关键词: 泡沫玻璃, 氧化镧, 浸渍法, 除氟

Abstract: Excessive fluoride in drinking water can cause harm to human body.It is necessary to develop low-cost and high efficiency fluoride removal material for drinking water safety.The La（Ⅲ）-loaded foam glass composite was prepared by dip- molding method with foam glass as a carrier.The composition，surface morphology，dissolution rate of lanthanum，and the effect of fluoride removal of the composite material were characterized.Results showed that the best load was 7%（mass frac- tion） lanthanum oxide.The fluoride content of 600 mL waste water could be decreased from 32 mg/L down to 1 mg/L below via 100 g La（Ⅲ）-loaded foam glass composite，which reached the standard for drinking water.After fluoride removal，composite material can be regenerated by the oxalic acid solution treatment and pyrolysis at 600 ℃.

Key words: foam glass, lanthanum oxide, dip-molding, fluoride removal