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首页> 外文期刊>Science Journal of Chemistry >Effects of Zeolites X and Y on the Degradation of Malathion in Water
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Effects of Zeolites X and Y on the Degradation of Malathion in Water

机译：X和Y沸石对水中马拉硫磷降解的影响

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The inclusion of both zeolites X and zeolite Y significantly affected the dissipation of malathion in water. In the fresh water, malathion degradation followed a pseudo-first order kinetics with concomitant half-life dropping from 8.76 hours in fresh water to 4.44 and 6.65 hours up on the introduction of faujasite X and Y, respectively. Zeolite X had higher degradation efficiency as compared to the Y type. In pure fresh water, Malathion mainly hydrolyzed to form malathion monocarboxylic and dicarboxylic acids as the only degradation products. However, in the presence of zeolites X and Y, in addition to the degradation products obtained in the fresh water, dimethyldithiophosphate was also formed. Notably, all the degradation products obtained are environmentally benign compared to the parent malathion. Eventually, both the adsorption on the zeolite framework and zeolite catalyzed degradation processes contributed to the overall dissipation behavior of the malathion and its degradation products.
机译：X沸石和Y沸石的掺入均显着影响马拉硫磷在水中的消散。在淡水中，马拉硫磷的降解遵循拟一级反应动力学，伴随着八面沸石X和Y的引入，其半衰期从淡水中的8.76小时下降至4.44和6.65小时。与Y型相比，X型沸石具有更高的降解效率。在纯净的淡水中，马拉硫磷主要水解形成马拉硫磷一元羧酸和二羧酸作为唯一的降解产物。然而，在沸石X和Y的存在下，除了在淡水中获得的降解产物之外，还形成了二甲基二硫代磷酸酯。值得注意的是，与母马拉硫磷相比，所有获得的降解产物在环境上都是无害的。最终，沸石骨架上的吸附和沸石催化的降解过程都对马拉硫磷及其降解产物的整体耗散行为做出了贡献。

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