Yazgan M S, Kinaci C
Istanbul Technical University, Environmental Eng'g. Dep., Maslak, 80626, Istanbul, Turkey.
Water Sci Technol. 2003;48(11-12):511-7.
Beta-endosulfan solutions were ozonated in a lab scale semi-batch reactor in various experimental conditions. Ozonation kinetics of beta-endosulfan and effects of some parameters such as pH, temperature, partial pressure and ozone dosage on oxidation were investigated. Increasing ozone dosage and decreasing of temperature and pH increased the oxidation rate of beta-endosulfan. Maximum 97% of beta-endosulfan could be removed at both 16-mg/min ozone dosages and pH = 4 for 60 minutes of ozonation. The order of the reaction is determined as pseudo first order. Although the rate of reaction was lower than other pesticide oxidation rates cited in the literature, beta-endosulfan reaction to ozonation was achieved with almost 90% removal rate. The temperature dependent rate constant for beta-endosulfan oxidation was determined as kd = 0.947 exp(-2.16 x 10(-3)/T).
在实验室规模的半间歇式反应器中，在各种实验条件下对β-硫丹溶液进行臭氧化处理。研究了β-硫丹的臭氧化动力学以及一些参数（如pH值、温度、分压和臭氧剂量）对氧化的影响。增加臭氧剂量以及降低温度和pH值可提高β-硫丹的氧化速率。在臭氧剂量为16 mg/min且pH = 4的条件下进行60分钟的臭氧化处理，β-硫丹的最大去除率可达97%。反应级数确定为假一级。尽管反应速率低于文献中引用的其他农药氧化速率，但β-硫丹与臭氧化反应的去除率几乎达到90%。β-硫丹氧化的温度依赖性速率常数确定为kd = 0.947 exp(-2.16 x 10(-3)/T)。
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