Comparative life cycle assessment of aquifer thermal energy storage integrated with in-situ bioremediation of chlorinated volatile organic compounds
Comparative life cycle assessment of aquifer thermal energy storage integrated with in-situ bioremediation of chlorinated volatile organic compounds
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含水层热能储存与氯化挥发性有机化合物原位生物修复相结合的比较生命周期评估
DOI：
10.1021/acs.est.9b07020
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发表时间：
2020
影响因子：
11.4
通讯作者：
Rongliang Qiu
中科院分区：
文献类型：
--
作者：
Zhuobiao Ni;Yue Wang;Yafei Wang;Shaoqing Chen;Manxi Xie;Tim Grotenhuis;Rongliang Qiu
由于城市地区对可持续能源和环境质量的需求日益增加，含水层热能储存（ATES）和原位生物修复（ISB）的结合引起了人们的广泛关注，因为它可以提供综合贡献来满足这两种需求。然而，人们对ATES-ISB的总体环境影响知之甚少。因此，我们应用生命周期评估（LCA）来评估ATES-ISB的环境性能，这也是比较传统的加热和冷却系统加上ISB单独（CHC + ISB）。电力能源供应是环境影响的主要原因，ATES-ISB的影响占61.26%，CHC + ISB的影响占72.91%。具体来说，电力是负责超过95%的用水，全球变暖的潜力，酸化潜力，和呼吸无机物，而生产的生物介质的生物修复造成超过85%的生态和人类毒性的影响，在这两种情况下。ATES-ISB的总体环境影响比CHC + ISB小两倍。敏感性分析证实了电力消耗和电子供体生产的能源供应和生物修复的环境影响的重要性。因此，未来的研究和实际应用寻求ATES-ISB的环境性能的可能优化，建议更多地关注这两个基本要素，例如，电和电子供体，以及它们的相关参数。通过全面的生命周期评价，可以更好地描述ATES-ISB系统的关键因素以及未来优化研究的相关方向。
Due to the increasing need for sustainable energy and environmental quality in urban areas, the combination of aquifer thermal energy storage (ATES) and in situ bioremediation (ISB) has drawn much attention as it can deliver an integrated contribution to fulfill both demands. Yet, little is known about the overall environmental impacts of ATES–ISB. Hence, we applied a life-cycle assessment (LCA) to evaluate the environmental performance of ATES–ISB, which is also compared with the conventional heating and cooling system plus ISB alone (CHC + ISB). Energy supply via electricity is revealed as the primary cause of the environmental impacts, contributing 61.26% impacts of ATES–ISB and 72.91% impacts of CHC + ISB. Specifically, electricity is responsible for over 95% of water use, global warming potential, acidification potential, and respiratory inorganics, whereas the production of the biological medium for bioremediation causes more than 85% of the eco- and human toxicity impacts in both cases. The overall environmental impact of ATES–ISB is two times smaller than that of CHC + ISB. Sensitivity analysis confirms the importance of electricity consumption and electron donor production to the environmental impacts in both energy supply and bioremediation. Thus, future studies and practical applications seeking possible optimization of the environmental performances of ATES–ISB are recommended to focus more on these two essential elements, e.g., electricity and electron donor, and their related parameters. With the comprehensive LCA, insight is obtained for better characterizing the crucial factors as well as the relevant direction for future optimization research of the ATES–ISB system.