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首页> 外文期刊>Catalysts >Elucidation and Characterization of New Chlorinated By-Products after Electrochemical Degradation of Hydrochlorothiazide Using Graphite–Poly Vinyl Chloride Electrode
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Elucidation and Characterization of New Chlorinated By-Products after Electrochemical Degradation of Hydrochlorothiazide Using Graphite–Poly Vinyl Chloride Electrode

机译：石墨-聚氯乙烯电极电化学降解氢氯噻嗪后新的氯化副产物的阐明和表征

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This paper describes an electrochemical treatment process of hydrochlorothiazide (HDZ) under different conditions such as initial concentration, sodium chloride and applied voltage. In this present study, HDZ was treated by electrochemical oxidation process using graphite-PVC composite electrode as anode and Platinum (Pt) as cathode. All results were analyzed using liquid chromatography-time of flight/mass spectrometry (LC-TOF/MS). It was found that at high applied voltages, and high amounts of NaCl, the electrochemical treatment process was more efficient. The removal% of HDZ was 92% at 5 V after 60 min. From the obtained results, the electrochemical oxidation process of HDZ followed pseudo first order with rate constant values ranged between 0.0009 and 0.0502 min ?1 , depending on the experimental conditions. Energy consumption was also considered in this study, it was ranged between 0.9058 and 5.56 Wh/mg using 0.5, 0.3 and 0.1 g NaCl within interval times of (10, 20, 30, 40, 50, 60, 70, and 80 min). Five chlorinated and one non-chlorinated by-products were formed and analyzed in negative ionization (NI) mode during the electrochemical process. Due to the strong oxidizing potential of the chlorine (Cl 2 ) and hypochlorite ion (ClO ? ), HDZ and its by-products were removed after 140 min. Furthermore, a novel synthesis of chlorothiaizde as one of the new by-products was reported in this present study. Toxicity was impacted by the formation of the by-products, especially at 20 min. The inhibition percentage (I%) of E. coli bacteria was decreased to be the lowest value after 140 min.
机译：本文介绍了氢氯噻嗪（HDZ）在不同条件下的电化学处理工艺，例如初始浓度，氯化钠和施加电压。在本研究中，以石墨-PVC复合电极为阳极，铂（Pt）为阴极，通过电化学氧化工艺对HDZ进行了处理。使用液相色谱-飞行时间/质谱（LC-TOF / MS）分析所有结果。发现在高施加电压和大量NaCl下，电化学处理过程更有效。 60分钟后，在5 V下，HDZ的去除率为92％。根据所得结果，取决于实验条件，HDZ的电化学氧化过程遵循伪一级反应，其速率常数值在0.0009至0.0502min -1之间。在这项研究中还考虑了能耗，在10、20、30、40、50、60、70和80分钟的间隔时间内，使用0.5、0.3和0.1 g NaCl在0.9058至5.56 Wh / mg的范围内。在电化学过程中，形成了五种氯化副产物和一种非氯化副产物，并以负离子化（NI）模式进行了分析。由于氯（Cl 2）和次氯酸根离子（ClO 3）具有很强的氧化能力，因此HDZ及其副产物在140分钟后被除去。此外，在本研究中报道了氯噻嗪作为一种新的副产物的新型合成方法。副产物的形成会影响毒性，尤其是在20分钟时。 140分钟后，大肠杆菌的抑制率（I％）降至最低。

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