Photocatalytic Degradation of Oxytetracycline Dihydrate from Aqueous Solution Using Nano ZnO and ZnO.xBaTiO3 (x = 3%, 18%, 33% and 48%)  

作　　者：Preyanty Sen Suraya Sabrin Soshi Md. Abdul Gafur Preyanty Sen;Suraya Sabrin Soshi;Md. Abdul Gafur(Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh;Department of Mechanical Engineering, Ahsanullah University of Science and Technology, Dhaka, Bangladesh;Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh)

机构地区：[1]Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh [2]Department of Mechanical Engineering, Ahsanullah University of Science and Technology, Dhaka, Bangladesh [3]Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh

出　　处：《Materials Sciences and Applications》2023年第12期515-525,共11页材料科学与应用期刊（英文）

摘　　要：Traditional wastewater mostly contains pharmaceutical ingredients. Therefore, the wastewater must be completely free from antibiotics before its release into the environment. In the present study, photocatalytic degradation was done to investigate the removal efficiency of Oxytetracycline Dihydrate (OTC) using ZnO, ZnO/3%BaTiO₃ (3 BZ), ZnO/18%BaTiO₃ (18 BZ), ZnO/ 33%BaTiO3 (33 BZ) and ZnO/48%BaTiO₃ (48 BZ) under UV light. After the exposure time of 420 min, about 99.57% and 97.87% of OTC was degraded using ZnO and 3 BZ respectively. Further, increasing the amount of BaTiO₃ in ZnO prolongs the degradation time. Therefore, faster efficiency was found using ZnO nanoparticles. The observed reaction rate constant using ZnO was 0.00933 min^-1 which decreased to 0.00532 min^-1 using 48 BZ, indicating the decrease of reaction rate for increasing the amount of BaTiO₃. Hence, the use of ZnO photocatalyst is anticipated to be a promising technique for the photocatalytic degradation of contaminated wastewater with oxytetracycline antibiotics using UV light.Traditional wastewater mostly contains pharmaceutical ingredients. Therefore, the wastewater must be completely free from antibiotics before its release into the environment. In the present study, photocatalytic degradation was done to investigate the removal efficiency of Oxytetracycline Dihydrate (OTC) using ZnO, ZnO/3%BaTiO₃ (3 BZ), ZnO/18%BaTiO₃ (18 BZ), ZnO/ 33%BaTiO3 (33 BZ) and ZnO/48%BaTiO₃ (48 BZ) under UV light. After the exposure time of 420 min, about 99.57% and 97.87% of OTC was degraded using ZnO and 3 BZ respectively. Further, increasing the amount of BaTiO₃ in ZnO prolongs the degradation time. Therefore, faster efficiency was found using ZnO nanoparticles. The observed reaction rate constant using ZnO was 0.00933 min^-1 which decreased to 0.00532 min^-1 using 48 BZ, indicating the decrease of reaction rate for increasing the amount of BaTiO₃. Hence, the use of ZnO photocatalyst is anticipated to be a promising technique for the photocatalytic degradation of contaminated wastewater with oxytetracycline antibiotics using UV light.

关 键 词：Advanced Oxidation Process (AOP) Antibiotics Zinc Oxide (ZnO) and Barium Titanate (BaTiO3) 

分 类 号：X70[环境科学与工程—环境工程]