应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2014年
9期
1592-1594
,共3页
氟%载铁%聚丙烯酰胺凝胶%除氟
氟%載鐵%聚丙烯酰胺凝膠%除氟
불%재철%취병희선알응효%제불
fluorine%iron%polyacrylamide gel%fluoride removal
以 Fe3+溶液在30℃，pH =1.75条件下对聚丙烯酰胺凝胶改性2 h，得到载铁凝胶。运用载铁凝胶进行除氟实验，考察 pH 值、反应温度、反应时间、初始 F -浓度以及干扰离子等因素对载铁凝胶的除氟效果的影响。结果表明，载铁聚丙烯酰胺凝胶适于氟离子浓度为5 mg/ L 的含氟溶液在30℃，pH =8条件下反应2 h，除氟率可达69.32%。Na2 SO4、Na2 CO3、CaCl2和 KCl 等干扰离子对除氟效果的影响较大，而且干扰离子含量越多影响越大，除氟率越低，故用凝胶进行除氟时应先除去干扰离子。
以 Fe3+溶液在30℃，pH =1.75條件下對聚丙烯酰胺凝膠改性2 h，得到載鐵凝膠。運用載鐵凝膠進行除氟實驗，攷察 pH 值、反應溫度、反應時間、初始 F -濃度以及榦擾離子等因素對載鐵凝膠的除氟效果的影響。結果錶明，載鐵聚丙烯酰胺凝膠適于氟離子濃度為5 mg/ L 的含氟溶液在30℃，pH =8條件下反應2 h，除氟率可達69.32%。Na2 SO4、Na2 CO3、CaCl2和 KCl 等榦擾離子對除氟效果的影響較大，而且榦擾離子含量越多影響越大，除氟率越低，故用凝膠進行除氟時應先除去榦擾離子。
이 Fe3+용액재30℃，pH =1.75조건하대취병희선알응효개성2 h，득도재철응효。운용재철응효진행제불실험，고찰 pH 치、반응온도、반응시간、초시 F -농도이급간우리자등인소대재철응효적제불효과적영향。결과표명，재철취병희선알응효괄우불리자농도위5 mg/ L 적함불용액재30℃，pH =8조건하반응2 h，제불솔가체69.32%。Na2 SO4、Na2 CO3、CaCl2화 KCl 등간우리자대제불효과적영향교대，이차간우리자함량월다영향월대，제불솔월저，고용응효진행제불시응선제거간우리자。
A new type of loaded iron gel by mixing Fe3 + solution with polyacrylamide gel keeping pH =1. 75 for 2 h at 30 ℃. This new loaded iron gel was used to remove fluorine from water at different pH values,different temperatures and different initial concentrations of F - . Interfering ions were also experi-mented to study their effect of fluoride. After loaded polyacrylamide gel and the fluoride solution concen-tration of 5 mg / L reacting at 30 ℃ ,pH = 8 for 2 h,fluoride rate can reach 69. 32% ,which may be the best condition for fluorine removal. Interference ions such as Na2 SO4 ,Na2 CO3 ,CaCl2 and KCl have big in-fluence on removing fluoride,and the more interference ion contented the lower rate of fluorine was,there-fore,interference ions should be removed before using gel fluoride.
