H2O2-assisted photolysis of reactive dye BES golden yellow simulated wastewater

Abstract

Reactive dye BES golden yellow simulated wastewater was treated with H(2)O(2)-assisted photolysis method. Influences of factors such as reaction time, initial pH and H(2)O(2) dosage were investigated, and the reaction kinetics of the process were explored. Results showed that, the degradation of 200 mg/L BES golden yellow solution happened only in the presence of both conditions: UV irradiation and H(2)O(2) addition. Initial pH and H(2)O(2) dosage had remarkable influence on the removal efficiency of the dye. Through several groups of univariate experiments, the optimum pH and H(2)O(2) dosage of the photolysis process were found to be 6-7 and 0.0375 mL 30% H(2)O(2) per milligram of BES golden yellow, respectively. The photolysis process was approximately in accordance with the second-order kinetic equation.

Robust polymeric hydrogel using rod‐like amidodiol as crosslinker: Studies on adsorption kinetics and mechanism using dyes as adsorbate

“…Moreover, they are not biodegradable and mainly aromatic in structures. Various strategies such as adsorption, chemical oxidation, chemical flocculation, froth flotation, ultrafiltration, reduction, chemical destruction, and membrane filtration have been used for the color removal of water . Among these, adsorption process is considered to be highly efficient due to its sludge free clean operation, simplicity of design, and complete removal of dyes.…”

“…Various strategies such as adsorption, chemical oxidation, chemical flocculation, froth flotation, ultrafiltration, reduction, chemical destruction, and membrane filtration have been used for the color removal of water. [11][12][13][14][15][16] Among these, adsorption process is considered to be highly efficient due to its sludge free clean operation, simplicity of design, and complete removal of dyes. Crini reviewed adsorbents such as activated carbon, clays, siliceous materials, and agricultural wastes for the removal of dyes.…”