Of Tio2 Ultrasonic Degradation Of Organic Phosphorus Pesticide - Methyl Parathion

With the development of modern industry and city population, the more organic phosphorus are put into nature and make serious ecological problem which poses human being environment potential hazard due to the difficult to degradation of surfactant under the nature condition.The research on organic phosphorus is indispensable and conditional techniques can't reach ideal goal because of high cost, second-pollution, long treatment-time and low efficiency.In this paper, the degradation feasibility was studied under the function of ultrasound in the presence of TiO2 power for organic phosphorus on the basic of photocatalytic and power-ultrasound degradation reaction aiming at bad effect for thick wastewaters in photocatalytic reaction and huge waste-energy in power-ultrasound. In addition, Methylparathion Pesticide (M1605) as a kind of representative organic phosphorus was chosen as research object of degradation and TiO2 power was used as catalyst when ultrasound was adopted as irradiation resource in place of traditional ultraviolet light. Moreover, the crystal-phase composition of TiO2 power was investigated by using XRD and the structure shape of TiO2 power was also analyzed adopting TEM. In the experiment, the UV-vis spectrophotometer was introduced to follow and inspect the degradation process of M1605 and the intermediate products and degradation mechanism were explored utilizing HPLC. In addition, the effects of sonocatalytic degradation in the presence of different crystal- shape and particle size between only ultrasonic degradation were compared in detail. At the same time, all kinds of factors such as reactive time, TiO2 power adding amount, activation temperature of catalyst, initial pH of M1605 solution, reactive temperature, frequency and power of ultrasound were investigated to explore their effect on the degradation ratio. In addition, the reaction kinetics was discussed for sonocatalytic degradation of M1605 in the presence of TiO2 power. At the same time, re-used times of TiO2 catalyst also was reviewed.The research result shows that the degradation effect of M1605 in the presence of TiO2 catalyst is obviously better than that only ultrasound. Moreover, under the same experiment conditions, the performance of common rutile TiO2 excels at common...