The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds
This paper aims to explore both experimental and modeling anaerobic digestion (AD) processes as innovative methods for managing the substantial quantities of spent coffee grounds (SCG) generated in Algeria, transforming them into valuable renewable energy sources (biogas/methane). AD of SCG, while p...
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2025-01-01
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| author | Siham Sayoud Kerroum Derbal Antonio Panico Ludovico Pontoni Massimiliano Fabbricino Francesco Pirozzi Abderrezzaq Benalia |
| author_facet | Siham Sayoud Kerroum Derbal Antonio Panico Ludovico Pontoni Massimiliano Fabbricino Francesco Pirozzi Abderrezzaq Benalia |
| author_sort | Siham Sayoud |
| collection | DOAJ |
| description | This paper aims to explore both experimental and modeling anaerobic digestion (AD) processes as innovative methods for managing the substantial quantities of spent coffee grounds (SCG) generated in Algeria, transforming them into valuable renewable energy sources (biogas/methane). AD of SCG, while promising, is hindered by its complex lignocellulosic structure, which poses a significant challenge. This study investigates the efficacy of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) pretreatment in addressing this issue, with a particular focus on enhancing biogas and methane production. The AD of SCG was conducted over a 46-day period, and the impact of H<sub>2</sub>O<sub>2</sub> pretreatment was evaluated using laboratory-scale batch anaerobic reactors. Four different concentrations of H<sub>2</sub>O<sub>2</sub> (0.5, 1, 2, and 4% H<sub>2</sub>O<sub>2</sub> <i>w</i>/<i>w</i>) were studied in mesophilic conditions (37 ± 2) for 24 h at room temperature, providing basic data on biogas and methane production. The results showed a significant increase in soluble oxygen demand (SCOD) and total sugar solubilization in the range of 555.96–713.02% and 748.48–817.75%, respectively. The optimal pretreatment was found to be 4% H<sub>2</sub>O<sub>2</sub> <i>w</i>/<i>w</i> resulting in 16.28% and 16.93% improvements in biogas and methane yield over the untreated SCG. Further, while previous research has established oxidative pretreatment efficacy, this study uniquely combines the empirical analysis of H<sub>2</sub>O<sub>2</sub> pretreatment with a detailed kinetic modeling approach using the modified Gompertz (MG) and logistic function (LF) models to estimate kinetic parameters and determine the accuracy of fit. The MG model showed the most accurate prediction, thus making the present investigation a contribution to understanding the performance of the AD system under oxidative pretreatment and designing and scaling up new systems with predictability. These findings highlight the potential of H<sub>2</sub>O<sub>2</sub>-pretreated SCG as a more efficient and readily available resource for sustainable waste management and renewable energy production. |
| format | Article |
| id | doaj-art-5e4f0acdfaf245e2a104f1c84398eef4 |
| institution | DOAJ |
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| publishDate | 2025-01-01 |
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| spelling | doaj-art-5e4f0acdfaf245e2a104f1c84398eef42025-08-20T03:12:05ZengMDPI AGFermentation2311-56372025-01-011126010.3390/fermentation11020060The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee GroundsSiham Sayoud0Kerroum Derbal1Antonio Panico2Ludovico Pontoni3Massimiliano Fabbricino4Francesco Pirozzi5Abderrezzaq Benalia6Laboratory LIPE, Faculty Process Engineering, University of Constantine 3, Ali Mendjeli Nouvelle Ville, Constantine 25000, AlgeriaLaboratory of Process Engineering for Sustainable Development and Health Products (GPDDPS), Department of Process Engineering, National Polytechnic School of Constantine, Constantine 2500, AlgeriaDepartment of Engineering, University of Campania L. Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania L. Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania L. Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania L. Vanvitelli, 81031 Aversa, ItalyLaboratory of Process Engineering for Sustainable Development and Health Products (GPDDPS), Department of Process Engineering, National Polytechnic School of Constantine, Constantine 2500, AlgeriaThis paper aims to explore both experimental and modeling anaerobic digestion (AD) processes as innovative methods for managing the substantial quantities of spent coffee grounds (SCG) generated in Algeria, transforming them into valuable renewable energy sources (biogas/methane). AD of SCG, while promising, is hindered by its complex lignocellulosic structure, which poses a significant challenge. This study investigates the efficacy of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) pretreatment in addressing this issue, with a particular focus on enhancing biogas and methane production. The AD of SCG was conducted over a 46-day period, and the impact of H<sub>2</sub>O<sub>2</sub> pretreatment was evaluated using laboratory-scale batch anaerobic reactors. Four different concentrations of H<sub>2</sub>O<sub>2</sub> (0.5, 1, 2, and 4% H<sub>2</sub>O<sub>2</sub> <i>w</i>/<i>w</i>) were studied in mesophilic conditions (37 ± 2) for 24 h at room temperature, providing basic data on biogas and methane production. The results showed a significant increase in soluble oxygen demand (SCOD) and total sugar solubilization in the range of 555.96–713.02% and 748.48–817.75%, respectively. The optimal pretreatment was found to be 4% H<sub>2</sub>O<sub>2</sub> <i>w</i>/<i>w</i> resulting in 16.28% and 16.93% improvements in biogas and methane yield over the untreated SCG. Further, while previous research has established oxidative pretreatment efficacy, this study uniquely combines the empirical analysis of H<sub>2</sub>O<sub>2</sub> pretreatment with a detailed kinetic modeling approach using the modified Gompertz (MG) and logistic function (LF) models to estimate kinetic parameters and determine the accuracy of fit. The MG model showed the most accurate prediction, thus making the present investigation a contribution to understanding the performance of the AD system under oxidative pretreatment and designing and scaling up new systems with predictability. These findings highlight the potential of H<sub>2</sub>O<sub>2</sub>-pretreated SCG as a more efficient and readily available resource for sustainable waste management and renewable energy production.https://www.mdpi.com/2311-5637/11/2/60biogasmethaneanaerobic digestionbatch mesophilicH<sub>2</sub>O<sub>2</sub> |
| spellingShingle | Siham Sayoud Kerroum Derbal Antonio Panico Ludovico Pontoni Massimiliano Fabbricino Francesco Pirozzi Abderrezzaq Benalia The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds Fermentation biogas methane anaerobic digestion batch mesophilic H<sub>2</sub>O<sub>2</sub> |
| title | The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds |
| title_full | The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds |
| title_fullStr | The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds |
| title_full_unstemmed | The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds |
| title_short | The Effect of Hydrogen Peroxide on Biogas and Methane Produced from Batch Mesophilic Anaerobic Digestion of Spent Coffee Grounds |
| title_sort | effect of hydrogen peroxide on biogas and methane produced from batch mesophilic anaerobic digestion of spent coffee grounds |
| topic | biogas methane anaerobic digestion batch mesophilic H<sub>2</sub>O<sub>2</sub> |
| url | https://www.mdpi.com/2311-5637/11/2/60 |
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