高压放电等离子体协同载钛活性炭纤维去除水中典型除草剂

Herbicide was detected in many rivers and lakes because of its long-term and large-scale use. The problem of typical herbicide pollution became more and more serious, atrazine and diuron were two kinds of the typical representative herbicides. Synergistic adsorption and degradation of typical herbicide (atrazine and diuron) by high voltage discharge plasma coupled with Ti-loaded activated carbon fiber were conducted in the present project. The purpose of this project was to clarify the relationship between the characteristics of Ti-loaded activated carbon fiber and typical herbicide (atrazine and diuron) adsorption efficiency and degradation efficiency respectively, reveal the adsorption mechanism, synergistic degradation mechanism and toxicological effects of the typical herbicide (atrazine and diuron) by high voltage discharge plasma coupled with Ti-loaded activated carbon fiber, which were on the basis of the analysis of the effect of surface area, density of surface hydroxyl groups, and the surface zero potential point of Ti-loaded activated carbon fiber on the adsorption properties and degradation efficiency of the typical herbicide (atrazine and diuron).The implement of this project has important theoretical significance for clarifying the regulatory mechanism, adsorption mechanism, synergistic degradation mechanism and toxicological effects by high voltage discharge plasma coupled with Ti-loaded activated carbon fiber, as well as riching the adsorption theory and degradation theory.

由于除草剂的长期、大量使用，许多河流、湖泊中均检测到除草剂的存在，以阿特拉津和敌草隆为代表的典型除草剂污染问题日益严峻。本课题拟以高压放电等离子体协同载钛活性炭纤维吸附、降解水中典型除草剂（阿特拉津、敌草隆）。通过剖析载钛活性炭纤维比表面积、表面羟基密度、表面零电位点等特性对阿特拉津、敌草隆吸附性能和协同催化降解效率的影响，阐明载钛活性炭纤维特性与阿特拉津、敌草隆吸附、催化降解效率之间的关系，揭示高压放电等离子体与载钛活性炭纤维共同作用下，阿特拉津、敌草隆的吸附机理、协同催化降解机理和毒理效应。该项课题的开展对于阐明高压放电等离子体协同载钛活性炭纤维去除水中典型除草剂（阿特拉津、敌草隆）过程中的调控机制、吸附机理、催化降解机理和毒理效应，丰富吸附和降解理论具有重要的理论意义。

现代化农业对人工合成除草剂的依赖性越来越强，阿特拉津和敌草隆是目前施用量较多的两种。除草剂在人类经济、特别是农业经济发展中起着重要作用，然而除草剂也对人、畜、环境生物和水、大气、土壤等产生了较大的危害和污染。针对水体中除草剂的污染问题，本课题开展了高压放电等离子体协同载钛活性炭纤维去除水中典型除草剂——阿特拉津和敌草隆的研究。课题采用溶胶-凝胶法制备了载钛活性炭纤维，并采用现代分析手段对材料进行了表征，揭示了载钛活性炭纤维特性对阿特拉津、敌草隆吸附性能的影响，以及对协同催化降解效率的影响，阐明了高压放电等离子体与载钛活性炭纤维共同作用下，阿特拉津、敌草隆的吸附机理、协同催化降解机理和毒理效应。本成果对于阐明高压放电等离子体协同载钛活性炭纤维去除水中有机物过程中的调控机制、吸附机理、催化降解机理和毒理效应，丰富吸附和降解理论具有重要意义。