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采用络合萃取法处理模拟金刚烷胺制药废水,比较了苯、CCl4和P204等11种萃取剂对水溶液中金刚烷胺的萃取效果,考察了溶液初始pH值、稀释剂的类型、萃取剂与稀释剂的配比和油/水比等因素对萃取效率的影响,并对萃取液进行了反萃取分离研究.结果表明,在水溶液中金刚烷胺浓度为1000 mg·L-1,溶液初始pH值为8.0~10.0,油/水比为1∶1的条件下,采用P204与正辛醇体积比3∶2的复配萃取剂进行萃取分离,金刚烷胺萃取率可以达到99.0%以上,当金刚烷胺浓度增加至10.0 g·L-1时,萃取率仍可以保持在97.0%以上;以2.0 mol·L-1的HCl溶液为反萃取剂,按照油/水比为1∶1可将51.1%的金刚烷胺从萃取剂中反萃分离.
The simulated extraction of amantadine in pharmaceutical wastewater by complex extraction method was compared with 11 extraction solvents such as benzene, CCl4 and P204. The effects of the initial pH of the solution, the type of diluent, The ratio of diluent and the ratio of oil to water on the extraction efficiency were investigated.The results showed that when the concentration of amantadine in the aqueous solution was 1000 mg · L-1, the initial pH of the solution The value of 8.0 ~ 10.0, oil / water ratio of 1: 1 conditions, the use of P204 and n-octanol volume ratio of 3: 2 extract extraction separation, amantadine extraction rate can reach 99.0% or more, when When the concentration of amantadine was increased to 10.0 g · L -1, the extraction rate could still be above 97.0%. Using 2.0 mol·L -1 HCl solution as stripping agent, the oil / water ratio was 1: 1 51.1% amantadine was stripped from the extractant.