Malato S, Blanco J, Richter C, Milow B, Maldonado M I
PSA (Plataforma Solar de Almeria), Tabernas, Spain.
Chemosphere. 1999 Feb;38(5):1145-56. doi: 10.1016/s0045-6535(98)00364-6.
Aqueous solutions of methamidophos (O,S-dimethyl phosphoramidothioato) are mineralised in sunlight in the presence of dispersed particles of TiO2 in a pre-industrial pilot plant. A commercial pesticide (Tamaron 50, 50% Methamidophos) is used as a model to demonstrate the application of the treatment. Total Organic Carbon (TOC) and PO4(3-) are analysed to confirm the mineralization of the contaminants. The concentration of organics in water was set at TOC approximately 100 mg/L, but with only illuminated TiO2, mineralization was slow. Oxidation of the organics present in the formulation is enhanced 18 times by use of an appropriate electron scavenger (peroxydisulphate) compared to TiO2 alone.
在工业化前的中试工厂中，甲胺磷（O,S-二甲基硫代磷酰胺）的水溶液在存在分散的二氧化钛颗粒的情况下于阳光下发生矿化。一种商业杀虫剂（稻丰散50，50%甲胺磷）被用作模型来演示该处理方法的应用。分析总有机碳（TOC）和PO4(3-)以确认污染物的矿化。水中有机物的浓度设定为TOC约100mg/L，但仅使用光照的二氧化钛时，矿化速度缓慢。与单独使用二氧化钛相比，使用合适的电子清除剂（过二硫酸盐）可使制剂中存在的有机物的氧化增强18倍。
