化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2014年
9期
2304-2308,2320
,共6页
李兴扬%王茹%张旭%叶贤伟
李興颺%王茹%張旭%葉賢偉
리흥양%왕여%장욱%협현위
乳液%液膜%分离%氟%表面活性剂%废水
乳液%液膜%分離%氟%錶麵活性劑%廢水
유액%액막%분리%불%표면활성제%폐수
emulsions%liquid membranes%separation%fluoride%surfactants%waste water
乳状液膜在分离富集溶液中的微量物质方面获得广泛的应用,本文研究了其对溶液中氟离子的分离富集效果,确定了制备稳定乳状液膜的条件:乳化剂(T-154)∶膜增强剂(液体石蜡)∶溶剂(煤油)=3∶2∶95(体积比),内水相为3%的Al2(SO4)3溶液,油内比为1∶0.6;讨论了分离富集条件,包括乳水比、溶液pH值、搅拌速度和富集时间等因素;应用于环境水样中氟离子的测定,加标回收率为96%~103%,相对标准偏差RSD(n=6)为2.0%~4.8%,结果令人满意。指出该方法操作简单、成本低、效率高,可用于分离富集废水中的氟离子。
乳狀液膜在分離富集溶液中的微量物質方麵穫得廣汎的應用,本文研究瞭其對溶液中氟離子的分離富集效果,確定瞭製備穩定乳狀液膜的條件:乳化劑(T-154)∶膜增彊劑(液體石蠟)∶溶劑(煤油)=3∶2∶95(體積比),內水相為3%的Al2(SO4)3溶液,油內比為1∶0.6;討論瞭分離富集條件,包括乳水比、溶液pH值、攪拌速度和富集時間等因素;應用于環境水樣中氟離子的測定,加標迴收率為96%~103%,相對標準偏差RSD(n=6)為2.0%~4.8%,結果令人滿意。指齣該方法操作簡單、成本低、效率高,可用于分離富集廢水中的氟離子。
유상액막재분리부집용액중적미량물질방면획득엄범적응용,본문연구료기대용액중불리자적분리부집효과,학정료제비은정유상액막적조건:유화제(T-154)∶막증강제(액체석사)∶용제(매유)=3∶2∶95(체적비),내수상위3%적Al2(SO4)3용액,유내비위1∶0.6;토론료분리부집조건,포괄유수비、용액pH치、교반속도화부집시간등인소;응용우배경수양중불리자적측정,가표회수솔위96%~103%,상대표준편차RSD(n=6)위2.0%~4.8%,결과령인만의。지출해방법조작간단、성본저、효솔고,가용우분리부집폐수중적불리자。
Emulsion liquid membrane system containing mobile carrier is widely applied in separation and preconcentration of trace substances in solution. In this paper,the separation performance for fluoride was studied by the emulsion liquid membrane. Established stable conditions of the emulsion liquid membrane were as follows:the volume ratio of T-154 to liquid paraffin to kerosene was 3∶2∶95,the mass concentration of Al2(SO4)3 used as the internal phase was 3%,and the ratio of oil phase to internal phase was 1∶0.6. The separation conditions including the ratio of emulsion to external phase, the value of pH , stirring speed and enrichment time were investigated. The fluoride in the environmental water was determined with the prepared emulsion. The results showed that the recovery of standard addition was 96%-103%,the relative standard deviation was 2.0%-4.8%. The method of separation and preconcentration of fluoride had the advantages of simple operation,low-cost and high efficiency.