sodium-hypochlorite and reactive-red-195

sodium-hypochlorite has been researched along with reactive-red-195* in 2 studies

Other Studies

2 other study(ies) available for sodium-hypochlorite and reactive-red-195

Article	Year
Studies on UV/NaOCl/TiO2/Sep photocatalysed degradation of Reactive Red 195. Journal of hazardous materials, 2010, Feb-15, Volume: 174, Issue:1-3 The photocatalytic degradation of Reactive Red 195 (RR195) has been investigated in aqueous suspensions by using ultraviolet (UV), sodium hypochlorite (NaOCl) and TiO(2)/Sep nanoparticles together. To get the TiO(2)/Sep nanoparticle, the nanocrystalline TiO(2) anatase phase on sepiolite was obtained using a sufficient thermal treatment by gradually increasing the temperature from 300, 400 and 500 degrees C for 3h. Then, TiO(2)/Sep materials were characterized using different spectral and technical structural analyses with scanning electron microscopy (SEM) and X-ray diffraction (XRD). The influence of pH, catalyst amount, oxidant and initial dye concentration was investigated in all the experiments. Maximum colour and chemical oxygen demand (COD) removal were 99.9% and 78% respectively, at a dye concentration of 250 mg L(-1), NaOCl dosage of 50.37 mM, 0.1 g L(-1) weight of TiO(2)/Sep and pH of 5.45 in 3h. In addition, the pseudo-first order model was applied and r(2) values were noted from 0.92 to 0.99. Topics: Azo Compounds; Catalysis; Hydrogen-Ion Concentration; Microscopy, Electron, Scanning; Nanostructures; Naphthalenesulfonates; Photochemistry; Sodium Hypochlorite; Titanium; Ultraviolet Rays; X-Ray Diffraction	2010
Treatment of simulated wastewater containing Reactive Red 195 by zero-valent iron/activated carbon combined with microwave discharge electrodeless lamp/sodium hypochlorite. Journal of environmental sciences (China), 2010, Volume: 22, Issue:4 A comparative study of treatment of simulated wastewater containing Reactive Red 195 using zero-valent iron/activated carbon (ZVI/AC), microwave discharge electrodeless lamp/sodium hypochlorite (MDEL/NaClO) and the combination of ZVI/AC-MDEL/NaClO was conducted. The preliminary results showed the two steps method of ZVI/AC-MDEL/NaClO had much higher degradation efficiency than both single steps. The final color removal percentage was nearly up to 100% and the chemical oxygen demand reduction percentage was up to approximately 82%. The effects of operational parameters, including initial pH value of simulated wastewater, ZVI/AC ratio and particle size of ZVI were also investigated. In addition, from the discussion of synergistic effect between ZVI/AC and MEDL/NaClO, we found that in the ZVI/AC-MEDL/NaClO process, ZVI/AC could break the azo bond firstly and then MEDL/NaClO degraded the aromatic amine products effectively. Reversing the order would reduce the degradation efficiency. Topics: Azo Compounds; Carbon; Coloring Agents; Hydrogen-Ion Concentration; Iron; Microwaves; Molecular Structure; Naphthalenesulfonates; Sodium Hypochlorite; Time Factors; Waste Disposal, Fluid; Water Pollutants, Chemical	2010

Article

Year

Studies on UV/NaOCl/TiO2/Sep photocatalysed degradation of Reactive Red 195.

Journal of hazardous materials, 2010, Feb-15, Volume: 174, Issue:1-3

The photocatalytic degradation of Reactive Red 195 (RR195) has been investigated in aqueous suspensions by using ultraviolet (UV), sodium hypochlorite (NaOCl) and TiO(2)/Sep nanoparticles together. To get the TiO(2)/Sep nanoparticle, the nanocrystalline TiO(2) anatase phase on sepiolite was obtained using a sufficient thermal treatment by gradually increasing the temperature from 300, 400 and 500 degrees C for 3h. Then, TiO(2)/Sep materials were characterized using different spectral and technical structural analyses with scanning electron microscopy (SEM) and X-ray diffraction (XRD). The influence of pH, catalyst amount, oxidant and initial dye concentration was investigated in all the experiments. Maximum colour and chemical oxygen demand (COD) removal were 99.9% and 78% respectively, at a dye concentration of 250 mg L(-1), NaOCl dosage of 50.37 mM, 0.1 g L(-1) weight of TiO(2)/Sep and pH of 5.45 in 3h. In addition, the pseudo-first order model was applied and r(2) values were noted from 0.92 to 0.99.

Topics: Azo Compounds; Catalysis; Hydrogen-Ion Concentration; Microscopy, Electron, Scanning; Nanostructures; Naphthalenesulfonates; Photochemistry; Sodium Hypochlorite; Titanium; Ultraviolet Rays; X-Ray Diffraction

2010

Treatment of simulated wastewater containing Reactive Red 195 by zero-valent iron/activated carbon combined with microwave discharge electrodeless lamp/sodium hypochlorite.

Journal of environmental sciences (China), 2010, Volume: 22, Issue:4

A comparative study of treatment of simulated wastewater containing Reactive Red 195 using zero-valent iron/activated carbon (ZVI/AC), microwave discharge electrodeless lamp/sodium hypochlorite (MDEL/NaClO) and the combination of ZVI/AC-MDEL/NaClO was conducted. The preliminary results showed the two steps method of ZVI/AC-MDEL/NaClO had much higher degradation efficiency than both single steps. The final color removal percentage was nearly up to 100% and the chemical oxygen demand reduction percentage was up to approximately 82%. The effects of operational parameters, including initial pH value of simulated wastewater, ZVI/AC ratio and particle size of ZVI were also investigated. In addition, from the discussion of synergistic effect between ZVI/AC and MEDL/NaClO, we found that in the ZVI/AC-MEDL/NaClO process, ZVI/AC could break the azo bond firstly and then MEDL/NaClO degraded the aromatic amine products effectively. Reversing the order would reduce the degradation efficiency.

Topics: Azo Compounds; Carbon; Coloring Agents; Hydrogen-Ion Concentration; Iron; Microwaves; Molecular Structure; Naphthalenesulfonates; Sodium Hypochlorite; Time Factors; Waste Disposal, Fluid; Water Pollutants, Chemical

2010