The Study Of Apatite Composites’ Controlled Preparation And The Photocatalytic Degradation Of Xanthate Wastewater

Xanthate is toxic and harmful substances, it has a foul smell, even if its content isvery few in ore dressing wastewater, it can also lead to bad smells in the air and destroythe ecological balance system. So, choosing a convenient, simple, rapid and economicmethod to treat xanthate pollution is a serious problem to be solved.The photocatalytic degradation reaction method is convenient, simple and withoutpollution, so it was widely attentioned.Porous material preparation has many mature methods, including inter layerlayer chemical method, template method, blending, intercalation method and layerseparation technology, among them the template synthesis technique is an effectivemeans for preparing ordered porous materials. The method can realize the controlof aperture, thickness and shape of apatite porous material, so it is of great significance.This study we selected natural phosphate rock to synthetise hydroxyapatite whichused as photocatalyst or carrier. In order to obtain controllable of stucture andproperties of the hydroxyapatite, We Use carboxymethyl cellulose(CMC) as templatefor synthesis of hydroxyapatite. Through the complex network structure and containingcarboxyl, hydroxyl of CMC to regulate HAP morphology, Using ultrasonic oscillationto regulate HAP surface area to increase the surface activity of HAP. Then wecompound hydroxyapatite with butyl titanate to preparate photocatalytic compositematerial, And change the rate of hydrolysis of tetrabutyl titanate and regulate TiO2particle size and distribution on HAP to improve the photocatalytic performance ofcomposite materials, and through its effect on decolorization of methyl orange to studyits photocatalytic performance and finally learn its photocatalytic degradation ofxanthate. The results show that the amount of CMC can control the structure andmorphology of HAP, when the content of CMC is7%, ultrasonic oscillation with5min,Ti/HAP mass ratio is10%, the roasting temperature is600℃and calcined for6hourscan make degradation rate of50mg/L xanthate to99.99%, reaching the national surface water discharge standard.