Ozonization water treatment method using manganese dioxide one-dimensional nano material as catalyst
A nanomaterial, manganese dioxide technology, applied in the direction of oxidized water/sewage treatment, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of low degradation efficiency and achieve mineralization The effect of increasing the degree and accelerating the degradation rate
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Embodiment 1
[0024] Weigh 1.59g of potassium permanganate and 0.68g of manganese sulfate monohydrate and add it to 100mL of distilled water; mix well to form a reddish-brown solution, then transfer it to a polytetrafluoroethylene-lined reactor, and keep it sealed at 140°C for 3h ; After the reaction is completed, filter the brown solid substance, wash away possible residual ions with distilled water, dry in air at 100° C. and then calcined at 350° C. for 2 hours to obtain manganese dioxide nanomaterials. Its TEM picture is shown in figure 1 , XRD pattern see figure 2 .
Embodiment 2
[0026] The initial concentration of phenol in 200ml is 100mg L -1 In the simulated wastewater, add 0.20g of manganese dioxide nanomaterials, start stirring, and pass through the ozone flow rate of 0.50mg min at the reaction temperature of 20°C -1 Ozone, record the concentration of phenol at different times. The result is as image 3 As shown, (1) line is ozonation alone (no catalyst), and (2) line is ozonation catalyzed by manganese dioxide nanomaterials. It indicated that the addition of manganese dioxide nanomaterials significantly promoted the degradation of phenol.
Embodiment 3
[0028] The initial concentration of phenol in 200ml is 100mg L -1 In the simulated wastewater, add 0.10g of manganese dioxide nanomaterials, start stirring, and pass ozone flow rate of 0.50mg min at the reaction temperature of 20°C -1 Ozone, record the concentration of phenol at different times. The result is as Figure 4 As shown, (1) line is ozonation alone (no catalyst), and (2) line is ozonation catalyzed by manganese dioxide nanomaterials. It indicated that the addition of manganese dioxide nanomaterials significantly promoted the degradation of phenol.
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