Decolorization of Basic Turquise Blue X-GB and Basic Blue X-GRRL by the Fenton’s Process and its Kinetics

Abstract

Textile industries use dyes to color their products and release waste water containing dyes, causing water pollution which is a serious problem for survival of human life on earth. The decolorization of basic turquise blue X-GB (BTB X-GB) 250% and basic blue X-GRRL (BB X GRRL) 250% dyes was examined by advanced (Fenton process) oxidation process. The effects of different parameters (initial dye concentration, pH, concentrations of hydrogen peroxide (H2O2) and reaction time) have been examined and optimum conditions were determined. It has been noted that percentage decolorization of both dyes (50 mg/L) increases with increase in concentration of H2O2. At optimum conditions (pH=3.0, H2O2=4.8 mM, temperature=50°C, time=80 min of BTB X-GB, and pH=5.0, H2O2=5.6 mM, temperature=40°C, time=60 min of BB X-GRRL) the decolorization obtained by Fenton process was 85.83% of BTB X-GB and 74.98% for BB X-GRRL. 1st order, 2nd order and BMG kinetic models were used to analyze the data. BMG model gives us the higher values of correlation coefficients for all data. Results showed that Fe2+/H2O2 are most effective for oxidation treatment of waste water effluents containing dyes as main pollutants.

UV/H2O2, UV/H2O2/SnO2 and Fe/H2O2 based advanced oxidation processes for the degradation of disperse violet 63 in aqueous medium

“…It was observed that maximum degradation rate for disperse violet 63 was 96.4% within 1 h ( figure 7). These results are comparable with maximum efficiency of reactive red 198 and reactive blue 19 in Fenton reaction [1,10,40,41]. Under the environmental scenario, the advanced oxidation processes are potential agents for the remediation of industrial effluents particularly dyes from textile units.…”

“…Then hydrogen peroxide was added and started to stir for 1 h and then, degradation efficiency was measured. The Fe (Π) dosage is used to catalyze the color removal within a shorter time [1,39]. It was observed that maximum degradation rate for disperse violet 63 was 96.4% within 1 h ( figure 7).…”

“…Now a days, the release of industrial sewages that contain organic dyes causes water pollution such as lakes and rivers [1][2][3]. The degradation of organic contaminants and dyes in wastewater has become the problem of environmental concern [4].…”

Synthesis and characterization of Zn doped WO3 nanoparticles: photocatalytic, antifungal and antibacterial activities evaluation

“…In this method, colloidal solution is formed which act as precursor and coagulated into NPs [29]. The size, structure, doping efficiency and many other characteristics are characterized by SEM, XRD, FTIR, UV/Visible spectroscopy, thermal gravimetric analysis (TGA) and transmission electron microscopy (TEM) [30][31][32][33][34][35][36][37]. Nanotechnology has makes immense applications in different fields.…”

Microwave assisted synthesis of zinc vanadate nanoparticles and photocatalytic application

“…This indicates that the degradation of MB dye increases in the presence of photocatalyst. The increase in degradation rate may be attributed to the production of highly reactive oxidizing species and high generation of free radicals by catalyst in the presence of UV light which degraded the dye to a large extent [48][49][50][51][52][53]. Under these experimental conditions, and after 10 min of UV irradiation, the degradation reaches 83% of MB dye.…”