Life cycle assessment of food waste-based biogas generation

Xu, Changqing; Shi, Wenxiao; Hong, Jinglan; Zhang, Fangfang; Chen, Wei

doi:10.1016/j.rser.2015.04.164

Cited by 130 publications

(49 citation statements)

References 22 publications

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“…The latter study equally reiterated that not a single management system performed the best in all of the impact categories. The relevance of recycling and recovery of energy and materials included in the EOL management scenarios were also addressed by Xu et al [35] focusing on biogas from food wastes. Similar to the results depicted in this study, the results presented by Xu et al [35] equally indicated that the environmental benefits achieved in the overall treatment processes are pivoted on the utilization and recovery of the generated energy.…”

Section: Comparison Of the Analyzed Eol Management Scenariosmentioning

confidence: 99%

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

et al. 2017

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Abstract:The environmental performance of industrial anaerobic digestion (AD), pyrolysis, and integrated system (AD sequence with pyrolysis) on food waste treatment were evaluated using life cycle assessment. The integrated treatment system indicated similar environmental benefits to AD with the highest benefits in climate change and water depletion in addition to the increased energy generation potential and the production of valuable products (biochar and bio-oil). Pyrolysis results illustrated higher impact across water, fossil fuel, and mineral depletion, although still providing a better option than conventional landfilling of food waste. The dewatering phase in the AD process accounted for 70% of the treatment impact while the pre-treatment of the food waste was responsible for the main burden in the pyrolysis process. The study indicated that the three treatment options of food waste management are environmentally more favorable than the conventional landfilling of the wastes.

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Section: Comparison Of the Analyzed Eol Management Scenariosmentioning

confidence: 99%

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

et al. 2017

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“…Nevertheless, the practice has been generally continued [45], and is also a concern in Guangzhou as it was highlighted during the interview study. So the question remains if there can be ways to safely and efficiently use food waste as animal feed and avoid grain use (for a few related studies, see: [84][85][86]), or it is better to divert them to biogas production and use the energy and the digestate (as biofertilizer). This point is also related to the fact that Guangzhou and its surrounding regions are highly urbanized, meaning that it can be challenging to establish efficient biofertilizer solutions in cooperation with agriculture, as it may require special technical, organizational, and legal arrangements.…”

Section: Concluding Discussionmentioning

confidence: 99%

“…This was partly due to their assumptions that 5% of the produced biogas is inevitably leaked during production, and that the produced digestate cannot be used but landfilled-leading to more CH 4 emissions. In another study, Xu et al [84] compared three scenarios for food waste treatment in China: landfilling, producing biogas from a mixture of food waste and sewage sludge, or producing biogas just from food waste. This study excluded digestate treatment and application from the scope of the study.…”

Section: Biogas Potential and Climate Performancementioning

confidence: 99%

Biogas Potential for Improved Sustainability in Guangzhou, China—A Study Focusing on Food Waste on Xiaoguwei Island

et al. 2019

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As a result of rapid development in China and the growth of megacities, large amounts of organic wastes are generated within relatively small areas. Part of these wastes can be used to produce biogas, not only to reduce waste-related problems, but also to provide renewable energy, recycle nutrients, and lower greenhouse gases and air polluting emissions. This article is focused on the conditions for biogas solutions in Guangzhou. It is based on a transdisciplinary project that integrates several approaches, for example, literature studies and lab analysis of food waste to estimate the food waste potential, interviews to learn about the socio-technical context and conditions, and life-cycle assessment to investigate the performance of different waste management scenarios involving biogas production. Xiaoguwei Island, with a population of about 250,000 people, was chosen as the area of study. The results show that there are significant food waste potentials on the island, and that all studied scenarios could contribute to a net reduction of greenhouse gas emissions. Several socio-technical barriers were identified, but it is expected that the forthcoming regulatory changes help to overcome some of them.

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“…[16] add that to there be better results it is advisable to have a sorting plant in place, for it allows considering both organic and inorganic waste for energy recovery and Ref. [34] affirms that optimizing the efficiency of electricity consumption is an effective way to reduce the environmental impacts resulting from waste treatment via AD. On their turn, Ref.…”

Section: Review Highlights: What High Impact Studies On Lca Of Electrmentioning

confidence: 98%

Life cycle assessment of electricity from biogas: A systematic literature review

Salvador

Barros

Rosário

et al. 2018

Env Prog and Sustain Energy

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Cleaner energy sources have been one increasing research topic in electricity generation. In that regard, (organic) waste of production processes can be object of anaerobic digestion, generating biogas; it can environmentally benefit by means of waste treatment (and consequent avoided environmental impacts) and electricity production. Additionally, the life cycle assessment (LCA) is the most comprehensive tool for environmental assessment. Therefore, the present study aims to conduct a systematic literature review of high impact research on LCA of electricity from biogas to investigate trends in this body of literature. To that end, the Methodi Ordinatio was applied to the raw portfolio to identify the most relevant, high impact, studies in the area. EndNote and VOSviewer were used, respectively, for reference management and clustering topics and researchers. The results show the main trends in the referred body of literature, possible LCA‐biogas‐electricity nexus, as well as the main researchers conducting studies on the topic and what their results draw on. Yet, it can be seen the main institutions housing high impact studies on the approached themes and their locations. Furthermore, this study gives an overview on the use of LCA of electricity generation from biogas and sheds light on possibilities for future research. Future opportunities for biogas should be drawn in terms of circular economy practices. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13133, 2019

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Life cycle assessment of food waste-based biogas generation

Cited by 130 publications

References 22 publications

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

Biogas Potential for Improved Sustainability in Guangzhou, China—A Study Focusing on Food Waste on Xiaoguwei Island

Life cycle assessment of electricity from biogas: A systematic literature review

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