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Bioenergy from crop residues: A regional analysis for heat and electricity applications in Ghana
Biomass & Bioenergy ( IF 6 ) Pub Date : 2020-08-05 , DOI: 10.1016/j.biombioe.2020.105640
Valentine Doe Azasi , Felix Offei , Francis Kemausuor , Lawrence Akpalu

The global campaign to minimise greenhouse gas emissions and reduce fossil fuel dependency has led to the consideration of crop residue as feedstock for various bioenergy technologies. In this study, the extent to which various crop residues in the ten administrative regions of Ghana can contribute to the specific heat and electricity demands of each region was assessed. The conversion of residues from 22 crops to briquettes, biomethane and bioethanol-based electricity were examined using resource modelling to determine their potential contribution to wood fuels, Liquefied Petroleum Gas (LPG) and electricity demand respectively. The results indicate that, the Eastern Region generated the highest amount of crop residues at 2.3 Mt, mainly from cassava stalks while the Greater Accra Region generated the least amount of crop residue from the ten regions at 52.3 kt. The conversion of selected crop residues to briquettes would contribute to 53.6% of the national wood fuel demand, with Eastern and Brong Ahafo Regions recording the highest individual contributions of 27.7 and 20.5% respectively. Biomethane would contribute to 11.7% of LPG demand in all the ten regions. Electricity generated from bioethanol would supplement 91.2% of the national electricity demand. Overall, the prospects are highest for the production of electricity from bioethanol produced from crop residue to support regional energy demands.



中文翻译:

作物残留产生的生物能源:加纳热电应用的区域分析

为最大程度地减少温室气体排放和减少对化石燃料的依赖而开展的全球运动导致人们考虑将作物残渣作为各种生物能源技术的原料。在这项研究中,评估了加纳十个行政区域的各种农作物残渣在多大程度上可以促进每个区域的特定热量和电力需求。使用资源模型检查了从22种农作物到煤饼,生物甲烷和生物乙醇基电力的残留转化,以确定它们分别对木质燃料,液化石油气(LPG)和电力需求的潜在贡献。结果表明,东部地区的农作物残留量最高,为2.3 Mt,主要来自木薯茎,而大阿克拉地区在52.3 kt的十个地区产生的农作物残留量最少。选定的农作物残余物转化为煤饼将占全国木材燃料需求的53.6%,其中东部和布隆阿哈福地区分别贡献最高,分别为27.7和20.5%。在所有十个地区中,生物甲烷将占液化石油气需求的11.7%。生物乙醇产生的电力将补充全国91.2%的电力需求。总体而言,用农作物残渣生产的生物乙醇生产电力以满足区域能源需求的前景最高。东部和布隆阿哈福地区的个人贡献最高,分别为27.7和20.5%。在所有十个地区中,生物甲烷将占液化石油气需求的11.7%。生物乙醇产生的电力将补充全国91.2%的电力需求。总体而言,用农作物残渣生产的生物乙醇生产电力以满足区域能源需求的前景最高。东部和布隆阿哈福地区的个人贡献最高,分别为27.7和20.5%。在所有十个地区中,生物甲烷将占液化石油气需求的11.7%。生物乙醇产生的电力将补充全国91.2%的电力需求。总体而言,用农作物残渣生产的生物乙醇生产电力以满足区域能源需求的前景最高。

更新日期:2020-08-05
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