Pharmaceutically active compounds are gradually increasing in different environments such as surface waters, groundwater, and soil. Paracetamol is a pharmaceutical used as a pain reliever and antipyretic. In this study, paracetamol removal was investigated using manganese oxide octahedral molecular sieves (OMS-2) and persulfate. In the first stage of the study, OMS-2 was produced in a laboratory, and then paracetamol removal was investigated in OMS-2 only, persulfate only, and a combination of OMS-2/PS. When using 5 mM persulfate and 0.1 g/L OMS-2, the paracetamol removal efficiency increased to 99.5%. The use of OMS-2 with persulfate resulted in faster and more effective removal of paracetamol compared with OMS-2 only and persulfate only. In another stage of the study, the effects of reaction temperature and pH were investigated. For this purpose, the pH was changed in the range of 2–8, while the temperature was examined at 20, 30, and 40 °C. A high rate of paracetamol removal occurred at all pH and temperature values tested. Paracetamol removal was investigated at different OMS-2 and persulfate concentrations, optimum OMS-2 amount was determined as 0.1 g/L, and optimum persulfate dosage was 20 mM. The reusability of the OMS-2 catalyst was investigated, showing a decrease in removal efficiency with each cycle. In the later stages of the study, free radical quenching studies, the effect of humic acid and inorganic anions and the characterization of the synthesized OMS-2 were performed.

中文翻译：

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氧化锰八面体分子筛（OMS-2）和过硫酸盐有效去除扑热息痛

在地表水，地下水和土壤等不同环境中，药物活性化合物正在逐渐增加。扑热息痛是用作止痛药和退烧药的药物。在这项研究中，使用氧化锰八面体分子筛（OMS-2）和过硫酸盐对扑热息痛进行了研究。在研究的第一阶段，在实验室中生产了OMS-2，然后仅在OMS-2，仅过硫酸盐和OMS-2 / PS的组合中研究了扑热息痛的去除情况。当使用5 mM过硫酸盐和0.1 g / L OMS-2时，扑热息痛的去除效率提高到99.5％。与仅过硫酸盐和仅过硫酸盐的OMS-2相比，将过硫酸盐与OMS-2一起使用可更快，更有效地去除扑热息痛。在研究的另一个阶段，研究了反应温度和pH的影响。以此目的，pH值在2–8范围内变化，而温度在20、30和40°C时进行检查。在所有测试的pH和温度值下，扑热息痛的去除率均很高。在不同的OMS-2和过硫酸盐浓度下研究扑热息痛的去除效果，确定OMS-2的最佳用量为0.1 g / L，过硫酸盐的最佳用量为20 mM。对OMS-2催化剂的可重复使用性进行了研究，结果表明每个循环的去除效率均下降。在研究的后期阶段，进行了自由基猝灭研究，腐殖酸和无机阴离子的作用以及合成的OMS-2的表征。在不同的OMS-2和过硫酸盐浓度下研究扑热息痛的去除效果，确定最佳OMS-2量为0.1 g / L，最佳过硫酸盐剂量为20 mM。对OMS-2催化剂的可重复使用性进行了研究，结果表明每个循环的去除效率均下降。在研究的后期阶段，进行了自由基猝灭研究，腐殖酸和无机阴离子的作用以及合成的OMS-2的表征。在不同的OMS-2和过硫酸盐浓度下研究扑热息痛的去除效果，确定OMS-2的最佳用量为0.1 g / L，过硫酸盐的最佳用量为20 mM。对OMS-2催化剂的可重复使用性进行了研究，结果表明每个循环的去除效率均下降。在研究的后期阶段，进行了自由基猝灭研究，腐殖酸和无机阴离子的作用以及合成的OMS-2的表征。