The use of microalgal sourced biodiesel to help underground mines transition to battery electric vehicles

IF 0.7 Q4 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Journal of Sustainable Mining Pub Date : 2022-01-08 DOI:10.46873/2300-3960.1327
Corey A Laamanen, K. Moreau, S. Desjardins, Shannon H. McLean, J. A. Scott
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Abstract

The widespread use of fossil fuel sourced diesel underground has various associated health and environmental hazards, and additional energy demand and costs associated with necessary ventilation. One way to reduce these impacts is by utilizing a biodiesel-blend, which generates lower levels of harmful emissions from underground equipment and can be produced regionally, reducing the impact of transportation. Furthermore, this would help allow use of existing machinery during transition towards more widespread electrification underground. Therefore, the concept of an integrated supply and use chain within the mining industry is examined based on biodiesel from acidophilic photosynthetic microalgae cultivated using CO2 in smelter off-gas. A life cycle assessment (LCA) was conducted to compare the environmental impacts of production, transportation, and end-use of fossil fuel sourced diesel to biodiesel-blended fuel across four underground metal ore mine sites (Canada, Poland, Zambia, and Australia). The outcomes from assessing four key environmental impact potentials (global warming, eutrophication, acidification and human toxicity) demonstrate the advantages of using biodiesel-blends. The integration of biodiesel resulted in changes from ¡22.5 to þ22.8% (global warming), from ¡18.9 to þ26.3% (acidification), from ¡6.1 to þ27.3% (eutrophication), and from ¡21.0 to ¡3.6% (human toxicity). The results showed reduction across all potentials for two mines and reduction in human toxicity potential for all sites.
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利用微藻来源的生物柴油帮助地下矿山过渡到电池电动汽车
化石燃料来源的柴油在地下的广泛使用带来了各种相关的健康和环境危害,以及额外的能源需求和必要的通风费用。减少这些影响的一种方法是使用生物柴油混合物,这种混合物产生的有害排放物水平较低,并且可以在区域内生产,从而减少了运输的影响。此外,这将有助于在向更广泛的地下电气化过渡期间使用现有机械。因此,基于使用冶炼厂废气中的二氧化碳培养的嗜酸性光合微藻的生物柴油,研究了采矿业内综合供应和使用链的概念。在四个地下金属矿区(加拿大、波兰、赞比亚和澳大利亚)进行了生命周期评估(LCA),以比较化石燃料来源的柴油和生物柴油混合燃料的生产、运输和最终使用对环境的影响。评估四个关键的环境影响潜力(全球变暖、富营养化、酸化和人体毒性)的结果证明了使用生物柴油混合物的优势。生物柴油的加入导致了从±22.5到±22.8%(全球变暖),从±18.9到±26.3%(酸化),从±6.1到±27.3%(富营养化),从±21.0到±3.6%(人体毒性)的变化。结果显示,两个矿井的所有潜在毒性都有所降低,所有地点的人体毒性都有所降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Sustainable Mining
Journal of Sustainable Mining Earth and Planetary Sciences-Geology
CiteScore
1.50
自引率
10.00%
发文量
20
审稿时长
16 weeks
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