UMTP and Department of Chemistry, University of Beira Interior, 6201-001 Covilhã, Portugal.
J Hazard Mater. 2012 Jan 15;199-200:82-7. doi: 10.1016/j.jhazmat.2011.10.074. Epub 2011 Oct 30.
In the present study, the anodic oxidation of a leachate from an intermunicipal sanitary landfill was evaluated using a boron-doped diamond anode as a possible post-treatment to the biological one, in order to diminish the remaining bio-refractory organic matter. The influence of the dilution of the leachate sample and the applied current density on the performance of electrochemical oxidation was investigated. For the different assays performed, a comparison between the theoretical kinetic model for organic mineralization, proposed in the literature, and experimental data was done and the best correspondences were attained at lower applied current density for sample without dilution and at higher applied current density for the more diluted sample. However, the energetic most favourable treatment is attained for sample without dilution at very low current density. The DOC/COD ratio was also analysed and apparently, the mineralization of the organic matter improves with the dilution of the leachate samples.
在本研究中，采用掺硼金刚石阳极对市际卫生填埋场渗滤液进行阳极氧化，作为生物处理的后处理方法，以去除剩余的生物难降解有机物。考察了渗滤液样品稀释度和施加电流密度对电化学氧化性能的影响。对于不同的实验，对文献中提出的有机矿化理论动力学模型与实验数据进行了比较，在较低的施加电流密度下对未稀释的样品和在较高的施加电流密度下对稀释较大的样品得出了较好的对应关系。然而，在非常低的电流密度下，对未稀释的样品进行处理，能量效率最高。还分析了 DOC/COD 比值，显然，随着渗滤液样品的稀释，有机物的矿化程度提高。
