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首页> 外文期刊>Journal of Environmental Science and Health >Microwave treatment of naphthenic acids in water
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Microwave treatment of naphthenic acids in water

机译：微波处理水中的环烷酸

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摘要

Naphthenic acids (NAs) are natural constituents of bitumen and crude oil. These compounds are concentrated as part of the oil sands process water (OSPW) during petroleum refining and separation from oil sands. NAs are considered among the major water contaminants in OSPW due to their toxicity and environmental recalcitrance. A laboratory scale microwave system was developed and experiments were conducted to determine the efficiency of NA degradation during microwave treatment. The effects of water source and quality (deionized lab water and river water) and of TiO_2 catalyst in the degradation process were also investigated. Degradation kinetic parameters for both total NAs and individual z-family were calculated. The microwave system degraded OSPW NAs and commercial Fluka NAs in river water in the presence of TiO_2 rapidly, producing half-life values of 3.32 and 3.61 hours, respectively. Toxicity assessments of the NA samples pre-and post-treatment indicated that the microwave system reduced overall toxicity of water containing Fluka NAs from high (5 min. IC_(50) v/v = 15.85%) to moderate (5 min. IC_(50) v/v = 36.45%) toxicity levels. However, a slight increase in toxicity was noted post-treatment in OSPW NAs.
机译：环烷酸（NAs）是沥青和原油的天然成分。这些化合物在石油精炼和从油砂分离过程中作为油砂工艺水（OSPW）的一部分浓缩。由于它们的毒性和对环境的不利影响，NAs被认为是OSPW中主要的水污染物之一。开发了实验室规模的微波系统，并进行了实验以确定微波处理过程中NA降解的效率。还研究了水源和质量（去离子实验室用水和河水）以及TiO_2催化剂在降解过程中的影响。计算了总NA和单个z家族的降解动力学参数。在TiO_2存在下，微波系统快速降解了河水中的OSPW NAs和商业Fluka NAs，其半衰期分别为3.32和3.61小时。预处理前后的NA样品的毒性评估表明，微波系统将含有Fluka NAs的水的总体毒性从高（5分钟IC_（50）v / v = 15.85％）降低到中度（5分钟IC_（ 50）v / v = 36.45％）毒性水平。然而，在OSPW NAs中进行治疗后发现毒性略有增加。

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  • 来源
    《Journal of Environmental Science and Health》 |2010年第10期|p.1240-1247|共8页
  • 作者

    SABYASACHI MISHRA; VENKATESH MEDA; AJAY K. DALAI; JOHN V. HEADLEY; KERRY M. PERU; DENA W. MCMARTIN;

  • 作者单位

    College of Agricultural Engineering & Post Harvest Technology, Central Agricultural University, Ranipool, Gangtok, Sikkim, India College of Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnCollege of Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5A9, Canada;

    rnCollege of Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnWater Science and Technology Directorate, Environment Canada, Saskatoon, Saskatchewan, Canada;

    rnWater Science and Technology Directorate, Environment Canada, Saskatoon, Saskatchewan, Canada;

    rnEnvironmental Systems Engineering, University of Regina, Regina, Saskatchewan, Canada;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    microwave; naphthenic acids; treatment; kinetics; toxicity;

    机译：微波;环烷酸;治疗;动力学;毒性;

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