抗钝化铝复合材料的球磨构建及其对单氯乙酸的脱氯机制

Monochloroacetic acid(MCA)is a typical persistent organic contaminant that has been used as normal organic chemical intermediate.The resulting high concentration MCA wastewater seriously polluted environment.Reductive dechlorination of halogenated contaminants by zero valent metal is a effective technology, but MCA has high activation energy of dechlorination, its reductive dechlorination needs more study..Based on our early research of dechlorination by Fe/Ni mechanical alloy material, this study intends to explore effective modification method of the zero valent aluminum to overcome the existing metal passivation problem and to achieve an metal composite fitting for alkaline solution. The relationship between material structure and reductive activity should be examined by changing the composition, compositing method,ratio and preparation parameters;The mechnism of activation and dechlorination could be in-depth explained through theories of materical defects,corrosion,and electrochemical hydrogenation - hydroevolution. In order to get efficient and persistent dechlorination performance, the key factors of solution (contents, pH value) will be analyzed. This study has a potential application prospect..The research aims to develop an anti-passivation zero valent aluminum composite for MCA actual wastewater treatment. The new modification idea will support new design idea and explore theoriety of aluminum application in the field of sewage treatment.

单氯乙酸（monochloroacetic acid，MCA）是典型难降解有机氯代污染物，作为基础有机化工中间体，由此产生大量高浓度MCA废水，对环境污染严重。金属还原脱氯是有机氯处理的有效技术，但MCA的脱氯活化能较高，其还原脱氯研究还亟待推进。.本研究拟在前期研究MCA还原脱氯Fe/Ni机械合金材料的基础上，开拓有效活化零价铝的修饰方法和制备方法，以克服现有金属钝化问题，并实现碱性适用的金属体系。通过改变材料组成、复合方式、配比及制备参数，考察复合材料的结构与还原活性关系；运用材料缺陷、腐蚀电化学、电化学析氢加氢等理论从深入解释材料活化与快速脱氯机理；对溶液组份、pH值等关键因素进行分析，以获得高效持久脱氯性能。本研究具有良好的应用前景。.本研究以开发难降解MCA实际废水处理的抗钝化零价铝为目的，新型活化修饰方法可为金属铝在实际难降解污水处理领域的开拓性应用提供新的设计思路及理论支撑。

单氯乙酸（monochloroacetic acid，MCA）是典型难降解有机氯代污染物，作为基础有机化工中间体，由此产生大量高浓度MCA 废水，对环境污染严重。金属还原脱氯是有机氯处理的有效技术，但MCA 的脱氯活化能较高，其还原脱氯研究还亟待推进。.本研究拟在前期研究机械合金材料脱氯的基础上，开拓新型、有效的金属还原脱氯材料，并研究其修饰方法和制备方法，以克服现有金属钝化问题，并实现碱性适用的金属体系。通过改变材料组成、复合方式、配比及制备参数，考察复合材料的结构与还原活性关系；运用材料缺陷、腐蚀电化学、电化学析氢加氢等理论从深入解释材料活化与快速脱氯机理；对溶液组份、pH值等关键因素进行分析，以获得高效持久脱氯性能。本研究具有良好的应用前景。.本研究以开发难降解MCA 实际废水处理的抗钝化金属材料为目的，新型活化修饰方法可为材料在实际难降解污水处理领域的开拓性应用提供新的设计思路及理论支撑。