Method for improving dye wastewater adsorptivity of hydroxyl iron pillared bentonite
A technology for adsorbing dyes and bentonite, which is applied in the direction of adsorption water/sewage treatment, separation methods, combustible gas purification/transformation, etc., can solve the problems of low adsorption capacity, affecting the speed of catalysis and degradation effect, etc., and achieve the purpose of increasing adsorption capacity, Improvement of processing efficiency and improvement of catalytic efficiency
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Embodiment 1
[0010] The hydroxyl iron pillared bentonite powder prepared by the traditional method was acted under a magnetic field with a strength of 3000 gauss for 80 minutes, and the obtained hydroxyl iron pillared bentonite powder was added to the wastewater treatment containing golden orange II dye, and chlorine was added at the same time Sodium chloride, corresponding to every liter of dye wastewater, add 5 g of treated hydroxyl iron pillared bentonite and 1 mol of sodium chloride, stir for 30 minutes, precipitate and separate, analyze the concentration of remaining dye in the supernatant, after analysis, dye gold The removal rate of Orange II was 98.1%, and the adsorption capacity could reach 310 mg / g.
Embodiment 2
[0012] The hydroxyiron pillared bentonite powder prepared by the traditional method was subjected to a magnetic field with a strength of 4000 gauss for 40 minutes, and the obtained hydroxyiron pillared bentonite powder was applied to the treatment of wastewater containing golden orange G dye, and at the same time, chlorinated Sodium, corresponding to every liter of dye wastewater, add 4 g of treated hydroxyl iron pillared bentonite and 1 mol of sodium chloride, stir for 30 minutes, precipitate and separate, and analyze the concentration of remaining dye in the supernatant. After analysis, the dye golden orange The removal rate of II is 95.5%, and the adsorption capacity can reach 291 mg / g.
Embodiment 3
[0014] The hydroxyiron pillared bentonite powder prepared by the traditional method is subjected to a magnetic field with a strength of 4000 gauss for 40 minutes, and the obtained hydroxyiron pillared bentonite powder subjected to the magnetic field is applied to the wastewater treatment containing methylene blue dye, and sodium chloride is added at the same time. Add 1g of treated hydroxyl iron pillared bentonite and 0.5 mol of sodium chloride to each liter of dye wastewater, stir for 15-30 minutes, precipitate and separate, and analyze the concentration of remaining dye in the supernatant. After analysis, the dye Golden Orange II The removal rate is 96.4%, and the adsorption capacity can reach 305 mg / g.
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