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首页> 外文期刊>Environmental Science & Technology >Flows, Stock, and Emissions of Poly- and Perfluoroalkyl Substances in California Carpet in 2000-2030 under Different Scenarios
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Flows, Stock, and Emissions of Poly- and Perfluoroalkyl Substances in California Carpet in 2000-2030 under Different Scenarios

机译:2000 - 2013年在不同情景下,加利福尼亚地毯中的多氟烷基物质的流动,股票和排放

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摘要

In this study, we present a holistic analysis of the stock and emissions of poly- and perfluoroalkyl substances (FTAS) in California carpet in 2000-2030. Our high estimate is that, in 2017, the total PFAS accumulated in in-use carpet stock and landfilled carpet are ~60 and ~120 tonnes, respectively, and the resultant PFAS emissions are ~800 and ~100 kg, respectively. Among the three subclasses (side-chain polymers, PFAA, and nonpolymeric precursors), side-chain polymers dominate the in-use stock and landfill accumulation, while nonpolymeric precursors dominate the resultant emissions. Our low estimate is typically 8-15% of the high estimate and follows similar trends and subclass breakdowns as the high estimate. California's new Carpet Stewardship Regulations (24% recycling of end-of-life carpet) will reduce the landfilled PFAS by 6% (7 tonnes) at the cost of increasing the in-use stock by 2% (2 tonnes) in 2030. Aggressive PFAS phase-out by carpet manufacturers (i.e., reduce PFAS use by 15% annually starting 2020) could reduce the in-use PFAS stock by 50% by 2030, but its impact on the total landfilled PFAS is limited. The shift toward short-chain PFAS will also significantly reduce the in-use stock of long-chain PFAS in carpet by 2030 (only 25% of the total PFAS will be long-chain). Among the data gaps identified, a key one is the current area-based PFAS emission reporting (i.e., g PFAS emitted/area carpet/time), which leads to the counterintuitive result that reducing the PFAS use in carpet production has no impact on the PFAS emissions from in-use stock and landfills. Future technical studies should either confirm this or consider a mass-based unit (e.g., g PFAS emitted/g PFAS used/time) for better integration into regional substance flow analysis. Other noticeable data gaps include the lack of time-series data on emissions from the in-use stock and on leaching of side-chain polymers from landfills.
机译:在这项研究中,我们在2000 - 2013年在加州地毯中展示了对加利福尼亚地毯的储存和排放的整体分析。我们的高估计是,在2017年,在使用的地毯库存和填埋地毯中累积的总PFA分别为约60〜120吨,结果分别为800〜100千克。在三个亚类(侧链聚合物,PFAA和非聚合前体)中,侧链聚合物主导了使用的库存和垃圾填埋场积聚,而非聚合前体占据了所得排放。我们的低估计率通常为8-15%的高估计,并遵循类似的趋势和子类分类,作为高估计。加州的新地毯管理法规(24%的寿命终端地毯回收)将在2030年以2%(2吨)增加2%(2吨)的成本将填埋的PFA减少6%(7吨)。积极的PFAS由地毯制造商逐步淘汰(即降低PFAS使用15%的每年起始2020)可以将使用的PFAS库存减少50%到2030%,但其对总填埋的PFA的影响有限。向短链PFA的转变也将显着降低2030年在地毯上的使用长链PFA的使用库存(仅25%的PFA是长链)。在识别的数据差距中,一个关键是一个基于区域的PFA发射报告(即G PFA发射/区域地毯/时间),这导致了减少地毯生产中的PFAS使用的逆行结果对该地毯产生没有影响使用股票和垃圾填埋场的PFA排放。未来的技术研究应确认这一点或考虑基于群众的单位(例如,G PFAS发射/ G使用/时间/时间),以便更好地融入区域物质流动分析。其他明显的数据差距包括缺乏关于垃圾填埋场侧链聚合物的排放的时间序列数据。

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  • 来源
    《Environmental Science & Technology》 |2020年第11期|6908-6918|共11页
  • 作者单位

    Environmental Engineering Department Montana Tech Butte Montana 59701 United States;

    Key Lab of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen Fujian 361025 China University of Chinese Academy of Science Beijing 100084 China;

    Key Lab of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen Fujian 361021 China Xiamen Key Lab of Urban Metabolism Xiamen 361021 China;

    Department of Physics University of Notre Dame Notre Dame Indiana 46556 United States;

    Environmental Engineering Department Montana Tech Butte Montana 59701 United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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