Abstract
This study presents the discoloration of methylene blue by heterogenous Fenton-like process using copper. Copper was prepared with sodium ascorbate, an eco-friendly reagent under atmospheric conditions and characterized using X-ray diffraction and scanning electron microscope analysis. Sub-micron-sized particles were formed and mainly composed of metallic copper Cu with the minor presence of Cu2O. The obtained product (labeled as CuR) was compared to a commercial zero-valent copper (labeled as CuF) in the discoloration process of methylene blue. Different parameters such as copper loading, temperature and initial dye concentration were studied. Under the same conditions, CuR and CuF registered 95.04% and 20.46%, respectively, after 10 min of reaction. The discoloration process was due to the in situ production of H2O2 which was evidenced by permanganate method. It was found the formation of 0.18 mM and 75 µM of H2O2 after 2 min of reaction with CuR and CuF, respectively. The reaction rate with CuR was 5 times faster than that with CuF and both followed a pseudo-first-order reaction kinetic. The high activity observed with CuR was found to be due to the presence of Cu2O.
Sign-in/Register to access full text options 
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.
