Potential, environmental, and socio-economic assessment of biogas production in Ethiopia: The case of Amhara regional state

Gabisa, Elias W.; Gheewala, Shabbir H.

doi:10.1016/j.biombioe.2019.02.003

Cited by 44 publications

(33 citation statements)

References 27 publications

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“…The energy sector continues to be predominantly biomass‐based, with 88% of the population lacking access to electricity and 90% of rural households depending on biomass as their primary cooking fuel (Gabisa & Gheewala, 2019). This limits the role of electrification in the enhancement of the quality of life and stimulates the economy at a broader level for the local community.…”

Section: Resultsmentioning

confidence: 99%

Local community perceptions toward livelihood and water–energy–food nexus: A perspective on food security

Wolde

Wei

Wang

et al. 2020

Food and Energy Security

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While water–energy–food (WEF) nexus is a major livelihood sources for local community, its security issues grow continually and there is limited information on how nexus resource management is effective at delivering livelihoods and food security. These difficulties are related to the lack of local community knowledge of the use and exploitation of water, energy, and food resources; this limited awareness leads to trade‐offs, especially in local and marginalized areas. On the basis of data collected from a local community through a survey‐based approach, this study examines local community perception of nexus resources and their contribution to livelihoods. The results indicate that community perceptions of nexus resources can be understood through social, natural, economic, human, physical, and environmental livelihood indicators. According to our findings, the perception of nexus resources is based on the benefits of individual resources rather than their interlinkages. This could be the result of community perceptions of a particular nexus resource from three nexus sector, that is, food. Food is the center of nexus resources for the community in the study area. This indicates, that there is a missing link between cross‐sectorial resource utilization and management, and full‐scale adoption of the WEF nexus to enhance living conditions. Our findings suggest that there is a low understanding of WEF nexus resource use and management, and the livelihood benefit of individual nexus resources is the primary focus in the studied community. From these results, we recommend more action to be taken by the government and other stakeholders to improve the local community perception of nexus resources for their livelihoods.

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Section: Resultsmentioning

confidence: 99%

Local community perceptions toward livelihood and water–energy–food nexus: A perspective on food security

Wolde

Wei

Wang

et al. 2020

Food and Energy Security

View full text Add to dashboard Cite

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“…Garfí et al [31] evaluated the installation of small-size digesters for biogas production in Colombian farms: a potential environmental impact reduction up to 80% is associated with manure handling, fuel and fertilizer because of the biogas production. The same concept was demonstrated-through an environmental analysis-for Ethiopia by Gabisa et al [32] and for Bangladesh by Ali et al [33]. More recent and general reviews on LCA of agro-biogas are also available in literature [34,35].…”

Section: Introductionmentioning

confidence: 81%

Life Cycle Assessment of a Biogas-Fed Solid Oxide Fuel Cell (SOFC) Integrated in a Wastewater Treatment Plant

et al. 2019

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This work assesses the environmental impacts of an industrial-scale Solid Oxide Fuel Cell (SOFC) plant fed by sewage biogas locally available from a Waste Water Treatment Plant (WWTP). Three alternative scenarios for biogas exploitation have been investigated and real data from an existing integrated SOFC-WWTP have been retrieved: the first one (Scenario 1) is the current scenario, where biogas is exploited in a boiler for thermal-energy-only production, while the second one is related to the installation of an efficient SOFC-based cogeneration system (Scenario 2). A thermal energy conservation opportunity that foresees the use of a dynamic machine for sludge pre-thickening enhancement is also investigated as a third scenario (Scenario 3). The life cycle impact assessment (LCIA) has shown that producing a substantial share of electrical energy (around 25%) via biogas-fed SOFC cogeneration modules can reduce the environmental burden associated to WWTP operations in five out of the seven impact categories that have been analyzed in this work. A further reduction of impacts, particularly concerning global warming potential and primary energy demand, is possible by the decrease of the thermal request of the digester, thus making the system independent from natural gas. In both Scenarios 2 and 3, primary energy and CO2 emissions embodied in the manufacture and maintenance of the cogeneration system are neutralized by operational savings in less than one year.

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“…For years, people have been increasingly aware of the need to protect the environment, reduce quantities of waste, and limit the consumption of fossil fuels . The high level of carbon dioxide emission to the environment and its consequence such as global warming call for the implementation of alternative sources of energy . Over the recent years, the production of waste, including municipal solid waste, has increased.…”

Section: Introductionmentioning

confidence: 99%

“…Over the recent years, the production of waste, including municipal solid waste, has increased. Despite the enormous global potential of biogas production, currently widespread solutions such as direct application of livestock manure on fields and open‐fire combustion of organic biomass, for example, straw, grass, and crop residues and agricultural waste, are contributing to significant emission to the atmosphere . In addition, industrial production entails the consumption of large amounts of fuels used to power industrial plants and facilities.…”

Section: Introductionmentioning

confidence: 99%

Intensification of biogas production using various technologies: A review

et al. 2020

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Summary Anaerobic digestion (AD) is an organic matter conversion technology which offers a wide range of options for production of biogas from organic biomass, providing an excellent opportunity to convert abundant bioresources into safe, eco‐friendly, renewable energy. Important factors in the process of AD are the biodiversity of microorganisms, chemical load of oxygen demand, and content of water and total solids. A challenge for the future is to find technologies that will maximally enhance biogas production and to find pathways for biogas to supersede well‐established technologies and practices in the contemporary heavily fossil fuel‐based energy system. Current studies on technologies of biogas production indicate a number of possibilities of using appropriate biological and physicochemical additives, like added enzymes or fruit pomace, as well as immobilizing microorganisms on biofilters. Anaerobic biorefinery is an emerging concept that generates not only bioenergy but also high‐value biochemical products from the same feedstock. This study is a review of articles describing the intensification of biogas production by using various technologies.

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Potential, environmental, and socio-economic assessment of biogas production in Ethiopia: The case of Amhara regional state

Cited by 44 publications

References 27 publications

Local community perceptions toward livelihood and water–energy–food nexus: A perspective on food security

Local community perceptions toward livelihood and water–energy–food nexus: A perspective on food security

Life Cycle Assessment of a Biogas-Fed Solid Oxide Fuel Cell (SOFC) Integrated in a Wastewater Treatment Plant

Intensification of biogas production using various technologies: A review

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