化工环保
化工環保
화공배보
ENVIRONMENTAL PROTECTION OF CHEMICAL INDUSTRY
2009年
4期
296-299
,共4页
阴离子表面活性剂%亚甲基蓝%染料%强化%超滤%废水处理
陰離子錶麵活性劑%亞甲基藍%染料%彊化%超濾%廢水處理
음리자표면활성제%아갑기람%염료%강화%초려%폐수처리
anionic surfactant%metylene blue%dye%enhancement%ultrafiltration%wastewater treatment
采用无机陶瓷超滤膜和低浓度阴离子表面活性剂十二烷基苯磺酸钠(SDBS)处理亚甲基蓝(MB)模拟废水,考察了废水中SDBS、MB浓度及废水pH对超滤过程的影响.实验结果表明:SDBS浓度影响MB在最大吸收波长处的吸光度值;当废水中SDBS浓度为1.20 mmol/L(即25℃时的临界胶束浓度)、废水中MB浓度为1.00 mmol/L、废水pH为9.0时,超滤效果最好;在此条件下,透过液中SDBS浓度和MB浓度分别为0.06 mmoL/L和0.01 mmol/L,MB的截留率为99.2%,膜通量为309.6 L/(m~2·h).SDBS对MB超滤过程的强化机理主要为MB与SDBS形成结合体析出及SDBS胶束的增溶作用.
採用無機陶瓷超濾膜和低濃度陰離子錶麵活性劑十二烷基苯磺痠鈉(SDBS)處理亞甲基藍(MB)模擬廢水,攷察瞭廢水中SDBS、MB濃度及廢水pH對超濾過程的影響.實驗結果錶明:SDBS濃度影響MB在最大吸收波長處的吸光度值;噹廢水中SDBS濃度為1.20 mmol/L(即25℃時的臨界膠束濃度)、廢水中MB濃度為1.00 mmol/L、廢水pH為9.0時,超濾效果最好;在此條件下,透過液中SDBS濃度和MB濃度分彆為0.06 mmoL/L和0.01 mmol/L,MB的截留率為99.2%,膜通量為309.6 L/(m~2·h).SDBS對MB超濾過程的彊化機理主要為MB與SDBS形成結閤體析齣及SDBS膠束的增溶作用.
채용무궤도자초려막화저농도음리자표면활성제십이완기분광산납(SDBS)처리아갑기람(MB)모의폐수,고찰료폐수중SDBS、MB농도급폐수pH대초려과정적영향.실험결과표명:SDBS농도영향MB재최대흡수파장처적흡광도치;당폐수중SDBS농도위1.20 mmol/L(즉25℃시적림계효속농도)、폐수중MB농도위1.00 mmol/L、폐수pH위9.0시,초려효과최호;재차조건하,투과액중SDBS농도화MB농도분별위0.06 mmoL/L화0.01 mmol/L,MB적절류솔위99.2%,막통량위309.6 L/(m~2·h).SDBS대MB초려과정적강화궤리주요위MB여SDBS형성결합체석출급SDBS효속적증용작용.
The simulated wastewater containing metylene blue (MB) was treated using inorganic ceramic ultrafiltration membrane and sodium dodecyl benzene sulfonate (SDBS), a kind of anionic surfactant and with low concentration. The effects of SDBS and MB concentrations and wastewater pH on the ultrafiltration were examined. The experimental results show that; The SDBS concentration affects the maximum absorbance of MB; The ultrafiltration effect is the best when the SDBS concentration is 1.20 mmol/L (which is equal to the micelle critical concentration at 25 t), the MB concentration is 1.00 mmol/L and the wastewater pH is 9.0; Under these conditions, the concentrations of SDBS and MB in the permeate are 0.06 mmol/L and 0.01 mmol/L respectively, the retention rate of MB is 99.2% , the membrane flux is 309. 6 L/(m~2 · h). The enhancement mechanism of SDBS on ultrafiltration of MB is precipitation of the MB-SDBS complex and solublization of the SDBS micelle.
