Comparison of Fenton's oxidation and ozonation for removal of estrogens.
Comparison of Fenton's oxidation and ozonation for removal of estrogens.
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DOI：
10.2166/wst.2011.339
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发表时间：
2011-05
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通讯作者：
Jana Nakrst;Mirjana Bistan;T. Tišler;J. Zagorc-končan;J. Derco;A. Z. Gotvajn
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文献类型：
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作者：
Jana Nakrst;Mirjana Bistan;T. Tišler;J. Zagorc-končan;J. Derco;A. Z. Gotvajn
本研究比较了芬顿氧化和臭氧氧化17 β-雌二醇（E2）和17 α-乙炔基雌二醇（EE 2）作为两种可能的方法去除水溶液中的雌激素的效率。研究了在不同的试剂Fe 2+：H2 O2（1：0.5; 1：10; 1：20; 1：33）比下芬顿氧化去除的有效性，其中在反应的最初几分钟内实现了高达100%的E2和EE 2去除。E2（17 β-雌二醇）去除的最佳摩尔比为1：33，而在EE 2的情况下，最有效的摩尔比为1：20。臭氧化快得多，因为在30秒内实现了雌激素的完全去除（pH约等于6），但是臭氧化的时间延长至60分钟，试图分解形成的副产物，表达雌激素活性，通过YES（酵母雌激素筛选）测定检测。结果表明，评价沃茨中雌激素的去除效果应结合化学分析和生物测定。
This study compares efficiency of Fenton's oxidation and ozonation of 17beta-estradiol (E2) and 17alpha-ethinylestradiol (EE2) as two possible processes for removal of estrogens from aqueous solutions. The effectiveness of Fenton's oxidative removal was studied at different ratios of reagents Fe2+:H2O2 (1:0.5; 1:10; 1:20; 1:33), where with some molar ratios up to 100% removal of E2 and EE2 was achieved in the first few minutes of reaction. The best molar ratio for E2 (17beta-estradiol) removal was 1:33, while in the case of EE2 the most efficient one was 1:20 ratio. Ozonation was much faster, because complete removal of estrogens was achieved in 30 seconds (pH approximately eaqual 6), but the time of ozonation was extended up to 60 minutes trying to decompose formed by-products, expressing estrogenic activity, detected by YES (Yeast Estrogen Screening) assay. The obtained results showed that the removal efficiency of estrogens from waters should be assessed by a combination of chemical analyses and bioassay.