用负载羟基磷酸钙的蒜皮吸附除氟试验研究

Adsorption and Removal of Fluorine Using Garlic Peel Loaded With Calcium Hydroxyl Phosphate Composite

研究了将羟基磷酸钙(HAP)微粒负载于毫米级大蒜皮(GP)颗粒上制得HAP-GP复合材料,并用于从水溶液中吸附除氟。结果表明:模拟含氟溶液和实际含氟废水,不必预调pH即可直接脱氟,效果良好,对氟的吸附量可达6.82 mg/g,共存杂质离子浓度在低于10倍氟离子浓度条件下基本没有干扰。本研究提供了一种简单、实用的制备HAP-GP复合材料的方法,可直接用于从水中吸附除氟。

HAP-GP composite material was prepared by loading hydroxycalcium phosphate(HAP)on millimeter-sized garlic peel(GP)particles,and used for adsorping and removing fluorine from aqueous solution.The results show that it is not necessary to preadjust the pH of the simulation fluorine-containing solution and actual fluorine-containing wastewater.The composite material has a better adsorption for F-with adsorption capacity of 6.82 mg/g.When the concentration of coexisting impurity ions is lower than 10 times of the fluorine concentration,there is basically no interference in the defluorination.A simple and practical method for preparing HAP-GP is provided,and it can effectively remove fluorine from water.