Application of low‐voltage UVC light and synthetic ZnO nanoparticles to photocatalytic degradation of ciprofloxacin in aqueous sample solutions

Abstract

Ciprofloxacin (CIP) is used synthetic therapeutic antibiotic that is not easily biodegradable and is a water pollutant. The advanced oxidation process method is heterogeneous photocatalysis and for the first time, we used the photocatalytic UVC light/ZnO reaction for the degradation of CIP in contaminated water. The ZnO nanoparticles were synthesized via the sol-gel method. We used a 9-W mercury lamp, which was inserted in the solution to emit UVC light. The optimum conditions for the degradation of CIP in aqueous solution containing 10 mg/L of CIP were a pH of 5.0, 0.15 g/L of ZnO, a stirring speed of 600 rpm and an irradiation time of 140 min. Also the relative standard deviation (RSD) did not exceed 7%. From the kinetic studies, the reactions followed approximately a pseudo-first-order kinetic with the rate constant of 0.032 min 21 . This method was efficiently used for the degradation of CIP in aqueous solutions. 58

Magnetic nano-biocomposite CuFe2 O4 @methylcellulose (MC) prepared as a new nano-photocatalyst for degradation of ciprofloxacin from aqueous solution

“…At higher doses, the removal efficiency ranged from 80.76 to 81.6%, and the dose of 0.2 g was used as an optimal amount for preventing the use of additional photocatalyst. By increasing the dose of photocatalyst, the removal efficiency was raised due to an increase in the active adsorption sites of CIP and radical hydroxyl production (38,39). An increase in the amount of photocatalyst from 0.2 to 0.4 g, due to the turbidity created in the solution, results in a decrease in UV radiation and also a decrease in the radical production of hydroxyl (40).…”

Response surface design for removal of Cr(VI) by hydrogel-supported sulfidated nano zero-valent iron (S-nZVI@H)

“…In recent years, nanomaterials have been widely applied in the removal of pollutants from water (Eskandari et al 2018;Galdames et al 2020;Li et al 2021;Tsade et al 2021). Among them, nano zero-valent iron (nZVI) has been widely used in the remediation of groundwater and soil pollution due to its high specific surface area and reactivity (Zhang 2003).…”

Euphorbia polygonifolia extract assisted biosynthesis of Fe3O4@CuO nanoparticles: Applications in the removal of metronidazole, ciprofloxacin and cephalexin antibiotics from aqueous solutions under UV irradiation

“…[36][37][38][39][40] The usage of nanomaterials has been recognized as an influential technique for efficient wastewater treatment. [41][42][43][44] Among different wastewater treatment methods, photocatalytic degradation has some advantages, such as presenting complete pollutant molecule mineralization, being inexpensive, and requiring minimum facility equipment. [45,46] One of the advanced oxidation processes (AOPs) is heterogeneous photocatalysis.…”