dye

The activity of the photoinitiator system, based on triethanolamine (TEOA) and methylene blue (MB), on the photopolymerization of hydroxyethyl acrylate (HEA) monomer under very soft irradiation conditions, was evaluated. A remarkable difference in the polymerization kinetics of a set of PHEA experiments was underlined according to TEOA/MB concentrations, as well as the solutions pH.

Adsorption of eriochrome black T (EBT) and rose bengal (RB) mixture from aqueous solutions was investigated using a mixture of low-cost biosorbents – 50 % of raw state potato peels and 50 % of raw state eggshell (M 50%). The surface charge distribution was determined by acid-base titration and the point of zero charge of the M 50% was found to be 8.5. The adsorbent materials were characterized by Fourier transform infrared spectroscopy and X-ray diffraction. It was confirmed that M 50% was mainly composed of calcite and cellulose.

The research revealed that Fenton reagent is to be utilized to remove the dye (active bright orange CS/5K) from industrial sewage. Hypercube Hyperchem Professional v8.01 software (trial) was used to carry out the quantum-chemical calculation of colouring agent structure and heat energy. Based on the information from references and the received experimental data, the oxidation mechanism of colouring agent (active bright orange CS/5K) by photo-Fenton system has been introduced.