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首页> 外文期刊>Journal of King Saud University >Gamma ray irradiation assisted decomposition for isoproturon pesticide in aqueous solutions: A detailed study
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Gamma ray irradiation assisted decomposition for isoproturon pesticide in aqueous solutions: A detailed study

机译：γ射线照射在水溶液中辅助异丙脲农药的分解：详细研究

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摘要

Isoproturon (IP), a systemic herbicide, is also considered as a potential groundwater contaminant. In the present study, the radiation-induced degradation of IP employing gamma-rays is investigated. Several factors such as radiation dose, pH and the presence of co-contaminants such as H2O2, isopropanol,tert-butanol, coffee waste (CW), carbonized coffee waste (CWC) and TiO2, which might affect the degradation process are examined. The IP concentration decreased with the increase of radiation dose and the degradation obtained at pH?=?7.0 is found to be 90%. The degradation efficiency decreases with the increase of initial concentration at the same radiation dose. Co-contaminants such as H2O2, TiO2and CW had increased the degradation efficiency. The process followed by first order reaction kinetics. Furthermore, the increase of the concentration of H2O2, isopropanol,tert-butanol and the weight of TiO2, CW and CWC resulted in the decrease of the degradation values. The pH value was found to effect the removal efficiency and the degradation process was enhanced under neutral condition. IP concentration of 30μ M was selected as standard, while 0.63?kGy was selected as the standard radiation dose.
机译：Isoproturon（IP）是一种全身除草剂，也被认为是潜在的地下水污染物。在本研究中，研究了采用γ射线的IP的辐射诱导的降解。检查诸如辐射剂量，pH和共污染物如H 2 O 2，异丙醇，叔丁醇，咖啡废弃物（CW），碳化咖啡废弃物（CWC）和TiO 2可能影响降解过程的几个因素。随着辐射剂量的增加，IP浓度降低，并发现在pH =Δ7.0处获得的降解为90％。随着相同辐射剂量的初始浓度的增加，降解效率降低。诸如H 2 O 2，TiO2和CW等共污染物增加了降解效率。该过程随后是一阶反应动力学。此外，H 2 O 2，异丙醇，叔丁醇和TiO 2，CW和CWC重量的增加导致降解值的降低。发现pH值效果采用去除效率，降解过程在中性条件下增强。选择30μm的IP浓度为标准，选择0.63Ω·kgy作为标准辐射剂量。

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