Power generation from food waste bio-compressed natural gas: Economic feasibility

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews Pub Date : 2024-11-15 DOI:10.1016/j.rser.2024.115110

Dan Cudjoe , Bangzhu Zhu

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Abstract

Wasted food accounts for around a quarter of the world's food supply. About 40–60 % of China's municipal solid waste is food waste. The increased global and domestic food waste has economic, social, and environmental consequences requiring adequate attention. Biogas from food waste could be upgraded into bio-CNG (bio-compressed natural gas). The bio-CNG has high methane content, which makes it a potential electricity generation resource. A comprehensive understanding of the economic viability of waste-to-energy initiatives is critical for policymakers and prospective investors. This study investigates the electricity generation potential of bio-CNG from food waste in Jiangsu Province, China. The economic viability of bio-CNG to electricity projects is also assessed. The major findings show that the total amount of food waste (109.1 Mt) generated from 2004 to 2020 could produce 162.3 Mm³ bio-CNG. The volume of bio-CNG yield has 1265.7 GWh power generation potential. On average, the electricity generation potential could contribute 1.7 % to the annual electricity consumption in the province. According to the financial analysis, the project is viable and lucrative in the province. The sensitivity analysis was conducted to determine the impact of changes in certain critical factors on the project's performance. This study provides scientific strategies for optimal investment in bio-CNG to electricity projects.

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利用厨余生物压缩天然气发电：经济可行性

浪费的粮食约占全球粮食供应的四分之一。中国城市固体废弃物中约有 40-60% 是食物垃圾。全球和国内食物垃圾的增加对经济、社会和环境造成了影响，需要引起足够的重视。厨余垃圾产生的沼气可以升级为生物压缩天然气（Bio-CNG）。生物压缩天然气的甲烷含量高，是一种潜在的发电资源。全面了解垃圾发电项目的经济可行性对于政策制定者和潜在投资者来说至关重要。本研究调查了中国江苏省利用厨余垃圾生产生物压缩天然气的发电潜力。同时还评估了生物-液化天然气发电项目的经济可行性。主要研究结果表明，2004 年至 2020 年产生的厨余垃圾总量（1.091 亿吨）可生产 1.623 亿立方米生物-CNG。生物-压缩天然气的产量具有 1265.7 千兆瓦时的发电潜力。平均而言，发电潜力可占该省年用电量的 1.7%。根据财务分析，该项目在该省是可行且有利可图的。为确定某些关键因素的变化对项目绩效的影响，进行了敏感性分析。本研究为生物-压缩天然气发电项目的最佳投资提供了科学策略。

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来源期刊

Renewable and Sustainable Energy Reviews 工程技术-能源与燃料

CiteScore

31.20

自引率

5.70%

发文量

1055

审稿时长

62 days

期刊介绍： The mission of Renewable and Sustainable Energy Reviews is to disseminate the most compelling and pertinent critical insights in renewable and sustainable energy, fostering collaboration among the research community, private sector, and policy and decision makers. The journal aims to exchange challenges, solutions, innovative concepts, and technologies, contributing to sustainable development, the transition to a low-carbon future, and the attainment of emissions targets outlined by the United Nations Framework Convention on Climate Change. Renewable and Sustainable Energy Reviews publishes a diverse range of content, including review papers, original research, case studies, and analyses of new technologies, all featuring a substantial review component such as critique, comparison, or analysis. Introducing a distinctive paper type, Expert Insights, the journal presents commissioned mini-reviews authored by field leaders, addressing topics of significant interest. Case studies undergo consideration only if they showcase the work's applicability to other regions or contribute valuable insights to the broader field of renewable and sustainable energy. Notably, a bibliographic or literature review lacking critical analysis is deemed unsuitable for publication.