Ventura A, Jacquet G, Bermond A, Camel V
Institut National Agronomique Paris-Grignon, Laboratoire de Chimie Analytique, GER Chimie Analytique, Paris, France.
Water Res. 2002 Aug;36(14):3517-22. doi: 10.1016/s0043-1354(02)00064-7.
The degradation of refractory chemicals in water requires chemical oxidation by hydroxyl radicals. Among the systems that may be used to generate OH(o), the Fenton's reagent consists of the mixing of ferrous iron and hydrogen peroxide. Even though this system is very simple, the oxidation of an organic compound is difficult to control and the ferrous iron regeneration is limited. Very recently, electrochemical systems have merged that allow the electrochemical production of ferrous iron and/or hydrogen peroxide, thereby allowing the generation of OH(o). So a simple electro-Fenton system has been used and tested for its efficiency in producing hydroxyl radicals. Atrazine was chosen as a model organic compound as its reaction with OH(o) has been extensively studied. Comparison with the classical Fenton system gives advantage to the electrochemical system, due to a more thorough oxidation of atrazine.
水中难降解化学物质的降解需要通过羟基自由基进行化学氧化。在可用于生成·OH的体系中，芬顿试剂由亚铁离子和过氧化氢混合而成。尽管该体系非常简单，但有机化合物的氧化难以控制，且亚铁离子的再生受到限制。最近，出现了一些电化学体系，它们能够通过电化学方法生成亚铁离子和/或过氧化氢，从而实现·OH的生成。因此，一个简单的电芬顿体系已被用于测试其产生羟基自由基的效率。由于阿特拉津与·OH的反应已得到广泛研究，所以选择它作为模型有机化合物。与传统芬顿体系相比，电化学体系具有优势，因为它能使阿特拉津得到更彻底的氧化。
