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首页> 外文期刊>Environmental Science & Technology >Impact of Ozonation on Naphthenic Acids Speciation and Toxicity of Oil Sands Process-Affected Water to Vibrio fischeri and Mammalian Immune System
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Impact of Ozonation on Naphthenic Acids Speciation and Toxicity of Oil Sands Process-Affected Water to Vibrio fischeri and Mammalian Immune System

机译：臭氧化对油砂过程影响的环烷酸形态和水对费氏弧菌和哺乳动物免疫系统毒性的影响

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摘要

Oil sands process-affected voter (OSPW) is the water contained in tailings impoundment structures in oil sands operations. There are concerns about the environmental impacts of the release of OSPW because of its toxicity. In this study, ozonation followed by biodegradation was used to remediate OSPW. The impacts of the ozone process evolution on the naphthenic acids (NAs) speciation and acute toxicity were evaluated. Ion-mobility spectrometry (IMS) was used to preliminarily separate isomeric and homologous species. The results showed limited effects of the ozone reactor size on the treatment performance in terms of contaminant removal. In terms of NAs speciation, high reactivity of NAs with higher number of carbons and rings was only observed in a region of high reactivity (i.e., utilized ozone dose lower than 50 mg/L). It was also found that nearly 0.5 mg/L total NAs was oxidized per mg/L of utilized ozone dose, at utilized ozone doses lower than 50 mg/L. IMS showed that ozonation was able to degrade NAs, oxidized NAs, and sulfuritrogenated NAs. Complete removal of toxicity toward Vibrio fischeri was achieved after ozonation followed by 28-day biodegradation period. In vitro and in vivo assays indicated that ozonation reduced the OSPW toxicity to mice.
机译：受油砂过程影响的投票者（OSPW）是油砂作业中尾矿库房结构中所含的水。由于OSPW的毒性，对释放OSPW的环境影响存在担忧。在这项研究中，臭氧氧化然后生物降解被用来修复OSPW。评估了臭氧过程演变对环烷酸（NAs）形态和急性毒性的影响。离子迁移谱（IMS）用于初步分离异构体和同源物种。结果表明，就污染物去除而言，臭氧反应器尺寸对处理性能的影响有限。就NAs的形态而言，仅在高反应性的区域（即，使用的臭氧剂量低于50mg / L）中观察到具有更高碳和环数的NAs的高反应性。还发现，在低于50 mg / L的臭氧使用量下，每mg / L的臭氧使用量可氧化近0.5 mg / L的总NAs。 IMS显示，臭氧化能够降解NA，氧化的NA和硫/硝化的NA。在臭氧化之后28天的生物降解期之后，完全消除了对费氏弧菌的毒性。体外和体内试验表明，臭氧化作用降低了OSPW对小鼠的毒性。

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  • 来源
    《Environmental Science & Technology》 |2013年第12期|6518-6526|共9页
  • 作者

    Nan Wang; Pamela Chelme-Ayala; Leonidas Perez-Estrada; Erick Garcia-Garcia; Jonathan Pun; Jonathan W. Martin; Miodrag Belosevic; Mohamed Gamal El-Din;

  • 作者单位

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2, 3-093 Markin/CNRL Natural Resources Engineering Facility, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2;

    Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9;

    Department of Laboratory Medicine and Pathology, Division of Analytical and Environmental Toxicology, University of Alberta, Edmonton, Alberta, Canada, T6G 2G3;

    Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2W2;

  • 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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