Abstract
We report the aqueous photodegradation -under NUV–Vis radiation- of diclofenac, a common non-steroidal anti-inflammatory drug found to be persistent in the environment, using mont-La(6%)-Cu0.6Cd0.4S, a nanocomposite prepared by simple cation exchange and impregnation method. Operational parameters relevant for the process have optimized: amount of catalyst, dissolved oxygen concentration, initial diclofenac concentration and pH. Heterogeneous suspensions of 1gL−1 of mont-La(6%)-Cu0.6Cd0.4S nanocomposite allowed removal of ca. 92% of 10mgL−1 solution of diclofenac at pH=5.9 with natural dissolved oxygen from air within 240min, meanwhile TOC removal was 67%. The photocatalytic process is adequately described by the Langmuir-Hinshelwood kinetic model, following apparent pseudo-first order kinetics. A suitable reaction mechanism has been proposed, based on the available kinetic evidences and the reaction products observed by HPLC–MS analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
