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首页> 外文期刊>Journal of Environmental Science and Health >Evaluation of a novel 'semi-solid' Fenton process: Case study on a kinetic model of o-nitroaniline degradation in hazardous solid waste
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Evaluation of a novel 'semi-solid' Fenton process: Case study on a kinetic model of o-nitroaniline degradation in hazardous solid waste

机译：新型“半固体”芬顿工艺的评估：危险固体废物中邻硝基苯胺降解动力学模型的案例研究

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摘要

A 'semi-solid' Fenton process (SSFP), in which the Fenton process (FP) takes place in a matrix with a low liquid-to-solid ratio (≤ 5:1), was conducted on the degradation of o-nitroaniline (ONA) in hazardous solid waste. Based on the assumption of a first order reaction between ONA and the hydroxyl radical (-OH), an SSFP kinetic model was developed to accurately describe the kinetics of ONA degradation and to quantitatively investigate the effect of operating conditions. Half-life prediction model was also proposed and compared with the half-life calculated from pseudo first order equation to prove the effect of operating conditions. It showed that the degradation of ONA proceeded rapidly at pH 3.5. The kinetic rate constant, k, for ONA degradation increased with the initial ferrous ion concentration, but decreased with the liquid-to-solid ratio. With respect to the lowest residual ONA concentration, the optimal ferrous ion concentration and liquid-to-solid ratio were 0.062 mol/kg dry weight and 1.8, respectively.
机译：对邻硝基苯胺的降解进行了“半固体”芬顿法（SSFP），其中芬顿法（FP）在液固比低（≤5：1）的基质中进行（ONA）中的有害固体废物。基于ONA与羟基自由基（-OH）之间发生一阶反应的假设，开发了SSFP动力学模型以准确描述ONA降解的动力学并定量研究操作条件的影响。提出了半衰期预测模型，并与伪一阶方程计算的半衰期进行了比较，以证明工况的影响。结果表明，在pH 3.5时，ONA的降解迅速进行。 ONA降解的动力学速率常数k随初始亚铁离子浓度增加而增加，但随液固比降低。关于最低残留ONA浓度，最佳亚铁离子浓度和液固比分别为0.062 mol / kg干重和1.8。

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  • 来源
    《Journal of Environmental Science and Health》 |2009年第11期|1127-1135|共9页
  • 作者

    LI-FANG HU; YU-YANG LONG; HUA-JUN FENG; DONG-SHENG SHEN;

  • 作者单位

    Department of Environmental Engineering, Zhejiang University, Hangzhou, China;

    Department of Environmental Engineering, Zhejiang University, Hangzhou, China;

    College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China;

    Department of Environmental Engineering, Zhejiang University, Hangzhou, China College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China;

  • 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

    semi-solid; fenton; kinetics; hazardous solid waste;

    机译：半固体芬顿动力学;危险固体废物;

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