High efficient degradation of Cefixime using UV/TiO2 photocatalytic process: A comparison between photocatalytic and photolytic
Authors
Abstract:
Introduction: The existence of pharmaceuticals in aquatic ecosystem, their persistence and possible effects on living organisms and inefficient systems in removal of these compounds from water and wastewater are a growing concern. In this research, the UV/TiO2 photocatalytic degradation of Cefixime was investigated so as to identify if this method was efficient for removal of Cefixime or not. Methods: The experimental parameters like as primary concentration of Cefixime, catalyst dosage, solution pH and time were assessed and optimized. The photocatalytic analysis was based on residual Cefixime identification by HPLC. The chromatographic conditions were comprised of a reversed‐phase C18 column with mobile phase consisting of 45:55 v/v mixture of Acetonitrile: water. Results: The optimum removal efficiency for Cefixime was obtained after 60 min (90.98%) when 1 mg/L TiO2 was used at pH=3. The increase of catalyst concentration from 1 to 70 mg/L led to a decrease in degradation efficiency. Conclusion: According to results, UV/TiO2 process could be a promising technique for the removal of Cefixime with good efficiency in a relatively short reaction time
similar resources
a strategy for xenobiotic removal using photocatalytic treatment, microbial degradation or integrated photocatalytic-biological process
full text
Optimization of Photocatalytic Degradation of Phenol Using Simple Photocatalytic Reactor
The phenol photocatalytic degradation was investigated using heterogeneous catalyst Ag-doped ZnO nanowires under UV irradiation. Ag-ZnO nanowires were immobilized on borosilicate glass via a simple hydrothermal technique. Preliminary photodegradation studies were performed with Ag-ZnO nanowires at various concentrations of phenol (10 60 mg/L) at undiluted pH. After determination of the optimal ...
full textPhotolytic and photocatalytic decolorization of Lauth's violet using nano-titanium dioxide: A kinetics study
Photolysis and photocatalysis of Lauth's violet using nano-titanium dioxide at various aqueous buffer and non-buffer pHs. The effects of some various operating parameters such as initial dye concentration, medium pH, illumination time and catalyst amount have been investigated in a photoreactor equipped with high pressure mercury lamp. Spectrophotometric methods supported that the dye is al...
full textPhotocatalytic (UV-A/TiO2) degradation and photolytic (UV-A) degradation of steroid hormones: norethisterone and danazol in aqueous medium
In this paper, the photocatalytic (UV-A/TiO2) degradation of two steroid hormones: norethisterone and danazol in aqueous medium has been studied using immobilized titanium dioxide as photocatalyst. The photolytic degradation (degradation without photocatalyst) of the two hormones was also investigated. UV-A irradiation was provided by black light lamp 18 W. The photocatalytic and photolytic deg...
full textPhotocatalytic Degradation of Acetaminophen
The photocatalytic degradation of a common analgesic (acetaminophen) with titanium dioxide irradiated with low energy ultraviolet light (365 nm) was studied in order to determine the effect of several parameters such as catalyst’s weight, photochemical effect, and initial concentration. The results indicate that acetaminophen is degraded in the order of 4% by the photochemical effect. The prese...
full textMy Resources
Journal title
volume 21 issue None
pages 159- 168
publication date 2017-08
By following a journal you will be notified via email when a new issue of this journal is published.
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023