Study on Process of Synthesized Bone Black and Application
|School||Hebei University of Science and Technology|
|Keywords||Synthetic bone char Solid-phase synthesis Hydroxyapatite Wastewater containing lead Nano - titanium dioxide Photocatalytic properties|
Bone China is more popular in the market , a high-grade porcelain , its main raw material is natural bone char , but the market demand increasing bone charcoal , bone charcoal prices soared . Synthetic bone charcoal to meet the market demand for bone char instead of natural bone char , can reduce bone china price . Calcium carbonate and calcium hydrogen phosphate as the main raw material , the use of solid-phase synthesis prepared synthetic bone char , the main component of hydroxyapatite . The synthetic bone charcoal instead of the natural bone charcoal bone china . The results showed that , the synthetic bone char , bone china production to meet the requirements , and can greatly reduce the cost of production . A mass ratio of calcium carbonate and dicalcium phosphate to 1.0:2.4 , the firing temperature is 1200 ° C , pH 6 after firing , the better the nature of the synthetic bone charcoal . Hydroxyapatite as an adsorbent for aqueous solution Pb 2 sup> and other heavy metal ions have a stronger adsorption . The prepared synthetic bone charcoal in addition to the performance of the lead by changing the synthetic bone charcoal of raw material ratio , temperature , the amount of synthetic bone charcoal the pH value , adsorption time of impact factors research synthetic bone charcoal as an adsorbent for aqueous lead adsorption effect. Experimental results show that : the raw ratio of calcium carbonate and calcium hydrogen phosphate synthetic bone char 1.0:2.4 , no significant effect of temperature on the adsorption effect , dosing 0.3g synthetic bone char , pH 6 , the adsorption time of 80min when synthetic bone char aqueous lead removal rate is relatively high . The synthetic bone charcoal ceramic raw materials can also be supported nano - TiO 2 sub > , because of the long and short of the ceramic surface structure , surface area increases , increased photocatalytic properties . Experimental study of the coating layers of porous ceramic ball diameter , porogen content , the ratio of calcium carbonate and calcium hydrogen phosphate synthetic bone char , illumination time affect the photocatalytic performance . The results show that : the porogen content of 4%, and the ceramic having a diameter of 3mm , its coating Floors to 4 , the synthesis of bone char , calcium hydrogen phosphate and calcium carbonate mass ratio of 2.4:1.0 , good photocatalytic performance .