Hu Xueli, Zhou Yuanhang, Zhou Yingying, Bai Yun, Chang Ruiting, Lu Peng, Zhang Zhi
Key Laboratory of the Three Gorges Reservoir Region's Eco-environment of Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China.
Chongqing Academy of Ecology and Environmental Sciences, Chongqing, 401147, PR China.
J Clean Prod. 2023 Jan 10;383:135416. doi: 10.1016/j.jclepro.2022.135416. Epub 2022 Dec 3.
Under the new crown pneumonia (COVID-19) epidemic, the intensive use of therapeutic drugs has caused certain hidden danger to the safety of the water environment. Therefore, the core-shell microporous zinc silicate (SiO@ZSO) was successfully prepared and used for the adsorption of chloroquine phosphate (CQ), tetracycline (TC) and ciprofloxacin (CIP) for eliminating the threat of COVID-19. The adsorption efficiencies of 20 mg L of CQ, TC and CIP by SiO@ZSO were all up to 60% after 5 min. The adsorption capacity of SiO@ZSO for CQ, TC and CIP can reach 49.01 mg g, 56.06 mg g and 104.77 mg g, respectively. The adsorption process is primarily physical adsorption, which is heterogeneous, spontaneous and preferential. Moreover, the effects of temperature, pH, salinity, and reusability on the adsorption of CQ, TC, and CIP on SiO@ZSO were investigated. The adsorption mechanism mainly involves electrostatic attraction, partitioning and hydrogen bonding, which is insightful through the changes of the elements and functional groups before and after adsorption. This work provides a solution to the problems faced by the treatment of pharmaceuticals wastewater under the COVID-19 epidemic.
在新型冠状病毒肺炎（COVID-19）疫情下，治疗药物的大量使用给水环境安全带来了一定隐患。因此，成功制备了核壳微孔硅酸锌（SiO@ZSO）并将其用于吸附磷酸氯喹（CQ）、四环素（TC）和环丙沙星（CIP），以消除COVID-19带来的威胁。SiO@ZSO对20 mg/L的CQ、TC和CIP在5分钟后的吸附效率均高达60%。SiO@ZSO对CQ、TC和CIP的吸附容量分别可达49.01 mg/g、56.06 mg/g和104.77 mg/g。吸附过程主要是物理吸附，具有非均相、自发和择优的特点。此外，还研究了温度、pH值、盐度和可重复使用性对SiO@ZSO吸附CQ、TC和CIP的影响。吸附机理主要涉及静电吸引、分配作用和氢键作用，通过吸附前后元素和官能团的变化可深入了解这一过程。这项工作为解决COVID-19疫情下制药废水处理面临的问题提供了一种解决方案。
