Removal of methylene blue and methyl blue from wastewater by electrochemical degradation

Abstract

Electrochemical degradation of such dyes as methylene blue (BM-ylene) and methyl blue (BM-yl) was investigated using UV-Vis spectrophotometry, in order to be removed from the solutions, leading to discoloration of wastewater obtained under simulated laboratory conditions. The electrochemical degradation in the presence of 2 4 SO  ions, as well as in the presence of Clions were compared for the synthetic waters containing BM-ylene and BM-yl. The results showed that the fastest degradation and discoloration of the BM-yl solution containing Clions was achieved, with a high value for its color removal (CR) of 89.7% obtained after 10 min.

Anticorrosive coating based on poly(vinyl acetate) formed by electropolymerization on the copper surface

“…In the case of the standard, the phase angle maximum was shifted to lower frequencies and it has a comparative value, around −28.7°, with that of Cu/SE/HCl sample. The impedance response (log|Z|) has the highest value of around 2.38 (meaning 240 Ω cm −2 ) for Cu/PVAC/HCl sample implying the highest polarization resistance (charge transfer resistance) compared to uncoated samples. Consequently, the polymer coating reaches a good protection performance for copper corroded in 10 −2 mol L −1 HCl solution.…”

“…The organic thin films obtained by the electropolymerization of specific monomers can be electrodeposited on metal surfaces using cyclic voltammetry (CV) or potentiodynamic measurements conducted in electrolyte solutions containing the respective monomers.…”

“…The optimal operating parameters can be found acting on the potential range, environment pH, or number of voltammetric cycles . Organic films have been characterized using electrochemical impedance spectroscopy (EIS), optical microscopy, scanning electron microscopy (SEM), atomic force microscopy, Mössbauer spectroscopy, or X‐ray photoelectron spectroscopy analysis . In addition, the experimental data were associated with theoretical studies and quantum chemistry calculations providing significant information about action mechanism of corrosion inhibitors …”

Interactions between Vitamin C and Nanocolloidal Silver Particles Studied by Cyclic Voltammetry and UV‐Vis Spectrophotometry

“…In previous our studies we reported the results of our research on the electrochemical stability of some drugs, and of some dyes, as follows: metronidazole, benzocaine, hematoxylin, Brilliant Blue, Methylene blue, Methyl blue, Methylorange .…”

Removal of Methylene Blue in aqueous solutions by Electrocoagulation process: Adsorption, Kinetics, studies

“…Similar results have been reported previously by several authors while determining the most suitable kinetic model for 1-phenylazo-2-naphthol (PAN), alizarin saphirol (AS), indigo carmine (IC) [1,[27][28][29][30]. On the other hand, other researchers determined the pseudo-first order as a suitable model to describe the kinetics for the following dyes: Rhodamine B (RhB), alizarin red S (ARS), methyl orange (MO), congo red (CR), methylene blue (BMylene), methyl blue (BM-yl) [14,20,27,29,[31][32][33][34].…”