【摘要】 本文应用液膜法处理了磷酸根离子,取得了比较好的分离效果。液膜是一种油包水的乳状液,膜相含有萃酸剂TBP、表面活性剂Span 80和煤油溶剂,膜内相是含2%CaCl₂和4%的NH₄OH。我们试验了内相试剂、表面（?）性剂、萃取剂、PH值等因素对分离的影响,结果表明:液膜法有分离效率高和萃取剂用量少的优点。在30分钟内,它能把残液中磷酸根浓度由100-500PPm降到10PPm以下,分离效率可达98%左右。更多还原

【Abstract】 This paper describes separation of PO₄^3- ion with liquid surfactant membranes. The liquid membrane is water-in-oil emulsions wherein the oil phase comprises sorbitan monooleate （span 80）as a surfactant,tributyl phoshate（T.B.P） as an ion-changer, kerosene as a solvent, and whereinthe aqueous phase （i.e.internal phase） comprises CaCl₂ 2.0% （vol.） andNH₄OH 4% （vol.） solution. The effects of interal reagent, surfactant,extractant and PH factor have been tested. The results indicate that liquidmembrane has advantages of high.extraction power and reducing extract-ant demand.We have achieved good result of separation-the concentrat-ion of PO₄^3- ion has been reduced from 100-500ppm to below the average10ppm, its efficiency being up to 98%.更多还原