多孔Fe-C@CNTs纳米结构球团的制备及对焦化废水的降解机理研究

项目名称： 多孔Fe-C@CNTs纳米结构球团的制备及对焦化废水的降解机理研究

项目编号： No.51274084

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 郝素菊

作者单位： 河北联合大学

项目金额： 80万元

中文摘要： 铁炭内电解法是处理难降解废水的一种低廉而有效的方法，然而在使用过程中会发生锈结而失效。其主要原因是由于微电极电偶对电荷转移的受限，阳极氧化溶解与阴极还原的发生局域于有限空间，造成金属氧化物沉淀包裹，阻隔了界面污染物的吸附与降解反应的进行。我们拟采用直接还原法构筑高效铁炭原电池- - 多孔Fe-C@CNTs纳米结构球团，这种特殊结构的球团由活性炭、海绵铁与碳纳米管组成，能够有效地解决铁炭内电解法处理废水过程中的电子传递、传质和极化等问题。详细研究影响制备多孔Fe-C@CNTs纳米结构球团的各种因素，优化制备工艺参数。深入研究多孔Fe-C@CNTs纳米结构球团对焦化废水的降解机理，建立多孔Fe-C@CNTs纳米结构球团物理结构、电化学性能与焦化废水中污染物降解之间的内在关系。本项目的研究，不仅为铁炭内电解法降解废水提供一种高效新材料，并且为其在焦化废水处理方面的工业应用奠定坚实基础。

中文关键词： 铁炭内电解；焦化废水；降解机理；多孔Fe-C@CNTs纳米结构球团；电化学腐蚀

英文摘要： Iron-carbon internal electrolysis method is an effective and low cost way for treating wastewater, but it will generate rust connection which leads failure. The main reason is that microelectrode galvanic limit the charge transfer. Aanodic oxidation dissolution and cathodic reduction occurred in the limited space, wraped by metal oxide intercepted the interface adsorption of pollutants and degradation reaction. We intend to build high efficient iron-carbon primary batteries - pourous Fe-C@CNTs nanostructured pellets by direct reduction method. This special structure pellets consist of activated carbon, sponge iron and carbon nanotubes, can effectively solve the problem such as electron transfer, mass transfer and polarization during treating wastewater by iron-carbon internal electrolysis. We will study a variety of factors which affect preparation of pourous Fe-C@CNTs nanostructured pellets in order to optimize the preparation process parameters. We will research the degradation mechanism of coking wastewater by the pourous Fe-C@CNTs nanostructured pellets, to establish intrinsic relationship between the physical structure, electrochemical performance and degradation of pollutants in coking wastewater. The results not only provide an efficient new material for treating wastewater by iron-carbon internal electro

英文关键词： Iron-carbon Internal Electrolysis；coking wastewater；degradation mechanism；porous Fe-C@CNTs nanostructured pellets；electrochemical corrosion