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Oxidative removal of stabilized landfill leachate by Fenton's process: process modeling, optimization & analysis of degraded products

机译:Fenton的过程氧化去除稳定的垃圾填埋液渗滤液:过程建模,优化和降解产品分析

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摘要

In this study, the stabilized landfill leachate which has a BOD : COD ratio of 0.045 was treated using Fenton's process. The effect of process parameters like reaction time, pH, dose of FeSO4 and dose of H2O2 was estimated using One Factor At a Time (OFAT) and the linear, interactive and quadratic effects between the factors were studied using Face Centered Central Composite Design (CCF). In the OFAT approach, reaction time: 5 minutes, pH: 3.0, dose of FeSO4: 30 mM, and dose of H2O2: 30 mM were optimized. In CCF, the statistically optimized model shows maximum removal of organic substances at an FeSO4 concentration of 14.44 mM, pH 3.0 and 29.12 mM of H2O2. The regression co-efficient R-2 = 0.9079, adj R-2 = 0.854 and adequate precision = 14.676. The degradation of organic substances was assessed by measuring the Chemical Oxygen Demand (COD). Total Organic Carbon (TOC) and Gas Chromatography-Mass Spectroscopy (GC-MS) were investigated for the sample corresponding to the maximum COD reduction.
机译:在这项研究中,具有BOD的稳定垃圾填埋液渗滤液:使用Fenton的方法处理0.045的COD比率。使用一个因子(OFAT)和使用面部中心的中央复合设计研究了一种因子(OFAT)和因子之间的线性,交互和二次效应,估计了处理参数等反应时间,pH,剂量的FeSO4和剂量的H 2 O 2的效果。使用面部中心的中央复合设计(CCF )。在方法中,反应时间:5分钟,pH:3.0,FeSO4:30mm的剂量,以及H 2 O 2:30mm的剂量。在CCF中,统计上优化的模型显示出在14.44mm,pH 3.0和29.12mm的H2O2的FESO 4浓度下最大的有机物质去除有机物质。回归共同高效R-2 = 0.9079,ADJ R-2 = 0.854,适当的精度= 14.676。通过测量化学需氧量(COD)来评估有机物质的降解。研究了总有机碳(TOC)和气相色谱 - 质谱(GC-MS),用于对应于最大COD减少的样品。

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  • 来源
    《RSC Advances》 |2020年第7期|共10页
  • 作者单位

    Kamaraj Coll Engn Sc Technol Dept Civil Engn Madurai Tamil Nadu India;

    PSNA Coll Engn &

    Technol Dept Civil Engn Dindugul Tamil Nadu India;

    Kamaraj Coll Engn &

    Technol Dept Biotechnol Ctr Res Madurai Tamil Nadu India;

    Indian Inst Technol Dept Biosci &

    Bioengn Gauhati Assam India;

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  • 正文语种 eng
  • 中图分类 化学;
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