Study on the Performance of Noble Metal Photocatalyst in the Treatment of Mixed Sulfur-containing Waste Gas
The nano-level Pt/TiO2 photocatalyst was used as the raw material,and the optimal operating point of the catalytic sulfur-containing waste gas was explored by the response surface method.Firstly,through three single factor experiments,it was found that the average purification efficiency of sulfur-containing exhaust gas was affected by exhaust gas volume,catalyst dosage and ultraviolet lamp wavelength ratio,but it was not a single linear relationship.Based on this,this study used the response surface method to couple the optimal operating point:exhaust air volume(A)= 1 000 m3/h,catalyst dosage(B)= 2.56,ultraviolet wavelength ratio(C)= 25.26%,and the average purification efficiency predicted at the optimal operating point was 96.912%.Finally,the average purification efficiency of the predicted sulfur-containing gas was verified under the optimal working conditions of the corresponding surface method.The average purification efficiency of the nano-level Pt/TiO2 photocatalyst for the four organic sulfur-containing exhaust gases under the optimal working conditions was 96.522%,and the average purification efficiency of the response surface method was 96.912%.The error is only 0.390%,indicating that the response surface method is reliable for predicting the average purification efficiency of sulfur-containing exhaust gases under the optimal working conditions,which also provides theoretical support for the coupling of other catalysts under the optimal working conditions.
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