Research Group Agua y Salud Ambiental, University of Zaragoza, Zaragoza, Spain.
Navarra de Infraestructuras Locales SA, Pamplona, Spain.
Environ Sci Pollut Res Int. 2021 May;28(19):24167-24179. doi: 10.1007/s11356-021-12542-4. Epub 2021 Jan 28.
The process TiO/PAC/UV-vis has been under study and compared with the isolated treatments of adsorption and photocatalysis determining possible synergies between adsorption and photocatalysis of target antibiotics: amoxicillin, enrofloxacin, sulfadiazine, and trimethoprim. The characterization of the TiO2/PAC mixture was carried out via FESEM and FTIR. Moreover, a kinetic study has been performed. The effect of UV-vis radiation and the type of matrix was analyzed in TiO/PAC/UV-vis process. The performance of this treatment has been monitored during three cycles, evaluating also the regeneration of TiO/PAC mixture by UV-vis light. TiO/PAC/UV-vis process allowed the removal of the antibiotics in the range 90-100% (an average removal of 93% of the initial concentration) after 60 min of treatment. However, only amoxicillin showed a significant synergy applying TiO/PAC/UV-vis process. Regarding matrix effect, no influence of the matrix type (ultrapure water or treated wastewater) was observed. Since PAC tends to be deactivated gradually, the TiO/PAC/UV-vis process performance decreases after each cycle in a 15% average. Finally, regeneration via UV-vis light started to be effective after a total of 4 h of regeneration.
已经对 TiO/PAC/UV-vis 工艺进行了研究，并将其与吸附和光催化的单独处理进行了比较，以确定目标抗生素（阿莫西林、恩诺沙星、磺胺嘧啶和甲氧苄啶）的吸附和光催化之间是否存在协同作用。通过 FESEM 和 FTIR 对 TiO2/PAC 混合物进行了表征。此外，还进行了动力学研究。在 TiO/PAC/UV-vis 工艺中分析了 UV-vis 辐射和基质类型的影响。在三个循环中监测了这种处理的性能，还评估了通过 UV-vis 光对 TiO/PAC 混合物的再生。TiO/PAC/UV-vis 工艺可在 60 分钟的处理时间内将抗生素的去除率控制在 90-100%（平均去除初始浓度的 93%）。然而，只有阿莫西林在应用 TiO/PAC/UV-vis 工艺时表现出显著的协同作用。关于基质效应，未观察到基质类型（超纯水或处理后的废水）的影响。由于 PAC 逐渐失活，因此在每个循环中，TiO/PAC/UV-vis 工艺的性能平均下降 15%。最后，经过总共 4 小时的再生，UV-vis 光的再生开始生效。
