Farhadi Narges, Tabatabaie Taybeh, Ramavandi Bahman, Amiri Fazel
Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
Environ Res. 2021 Jul;198:111260. doi: 10.1016/j.envres.2021.111260. Epub 2021 Apr 30.
The present investigation was designed to remove ibuprofen from aqueous solutions and wastewater by activating hydrogen peroxide using ultrasonication (US)/ultraviolet (UV) radiation/zeolite-titanium. The physical-chemical properties of the photocatalyst were determined using BET, FTIR, XRD, FESEM, and EDX-mapping techniques. The titanium oxide crystal size and the catalyst BET were determined to be 4.97 nm and 39.88 m/g, respectively. Tests were performed in a reactor (with a volume of 316 mL) located in an ultrasonic bath to intensify reactions. The synergistic impact of the components of the UV/US/HO/Photocatalyst system was explored. The maximum efficiency (99.58%) was obtained at HO concentration of 0.05 mM, pH 5, UV power of 6 W, photo-catalyst dose of 1 g/L, and contact time of 100 min. The pH variable was more effective than the other parameters. Ions of NO, Cl, and SO had a slightly negative effect on contaminant removal efficiency. The ibuprofen removal (based on COD) from urban water and hospital wastewater was attained 77.82% and 66.24%, respectively. The ibuprofen removal by the developed system followed the first-order kinetic. The results show that the system has high efficiency and reasonable costs (with treatment cost of 6.25 €/m) for ibuprofen decontamination.
本研究旨在通过超声（US）/紫外线（UV）辐射/沸石-钛活化过氧化氢，从水溶液和废水中去除布洛芬。使用BET、FTIR、XRD、FESEM和EDX映射技术测定了光催化剂的物理化学性质。氧化钛晶体尺寸和催化剂BET分别测定为4.97 nm和39.88 m²/g。在置于超声浴中的反应器（体积为316 mL）中进行测试以强化反应。探讨了UV/US/H₂O₂/光催化剂系统各组分的协同作用。在H₂O₂浓度为0.05 mM、pH值为5、UV功率为6 W、光催化剂剂量为1 g/L和接触时间为100 min时获得了最高效率（99.58%）。pH变量比其他参数更有效。NO₃⁻、Cl⁻和SO₄²⁻离子对污染物去除效率有轻微负面影响。从城市水和医院废水中去除布洛芬（基于COD）的效率分别达到77.82%和66.24%。所开发系统对布洛芬的去除遵循一级动力学。结果表明，该系统对布洛芬净化具有高效率和合理成本（处理成本为6.25 €/m³）。
