernández-Rodríguez

Cubero-Cardoso

Lama-Calvente

et al. 2022

Biomass Conv. Bioref.

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The aim of the present research was to investigate the influence of the application of a novel cold-pressing system in olive oil manufacturing on the characteristics of olive pomace (OP) and on its valorization by anaerobic digestion (AD). Green olives and olives in veraison, both from the Picual variety, were used with the objective of assessing the effect of ripening level on the performance of the AD processes. The AD processes of these OPs were assessed in biochemical methane potential (BMP) tests. The maximum methane yield (327 ± 5 mL CH4/g VS) and biodegradability value (90.8%) were found for the OP derived from green olives without cold-pressing, which showed the highest soluble COD (113 g O2/L) and the lowest total phenolic concentration (9 g gallic acid/L). The first-order and Transference Function (TF) kinetic models were employed to evaluate the variation in methane production with time and to obtain the kinetic parameters of the anaerobic processes of the four OPs tested. The kinetic constant from the first-order model, k, did not show significant differences for the four OPs tested and ranged between 0.23 and 0.27 day−1. The TF revealed that the values for the maximum methane production rate (Rmax) were slightly higher for the OPs derived from green olives compared to those obtained from olives in veraison. For the green olives, the cold-pressing system caused a decrease in the value of Rmax from 87 ± 7 to 73 ± 6 mL CH4/(g VS·d).

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Section: Energy Outputmentioning

confidence: 99%

“…The energy output was determined from experimental BMP data from these assays by applying Eq. ( 3) [12]. The energy yield or viability of the process is a factor of ultimate importance in scaling up the anaerobic digestion process.…”

Section: Energy Assessmentmentioning

confidence: 99%

Performance and kinetic evaluation of the anaerobic digestion of olive pomace derived from a novel manufacturing process based on an olive cold-pressing system: influence of the fruit ripening level

Fernández-Rodríguez

Cubero-Cardoso

Lama-Calvente

et al. 2022

Biomass Conv. Bioref.

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“…For dromedary wastes, the energy output was 10.1 kJ g −1 VS removed and 11.8 kJ g −1 VS removed for trampled and raw dromedary dungs, respectively. Energy output values from 9.43 to 25.5 kJ g −1 VS removed were reported by Pasalari et al [26] in the AD of landfill leachate after electrochemical oxidation pre-treatments. The values obtained in the present experiments were near the values previously reported.…”

Section: Energy Outputmentioning

confidence: 51%

“…The methane yields experimental data obtained in the BMP tests was used to determine the energy output by using Eq. 3 [26]:…”

Section: Energy Outputmentioning

confidence: 99%

“…These values indicated the high carbon and the low mineral content of the substrates, being balanced substrates for the AD process [27]. The substrates nitrogen content was also considered optimal for the AD process since the C/N ratio of all the substrates studied was within the range of 20-30, although other authors established a more restrictive ratio, placing the most optimal C/N ratio for the AD process between 25 and 30 [20][21][22][23][24][25][26][27][28]. The C/N content of the dungs used in these experiments were 26.8 ± 5.5 and 23.6 ± 0.9 for the llama dung (raw and trampled, respectively) and 22.2 ± 0.6 and 23.7 ± 0.7 for the dromedary dung substrates (raw and trampled, respectively).…”

Section: Physicochemical Characteristics Of the Feedstockmentioning

confidence: 99%

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Evaluation of batch mesophilic anaerobic digestion of raw and trampled llama and dromedary dungs: methane potential and kinetic study

Fernández-Rodríguez

Mancilla-Leytón

Lama-Calvente

et al. 2022

Biomass Conv. Bioref.

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This research was carried out with the aim to evaluate the anaerobic digestion (AD) of llama and dromedary dungs (both untreated and trampled) in batch mode at mesophilic temperature (35 °C). The biochemical methane potential (BMP) tests with an inoculum to substrate ratio of 2:1 (as volatile solids (VS)) were carried out. The methane yield from trampled llama dung (333.0 mL CH4 g−1 VSadded) was considerably higher than for raw llama, raw and trampled dromedary dungs (185.9, 228.4, 222.9 mL CH4 g−1 VSadded, respectively). Therefore, trampled llama dung was found to be the best substrate for methane production due to its high content of volatile solids as well as its high nitrogen content (2.1%) and more appropriate C/N ratio (23.6) for AD. The experimental data was found to be in accordance with both first-order kinetic and transference function mathematical models, when evaluating the experimental methane production against time. By applying the first-order kinetic model, the hydrolysis rate constants, kh, were found to be 19% and 11% higher for trampled dungs in comparison with the raw dung of dromedary and llama, respectively. In addition, the maximum methane production rate (Rm) derived from the transference function model for trampled llama dung (22.0 mL CH4 g−1 VS d−1) was 83.3%, 24.4% and 22.9% higher than those obtained for raw llama manure and for raw and trampled dromedary dungs, respectively.

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Integration of Biogas Production from Wastewater as Value Generation in Biorefineries

Balbino

Sánchez-Muñoz²,

Yaverino-Gutiérrez³

et al. 2023

Biorefinery for Water and Wastewater Treatment

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Electrochemical oxidation pretreatment for enhanced methane potential from landfill leachate in anaerobic co-digestion process: Performance, Gompertz model, and energy assessment

Cited by 37 publications

References 59 publications

Performance and kinetic evaluation of the anaerobic digestion of olive pomace derived from a novel manufacturing process based on an olive cold-pressing system: influence of the fruit ripening level

Performance and kinetic evaluation of the anaerobic digestion of olive pomace derived from a novel manufacturing process based on an olive cold-pressing system: influence of the fruit ripening level

Evaluation of batch mesophilic anaerobic digestion of raw and trampled llama and dromedary dungs: methane potential and kinetic study

Integration of Biogas Production from Wastewater as Value Generation in Biorefineries

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