| abstract |
The invention provides a photocatalyst for degrading organic matter in food industry wastewater and a preparation method thereof. In the method of the invention, the rare earth element lanthanum is doped into the titanium dioxide sol, prepared into a gel, dried and impregnated with sulfuric acid, modified with SO 4 2- , and roasted to prepare a photocatalyst. The photocatalyst prepared by the method of the present invention has higher photocatalytic oxidation activity, can effectively convert organic pollutants in food industry wastewater into small inorganic molecules such as H2O and CO2 , and achieve the purpose of complete inorganicization; the present invention The prepared photocatalyst photocatalytically degrades CODcr of food industry wastewater solution, and the CODcr reduction rate reaches 90% after 60 minutes of reaction, and the photocatalytic efficiency is high; moreover, the catalyst can be reused, easily separated, and will not cause secondary pollution. |