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首页> 外文期刊>Journal of Hazardous Materials >Degradation of p-nitrophenol using acoustic cavitation and Fenton chemistry
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Degradation of p-nitrophenol using acoustic cavitation and Fenton chemistry

机译：利用声空化和Fenton化学降解对硝基苯酚

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摘要

Due to increasing human requirements, newer chemical species are being observed in the effluent streams with higher loadings such that efficacy of conventional treatment techniques is decreased and a combination of advanced oxidation processes is implemented for enhanced treatment ability and better energy efficiency. In the present work, the efficacy of combination of sonochemistry and Fenton chemistry has been investigated for wastewater treatment considering p-nitrophenol as model pollutant at pilot scale operation. Degradation of p-nitrophenol has been investigated under various operating conditions based on the use of ultrasound, Fenton process, ultrasound and H_2O_2, ultrasound and Fe, ultrasound and FeSO_4, ultrasound and conventional Fenton process and ultrasound and advanced Fenton process. Two different initial concentrations of 0.5 and 1% of p-nitrophenol have been used for the experiments. In conventional Fenton and advanced Fenton process, two loadings of FeSO_4 and Fe powder 0.5 and 1 g/l and three ratios of FeSO_4:H_2O_2 and Fe:H_2O_2 (1:5,1:7.5 and 1:10) were investigated respectively. In all the systems investigated, maximum extent of degradation (66.4%) was observed for 0.5% p-nitrophenol concentration (w/v) using a combination of ultrasound and advanced Fenton process. The novelty of the work is in terms of investigating the efficacies of combined advanced oxidation processes based on the use of cavitation and Fenton chemistry at pilot scale operation and tries to establish the missing design related information for large scale operation of wastewater treatment.
机译：由于人类需求的增加，在具有更高负荷的废水中观察到了新的化学物质，从而降低了常规处理技术的功效，并且实施了先进的氧化工艺以增强处理能力和提高能源效率。在目前的工作中，已经研究了声化学和Fenton化学相结合的效果，以对硝基苯酚为模型污染物，在中试规模运行中处理废水。基于超声，Fenton工艺，超声和H_2O_2，超声和Fe，超声和FeSO_4，超声和常规Fenton工艺以及超声和先进的Fenton工艺，已经在各种操作条件下研究了对硝基苯酚的降解。对硝基苯酚的两种不同初始浓度分别为0.5和1％。在传统的Fenton工艺和先进的Fenton工艺中，分别研究了FeSO_4和Fe粉的两种负载量分别为0.5和1 g / l，以及FeSO_4：H_2O_2和Fe：H_2O_2的三种比例（1：5、1：7.5和1:10）。在所有研究的系统中，结合使用超声波和先进的Fenton工艺，观察到0.5％对硝基苯酚浓度（w / v）的最大降解程度（66.4％）。这项工作的新颖性在于研究基于气蚀和Fenton化学在中试规模操作基础上的联合高级氧化工艺的效率，并试图为大规模废水处理建立缺少的设计相关信息。

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  • 来源
    《Journal of Hazardous Materials》 |2010年第3期|517-522|共6页
  • 作者

    Amey A. Pradhan; Parag R. Gogate;

  • 作者单位

    Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India;

    Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India;

  • 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

    wastewater treatment; p-nitrophenol; cavitation; fenton chemistry;

    机译：废水处理;对硝基苯酚;空化芬顿化学;

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