| Treating printing and dyeing wastewater and hydrometallurgy of sulphide mineral are two important tasks with practical value. On the basis of surveying photocatalytic oxidation, printing and dyeing wastewater treated and sulphide mineral hydrometallurgy by photocatalytic oxidation technology were studied systematically in this paper. The study showed that the technology is in possession of the prominent virtues. Such as high treatment officency, simple processing equipment, no secondary pollution, etc. So it can provide new thoughts and pathways for industrialization treatment of printing and dyeing wastewater treatment and hydrometallurgy of sulphide mineral. The main contents and results of experiments are as followings:1. C60-doped Ti02 photocatalyst was prepared by sol-gel method. C60-doped Ti02 were characterized by XRD, TEM and UV. The modified-Ti02 has better adsorption and photocatalytic properties than anatase Ti02, concentration of C60, calcining temperature and the quality of Ti(OC4H9)4 have effect on the photocatalytic property of modified-Ti02. The best concentration of C60 is 1.02% and the best calcining temperature is 340癈.2. The initial pH value, initial concentration of methylorange and aerating oxygen have effect on methylorange photocatalytic degradation by use of anatase Ti02 photocatalyst. It has the fast photocatalytic degradation rate as pH value is 3.0. Aerating oxygen is beneficial to methylorangephotocatalytic degradation.3. The initial pH value, aerating oxygen and the concentration adding Fe3+ have effect on CuS photocatalysis oxidation by use of anatase Ti02 photocatalyst. The lower pH value, the faster photocatalytic oxidation rate of CuS. Aerating oxygen and adding Fe3+ are beneficial to photocatalytic oxidation of CuS. But photocatalytic oxidation rate of CuS does not increase with the photocatalytic time for the effect of forming sulfur.
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