高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1890-1895.

• 研究论文 • 上一篇    下一篇

抗油污染α-纤维素中空纤维超滤膜油-水分离性能的研究

李红剑1, 曹义鸣1, 杨林松2, 袁权1   

  1. 1. 中国科学院大连化学物理研究所,大连116023;
    2. 北京防化研究院,北京102205
  • 收稿日期:2004-10-15 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家“九七三”计划(批准号:2003CB615703)资助.

Oil-water Separation Performance of Anti-fouling α-Cellulose Hollow Fiber Ultrafiltration Membrane

LI Hong-Jian1, CAO Yi-Ming1, YANG Lin-Song2, YUAN Quan1   

  1. 1. Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;
    2. Beijing Research Institute of Chemical Defense,Beijing 102205,China
  • Received:2004-10-15 Online:2005-10-10 Published:2005-10-10

摘要: 以α-纤维素为原料,一水合N-甲基吗琳-N-氧化物(NMMO.H2O)为溶剂,聚乙二醇(PEG400)为添加剂,去离子水为内外凝胶浴,采用浸入相转化法制备用于油水分离的中空纤维非对称超滤膜,并采用纯水通量表征了膜的性能.用纤维素中空纤维超滤膜进行油水分离实验,油水乳液的截留率可达到99%以上,渗透液含油量小于10 mg/L,达到国家环境保护排放要求.考察了物理清洗、物理清洗加0.1 mol/L HCL清洗、物理清洗加0.1 mol/L NaOH清洗3种清洗方法对油水污染后膜的清洗效果.其中,物理清洗加0.1 mol/LNaOH清洗的清洗方法的通量恢复率达到99%.与其它种类的膜相比,α-纤维素中空纤维膜的油水通量衰减率仅为9.5%,表现出优异的抗油污染性能.

关键词: 纤维素, 超滤膜, 抗污染, 油水分离

Abstract: With cellulose as the polymer materials,monohydrate N-methylmorpholine-N-oxide(NMMO·(H2O)) as the solvent,polyethylene glycol(PEG400) as the additives,asymmetric hollow fiber ultrafiltration membranes were prepared by the immersion phase inversion technique.Water was used as both the internal and external coagulant.The performances of the membrane were characterized by pure water flux.Experimental researches on treatment of oil-water emulsion by using cellulose hollow fiber membranes were performed.The results show that the treatment of oily wastewater by cellulose membrane is feasible and desirable.The oil eliminating efficiency of over 99% and oil concentration of less than 10 mg/L after the filtration were achieved, which can meet the requirement of drainage.The influences of different cleaning methods(physical cleaning,physical cleaning and 0.1 mol/L HCl solution,physical cleaning and 0.1 mol/L NaOH solution) on the cleaning of fouled cellulose membranes were investigated.The results show that the flux recovery of physical cleaning and 0.1 mol/L NaOH processes is 99%.

Key words: Cellulose, Ultrafiltration membrane, Anti-fouling, Oil-water separation

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