A waste to energy technology for Enrichment of biomethane generation: A review on operating parameters, types of biodigesters, solar assisted heating systems, socio economic benefits and challenges

Kalaiselvan, N.; Glivin, Godwin; Bakthavatsalam, A.K.; Mariappan, V.; Premalatha, M.; Raveendran, P. Saji; Jayaraj, S.; Sekhar, S. Joseph

doi:10.1016/j.chemosphere.2021.133486

Cited by 37 publications

(8 citation statements)

References 179 publications

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“…This performance can be attributed to the acidification of the anodic chamber, which can favor the hydrolysis of organic matter whereby organic polymers can be biologically decomposed into smaller molecules (such as carbohydrates, lipids, and proteins) that are able to cross the cell membrane. These smaller molecules can then be transformed into sugars, long-chain fatty acids, and amino acids [ 35 ]. Furthermore, this low pH can decrease or even inhibit the growth of other microorganisms, such as methanogens, and promote the development of microorganisms resistant to the low pH.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

Borja-Maldonado

Zavala

2023

Bioengineering

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In this study, graphite, graphene, and hydrophilic-treated graphene electrodes were evaluated in a dual-chamber microbial fuel cell (DC-MFC). Free-oxygen conditions were promoted in anodic and cathodic chambers. Hydrochloric acid at 0.1 M and pH 1.1 was used as a catholyte, in addition to deionized water in the cathodic chamber. Domestic wastewater was used as a substrate, and a DuPontTM Nafion 117 membrane was used as a proton exchange membrane. The maximum power density of 32.07 mW·m−2 was obtained using hydrophilic-treated graphene electrodes and hydrochloric acid as catholyte. This power density was 1.4-fold and 32-fold greater than that of graphene (22.15 mW·m−2) and graphite (1.02 mW·m−2), respectively, under the same operational conditions. In addition, the maximum organic matter removal efficiencies of 69.8% and 75.5% were obtained using hydrophilic-treated graphene electrodes, for hydrochloric acid catholyte and deionized water, respectively. Therefore, the results suggest that the use of hydrophilic-treated graphene functioning as electrodes in DC-MFCs, and hydrochloric acid as a catholyte, favored power density when domestic wastewater is degraded. This opens up new possibilities for improving DC-MFC performance through the selection of suitable new electrode materials and catholytes.

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Section: Resultsmentioning

confidence: 99%

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

Borja-Maldonado

Zavala

2023

Bioengineering

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“…Horses produce from 18 to 25 kg of manure per day depending on feed, bedding and cleaning systems [33] and can be an important source of income for some entrepreneurs, as it can be used in the production of biogas by extracting lignocellulosic fibers [32]. During anaerobic digestion, lignocellulosic biomass is converted into biogas [34], and biogas produced from manure processing mainly contains methane, which is a much stronger greenhouse gas than carbon dioxide.…”

Section: Renewable Energy Based On Horse Manure Processingmentioning

confidence: 99%

Exploring Precursors of Renewable Energy Portfolio Diversification Using TPB

Lupoae,

Radu,

Capatina

et al. 2023

Energies

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Renewable energy is produced from natural sources that can regenerate quickly, such as the sun, wind, water, biomass and the earth’s heat. This implies that the resources used do not have a significant negative impact on the environment, which aligns with current concerns for protecting the planet and ecosystems. This study aims to explore the behavior of entrepreneurs regarding the processing of resources that can be introduced in the circular economy and the development of the renewable energy portfolio by transforming horse manure into bioenergy. Employing Structural Equation Modeling (PLS-SEM) and based on an extensive dataset comprising 104 responses from entrepreneurs engaged in or aspiring to participate in the renewable energy sector, this research reveals a noteworthy finding. Contrary to prevailing expectations, it demonstrates that the perceived interest in safeguarding future resources and the environment among these entrepreneurs is currently low. This study not only enriches the understanding of entrepreneurial behavior within the renewable energy domain but also extends the Theory of Planned Behavior. In doing so, it underscores the critical significance of sustainability factors as drivers of future business development and underscores the need for comprehensive policy initiatives that compel greater commitment to renewable energy and circular economy practices.

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“…Therefore, to reduce the negative impact of fossil fuels, renewable energy options have emerged as the top global energy supplement. One such emerging renewable energy source is the conversion of waste to energy which is poised to leverage the global fossil fuels issues [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of biomass anaerobic digestion for high biogas yield and CO2 mineralization

Mokraoui

Halilu

Hashim

et al. 2023

Mater Renew Sustain Energy

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Bioenergy is one of several renewable energy options derived from biomass that can help satisfy our energy needs. Anaerobic digestion is a viable method for producing bioenergy in the form of biogas from biomass. The anaerobic digestion process is challenged with low biogas recovery, and low-quality effluent or CO2 emission, which contribute to environmental pollution and the carbon footprint in the atmosphere. Computational process modelling and simulation can provide realistic information for dealing with the technological challenges involved with anaerobic digestion. In this study, modeling and simulation of the simplified anaerobic digestion process were done using SuperPro Designer software fed with biomass feedstock containing carbohydrates, proteins, and fats, as well as yeast, at 37 °C mesophilic temperature. The anaerobic digestion process yielded 89.655% of CH4 and 10.345% of CO2 and confirmed that the carbohydrate feedstock produces more CH4 composition in the biogas. Mineralization of CO2 using MgO yielded 0.23% MgCO3, consuming > 99% of the CO2 produced during the anaerobic digestion process. Environmental impact assessment of the effluent discharge yielded 0.142 kg Slds/L volatile solid with 6.01% COD reduction per batch of the anaerobic digestion process in an anaerobic digester with 90% (1.925 kg/batch) feedstock dosage. The data indicate that single-batch effluent cannot be discharged into the environment, hence indicating the possible recycling for multiple anaerobic digestion processing. The results are a significant guide for the realistic scalable production of high-quality biogas for bioenergy application, CO2 mineralization, and environmental remediation.

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A waste to energy technology for Enrichment of biomethane generation: A review on operating parameters, types of biodigesters, solar assisted heating systems, socio economic benefits and challenges

Cited by 37 publications

References 179 publications

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

Exploring Precursors of Renewable Energy Portfolio Diversification Using TPB

Modeling and simulation of biomass anaerobic digestion for high biogas yield and CO2 mineralization

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