Energy generation from palm oil mill effluent: A life cycle cost-benefit analysis and policy insights

Energy generation from palm oil mill effluent: A life cycle cost-benefit analysis and policy insights
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利用棕榈油厂废水发电:生命周期成本效益分析和政策见解

DOI:
10.1016/j.rser.2021.111990
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发表时间:
2022
影响因子:
15.9
通讯作者:
Sharvini S
Sharvini S
中科院分区:
工程技术1区
文献类型:
--
作者:
Sharvini S

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马来西亚的可再生能源政策不包括从废物中生产,包括从棕榈油厂的废水中产生沼气。本文将生命周期成本效益分析(LCCBA)与层次分析法(AHP)相结合,对技术在生命周期内的成本效益进行了新的认识,并在此基础上,请专家对不同的选择进行排名,以提高政策。结果表明,连续搅拌槽反应器的LCC值为63万美元/年,而盖湖生物沼气池的LCC值为55万美元/年。在成本效益方面,连续搅拌槽式反应器的净现值为0.46万美元/年,投资回报率为10.11%,投资回收期为9.9年,高于盖湖式生物消化池系统的净现值为0.22万美元/年,投资回报率为7.79%,投资回收期为12.8年。因此,与有盖泻湖生物消化系统相比,连续搅拌槽式反应器系统在经济上更为可行。在使用AHP向专家提供这些信息时,出现了三个排名最高的政策选项:i)提供详细的环境指南,ii)标准化沼气安装技术指南,以及iii)使用衬里覆盖露天池塘壁。基于这项研究的经济见解和政策机会可用于在马来西亚和全球考虑沼气厂项目的多种情况下为政策决策提供信息。
Malaysia's renewable energy policies do not cover production from waste, including the generation of biogas from palm oil mill effluent. This paper combines life cycle cost-benefit analysis (LCCBA) and the analytical hierarchy process (AHP) to provide new insights into costs and benefits of technologies over the life cycles, and on the basis of this information, asks experts to rank different options to enhance policy. The results show that the continuous stirred tank reactor has a higher LCC of 0.63 Million USD/year, compared to a LCC value of 0.55 Million USD/year for the covered lagoon bio-digester. In terms of cost-benefit, the continuous stirred tank reactor has a higher net present value of 0.46 Million USD/year, higher return on investment of 10.11% and a shorter payback period of 9.9 years compared to the covered lagoon bio-digester system, which has a net present value of 0.22 Million USD/year, return on investment of 7.79% and a payback period of 12.8 years. The continuous stirred tank reactor system therefore emerges as more economically feasible compared to the covered lagoon bio-digester system. On providing this information to experts using AHP, the three top ranked policy options emerged as: i) providing detailed environmental guidelines, ii) standardising technical guidelines for biogas installation and iii) covering the open pond wall using lining. Economic insights and policy opportunities based on this research can be used to inform policy decision making in multiple contexts where biogas plant projects are under consideration, in both Malaysia and globally.
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