Preparation of photocatalytic degradation materials and their application in water pollution prevention and control
In response to the problem of poor degradation effect of traditional photocatalytic degradation materials on tetracycline(TCH),a new type of photocatalyst is proposed.The photocatalyst is used as the raw material,and a photo Fenton system is constructed together with peroxydisulfate(PDS)for TCH degradation,and its degradation effect is studied.The experimental results show that under the conditions of 0.06g·L-1 PDS dosage,0.6g·L-1 photocatalyst dosage,15mg·L-1initial concentration of TCH wastewater,and a pH value of 5,the photocatalytic Fenton system has the best degradation effect on TCH.At this point,the removal rate of TCH by the light Fenton system can reach 80％in about 10 minutes,and the removal rate of TCH can reach 100％in 40 minutes.After 5 repeated uses,the TCH removal rate still exceeds 90％,demonstrating good repeatability and stability.
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