Preparation of TiO2 Nanoparticles Using H2O2/TiOSO4 and Applications in Eosin Yellow Photocatalytic Degradation

TiO2 was synthesized in this work by chemical route, when the titanium oxysulfato (TiOSO4) react with 4:6 H2O2/H2O after is dissolved in deionized water. The yellow precipitate was drying at 100oC before heat treated at 400°C to obtain crystalline TiO2. The sample were characterized using FT-IR and X-ray diffraction spectroscopy which identified that product was mixture between two form anatase and rutile. The photocatalytic activity of synthesized TiO2 was tested in the degradation of Eousin yellow which compare with two form of TiO2. Evaluated the results was shown that H2O2 was succeed to preparing TiO2 from TiOSO4 with higher activity then anatase and rutile forms.

Adsorption of Water Contaminates by MnFe2O4 Nano Particles

Wastewater treatment and reuse is a critical issue, researchers are trying to find for cheap and reasonable advances. Adsorption is the most important strategy to evacuate heavy metals. Adsorption happens when particles diffused within the liquid stage for a period of time using the force radiating from an adjoining surface. Nickel and eosin yellow removal from industrial wastewater is considered utilizing manganese ferrite (MnFe2O4), nano particles (Nps), extracted by a co-precipitation strategy at room temperature. The variables examined are the contaminant concentration, weight, pH and contact time. Adsorption isotherm models is examined. The results reveal that the nano manganese ferrite could be adopted as a great adsorbent for the evacuation of nickel and eosin yellow from contaminated water. It is shown that the particle removal rate is diminished with an increment in initial concentration. Also, it shows as the pH increases in the water, the higher the percent removal of the contaminants. Then, it is discovered that as the adsorbent dose is increased from 1 to 3 g/l, the removal of Ni+2 increases from 37% to 60%. The removal of eosin yellow increases from 12% to 28% with an increment within the adsorbent dose from 1 to 4 g/l. The results show that adsorption using nano particles is physiosorption (physical sorption) that occurs at room temperature. The results also revealed that (MnFe2O4), nano particles was a promising adsorbent for removal of Ni ions from industrial wastewater.

Effect of pH on Homogeneous Photodegradation of Eosin Y Dye

Eosin Y (EY), an anionic dye, also known as Eosin Yellow or Bromoeosin, or Acid red 27 is an industrial dye. The residual dye, discharged as one of the components of the untreated effluent, into the adjacent surface and causes water pollution. Photodegradation of EY was investigated at 29 oC in homogeneous aqueous media using UVA light (≈400 – 320 nm) in acetate buffer solution as a function of pH (3.08-7.08). At higher pH, there was no effect of this light on the dye in the solution. Results show that the initial rate of photocolorization increased with decreasing the pH of the dye solution.