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A novel type of TiO2/PP composite filler was produced by loading TiO2 on polypropylene (PP). Then the composite filler was used to pretreat micro-polluted lake water after natural biofilm culturing. The experiment results showed that, under the continuous operating conditions of inflow rate 120 L/h, filling ratio of filler 0.4, UV lamp power 72 W, pH of lake water 7.35, the average removal of CODMn,...
Titanium dioxide (TiO2) film was prepared on activated carbon fibre (ACF) by hydrolysis technique, using sulphate titanium as raw material. Based on the techniques of photo catalytic degradation using TiO2/ACF, and 254nm UV-ray as the light sources, aqueous phenol solution of 40mg/L was photo catalytic decomposed over TiO2 film. The result showed that TiO2/ACF exhibited a degradation efficiency of...
The aim of this research is to apply experimental design methodology to the optimization of TiO2 film photocatalytic degradation of Dimethoate present in wastewater. UV/TiO2 photocatalysis for the oxidation of organic compounds pollutants in water is an environmental promising method. We used the progress of UV/H2O2, UV/TiO2/H2O2, UV/TiO2/Fenton and dark Fenton to degradation Dimethoate in the water,...
In this paper, nanosized TiO2 modified ultra-filtration membrane catalyzed ozonation is studied. Firstly, the mechanism of TiO2-catalyzed ozonation process is confirmed and it was also observed that catalytic ozonation were significantly influenced by tert-butyl alcohol, which testified that nanosized TiO2 catalyzed ozonation of organics follows a radical-type mechanism. In comparison of ozonation...
Degradation of phenol by streamer corona plasma in aqueous solution with suspended TiO2 was conducted. The experimental results present that the addition amount, the crystal size and structure of TiO2 influenced the phenol degradation. In this paper phenol degradation increased with the addition amount of TiO2 in the range of 0-0.4 g/L; the highest degradation rate of phenol was obtained when Degussa...
The synergetic action of UV-Fenton catalytic oxidation and nano-TiO2 photocatalysis to dye wastewater was researched by experiments. The impact of different concentrations and different structures to the dye wastewater treatment was analyzed. And the recovery test of TiO2 was made. The results showed that the performance of TiO2 photocatalysis was relatively stable, and TiO2 could be reused.
In this paper, the synergetic action of UV-Fenton catalytic oxidation and nano-TiO2 photocatalytic to treat Azocarmine G dye wastewater was researched. The results show that the best conditions for the treatment of 250mL Azocarmine G dye wastewater are: the dosage of 30% H2O2 is 1mL; the dosage of 0.1mol/L FeSO4·7H2O is 3mL; the dosage of nano- TiO2 is 1g; pH is 4; illumination distance is 21cm. In...
The present work consisted in the study of Titania/Zeolite catalyzed ozonation for nitrobenzene removal. Catalytic activity of the supported TiO2 is strongly influenced by the heat treatment temperature. Titania/Zeolite calcined at 600??C showed the best activity. An approximate increase of 21% in removal rate was achieved for catalytic ozonation compared with single ozonation. Kinetic study of dissolved...
Research on treatment for chloride of desulphurization wastewater by nano-TiO2 is conducted and based on nano-TiO2 dioxide characteristics of adsorption and photo-catalysis. Some affecting factors on the removal efficiency were also studied, such as different dosage, mixing time, pH value of the solution and light time. The catalysis mechanisms of nano-TiO2 on chloride removal efficiency were discussed...
In order to reach a bigger NO2-/NO3- value in post-processing of biological shortcut nitrification, the pretreatment of the ammoniac wastewater was carried out using TiO2 photo-catalysis, and the optimizing reaction conditions were obtained. The results showed that after TiO2 pretreatment the NO2-/NO3- value in the wastewater was greater than 2 through adjusting the pH value of reaction solution,...
La-doped TiO2/Ti photoelectrodes were prepared by anodization and characterized by SEM, XRD, XPS and UV/VIS/NIR. Photoelectrocatalytic (PEC) performance of La-doped TiO2/Ti photoelectrodes under visible light irradiation was tested. The results of these experiments showed that La-doped TiO2/Ti photoelectrodes prepared under voltage of 160 V, the current density of 100 mA/cm2, La(NO3)3 concentration...
To reduce the energy loss of irradiation light caused by the absorption of target compounds themselves in photoelectrocatalytic (PEC) process, a rotating TiO2/Ti disc electrode was developed for the first time to degrade Sunset Yellow and textile effluent. Compared with a conventional photoelectrocatalytic (CPEC) reactor, in which photoanode was irradiated by light transmitting through a certain thickness...
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