CAJ | 학술논문

为了利用半导体行业产生的磷酸、乙酸混合废液中的磷酸，实验室条件下采用多次萃取法，以磷酸与乙酸质量分数分别为25．35％与1．00％的混合溶液作为萃取对象，磷酸三丁酯为萃取剂，正辛烷为稀释剂萃取分离回收磷酸。实验结果表明，在磷酸三丁酯与正辛烷质量比为1∶2条件下，萃取等质量磷酸乙酸混合溶液，萃取4次后，乙酸质量分数降至0．15％，而磷酸质量分数变化不大，为23．93％，相比未萃取前仅损失了5．60％，并且不同萃取次数之间磷酸的损失基本相同。萃余液可以作为生产磷肥的原料，节约了资源。
위료이용반도체행업산생적린산、을산혼합폐액중적린산，실험실조건하채용다차췌취법，이린산여을산질량분수분별위25．35％여1．00％적혼합용액작위췌취대상，린산삼정지위췌취제，정신완위희석제췌취분리회수린산。실험결과표명，재린산삼정지여정신완질량비위1∶2조건하，췌취등질량린산을산혼합용액，췌취4차후，을산질량분수강지0．15％，이린산질량분수변화불대，위23．93％，상비미췌취전부손실료5．60％，병차불동췌취차수지간린산적손실기본상동。췌여액가이작위생산린비적원료，절약료자원。
To recycle the phosphoric acid from the mixture of phosphoric acid and acetic acid in semiconductor industry , tributyl phosphate is used as extraction agent and normal octane as diluent recycled phosphoric acid from the mixture of phos-phoric acid(mass fraction 25 .35% ) and acetic acid(mass fraction 1 .00% ) in laboratory bymultiple extraction .The results show that if the mass ratio of tributyl phosphate and normal octane is 1∶2 ,after 4 times of extraction ,the concentration of acetic acid is decreased to 0 .15% ,but concentration of phosphoric acid changes less and remains 23 .93% ,just lost 5 .60% , and the lost of phosphoric acid for each extraction is almost the same .The raffinate can be used as raw materials for phos-phatic fertilizer and so the resources can be saved .