摘要
Photo-Fenton高级氧化技术是处理难降解有毒有机废水的一种有效的方法。本文阐述了该氧化法的原理及其影响因素,photo-Fenton氧化法在反应中会产生大量羟自由基(·OH),它是一种非常活泼及非选择性物种,其氧化电位为2.8V,氧化能力很强,能够引发水溶液中大部分有机物的氧化还原反应。其优点是操作简便及无二次污染等,反应产物Fe3+可与OH反应形成Fe(OH)3沉淀而对环境无害。缺点是反应必须在pH≤3条件下进行,且H2O2消耗量大而导致价格昂贵,处理成本较高等。
The photo-Fenton oxidation, which can treat high concentration and toxic organic wastewater effectively, was a kind of effective technique. This paper described the mechanism and effects of photo-Fenton oxidation. The plenty of·OH (hydroxyl radicals) was produced in photo-Fenton oxidation. The·OH was reactive and nonselective. Its oxidizing potential was 2.8V, having strong oxidation ability, and most of organics were redox. Moreover, the further studies were presented. The virtues were easy manipulation and not contamination. The Fe3+ might react with OH, and Fe(OH)3 product was harmless to environment. The defect was that reaction was carried under pH≤3. The big wastage of H2O2 resulted in processing high-cost and so on.
出处
《生态科学》
CSCD
2004年第4期362-364,共3页
Ecological Science
基金
国家自然科学基金(29877011)中国科学院南海海洋研究所LED实验室资助
