化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2009年
8期
1468-1472
,共5页
纳米SiO2%胶束强化超滤%含镉废水
納米SiO2%膠束彊化超濾%含鎘廢水
납미SiO2%효속강화초려%함력폐수
nano SiO2%micell-enhanced ultrafiltration%cadmium-containing wastewater
以纳米SiO2同阴离子表面活性剂十二烷基苯磺酸钠(SDBS)复合的胶束强化超滤处理含镉废水.考察了粉体加入、pH值、粉体浓度对超滤的影响.结果表明,纳米SiO2加入后,膜通量提高了25%,Cd2+截留率有所提高,渗透液中SDBS的浓度在一定条件下有所降低.膜通量、SDBS及Cd2+的截留率随pH值的变化而变化,三者随纳米SiO2加入量的增大而降低.另外,膜阻力主要为膜面吸附和膜孔堵塞阻力.
以納米SiO2同陰離子錶麵活性劑十二烷基苯磺痠鈉(SDBS)複閤的膠束彊化超濾處理含鎘廢水.攷察瞭粉體加入、pH值、粉體濃度對超濾的影響.結果錶明,納米SiO2加入後,膜通量提高瞭25%,Cd2+截留率有所提高,滲透液中SDBS的濃度在一定條件下有所降低.膜通量、SDBS及Cd2+的截留率隨pH值的變化而變化,三者隨納米SiO2加入量的增大而降低.另外,膜阻力主要為膜麵吸附和膜孔堵塞阻力.
이납미SiO2동음리자표면활성제십이완기분광산납(SDBS)복합적효속강화초려처리함력폐수.고찰료분체가입、pH치、분체농도대초려적영향.결과표명,납미SiO2가입후,막통량제고료25%,Cd2+절류솔유소제고,삼투액중SDBS적농도재일정조건하유소강저.막통량、SDBS급Cd2+적절류솔수pH치적변화이변화,삼자수납미SiO2가입량적증대이강저.령외,막조력주요위막면흡부화막공도새조력.
The removal of Cd2+ ions through ultrafiltration from aqueous solution using anionic surfactant SDBS added with nano SiO2 was studied. Effects of nano SiO2 addition and pH on the ultrafiltration process were investigated. The permeation flux was increased by 25% through the addition of nano SiO2, the removal of Cd2+ was also increased in some extent, while the permeated SDBS concentration became lowered. The permeation flux and the rejection of SDBS and Cd2+ are affected by the pH of the solution, which would become lowered when increasing the nano SiO2 addition. In addition, the membrane fouling was mainly due to the the membrane surface adsorption resistance and the membrane pore blocking resistance.
