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Can bioenergy carbon capture and storage aggravate global water crisis?
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-22 , DOI: 10.1016/j.scitotenv.2020.136856 Bin Hu 1 , Yilun Zhang 2 , Yi Li 3 , Yanguo Teng 4 , Weifeng Yue 4
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-22 , DOI: 10.1016/j.scitotenv.2020.136856 Bin Hu 1 , Yilun Zhang 2 , Yi Li 3 , Yanguo Teng 4 , Weifeng Yue 4
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Bioenergy carbon capture and storage (BECCS) is an effective option for mitigation of greenhouse gas (GHG) emissions. Nevertheless, there is barely serious debate about whether its implementation can possibly jeopardize the global water resources security. Here, we provided an assessment of biomass-based Substitute Natural Gas (BioSNG) production combined with CCS, a promising BECCS technology, in terms of global water resources security, with a focus on the growth of two typical second-generation bioenergy crops: switchgrass and miscanthus. A bottom-up analysis approach was applied in this paper to calculating water consumption for BECCS and estimating water quality deterioration caused by increasing fertilizer and pesticide application. The results indicated that water usage of BECCS was equal to adding 12.86%-16.64% (switchgrass) and 17.59%-26.06% (miscanthus) additional water stress on global available water resources at 2100. Additional N fertilizer application in 2100 would be equal to over 84%, 55% and 42% for both switchgrass and miscanthus under three CCS capture efficiency scenarios, respectively, comparing to such global scale in 2012. Additional phosphate fertilizer adding to global annual available water at 2100 were 0.004-0.008 mg L-1 (switchgrass) and 0.003-0.006 mg L-1 (miscanthus), respectively. The secondary environmental hazards, such as N2O emission, would offset GHG emission mitigation by BECCS. Meanwhile, the enrichment and leaching of pesticide residues increased the risk of groundwater contamination. This study revealed water consumption and contamination issues caused by BECCS cannot be neglected. Thus, additional studies of accurate land-use models in global scale and advanced technology for biofuel extraction are needed in the future.
中文翻译：
生物能碳捕获和储存会加剧全球水危机吗？
生物能源碳捕集与封存（BECCS）是缓解温室气体（GHG）排放的有效选择。但是，关于实施该计划是否可能危及全球水资源安全，几乎没有严肃的辩论。在这里，我们从全球水资源安全的角度评估了基于生物质的替代天然气（BioSNG）生产与CCS（一种很有前途的BECCS技术）相结合的方法，重点是两种典型的第二代生物能源作物：柳枝switch的生长和麦加。本文采用了一种自下而上的分析方法来计算BECCS的耗水量，并估算因肥料和农药施用量增加而引起的水质恶化。结果表明，BECCS的用水量等于分别增加了12.86％-16.64％（柳枝switch）和17.59％-26。在2100年，全球可用水资源的水分压力增加了06％（芒草）。在3种CCS捕集效率情景下，2100年的柳枝and和桔梗的氮肥施用量分别相当于84％，55％和42％以上。到2012年达到这样的全球规模。在2100年时，全球年度可用水中增加的磷肥分别为0.004-0.008 mg L-1（柳枝switch）和0.003-0.006 mg L-1（芒草）。N2O排放等次要环境危害将抵消BECCS减轻温室气体排放的影响。同时，农药残留的富集和浸出增加了地下水污染的风险。这项研究表明，不能忽略由BECCS引起的耗水量和污染问题。从而，
更新日期：2020-01-22
中文翻译：
生物能碳捕获和储存会加剧全球水危机吗？
生物能源碳捕集与封存（BECCS）是缓解温室气体（GHG）排放的有效选择。但是，关于实施该计划是否可能危及全球水资源安全，几乎没有严肃的辩论。在这里，我们从全球水资源安全的角度评估了基于生物质的替代天然气（BioSNG）生产与CCS（一种很有前途的BECCS技术）相结合的方法，重点是两种典型的第二代生物能源作物：柳枝switch的生长和麦加。本文采用了一种自下而上的分析方法来计算BECCS的耗水量，并估算因肥料和农药施用量增加而引起的水质恶化。结果表明，BECCS的用水量等于分别增加了12.86％-16.64％（柳枝switch）和17.59％-26。在2100年，全球可用水资源的水分压力增加了06％（芒草）。在3种CCS捕集效率情景下，2100年的柳枝and和桔梗的氮肥施用量分别相当于84％，55％和42％以上。到2012年达到这样的全球规模。在2100年时，全球年度可用水中增加的磷肥分别为0.004-0.008 mg L-1（柳枝switch）和0.003-0.006 mg L-1（芒草）。N2O排放等次要环境危害将抵消BECCS减轻温室气体排放的影响。同时，农药残留的富集和浸出增加了地下水污染的风险。这项研究表明，不能忽略由BECCS引起的耗水量和污染问题。从而，
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