采用标准孔径为0.1 μm的亲水PVDF(聚偏氟乙烯)微滤膜和0.2 μm的PTFE(聚四氟乙烯)膜,研究了温度、压力、浓度等操作条件对BSA溶液死端微滤膜通量的影响.实验表明,温度、压力和浓度对微滤膜通量有重要影响,通量随温度升高而增大;随浓度的增大而减小;当压力上升到0.14 MPa时,通量将不随压力变化,达到极限通量.在实验范围内(0.04～0.16 MPa,18～30℃),对于去离子水,通量和温度成良好的线性关系,通量随温度、压力的变化关系分别为ln(J/J)w=-0.021 9T-13.993和ln(J/△p)w=-1.958 4△p+5.283 4;对于BSA溶液,则在0.04～0.14 MPa,20～30℃范围内,通量随温度、压力的变化关系分别为JE/JT=ln(-0.004 5T2+0.230 9T)和ln(J/△p)=-3.576 7△p+4.627 7.溶液浓度增大,稳态通量下降;当溶液浓度达到一定值时,由于滤饼层厚度趋向平衡厚度,稳态通量将近似恒定.
参考文献
| [1] | Woods D;Pierce C;Zeiher E H .Biofouling of reverse osmosis systems:Three case studies[P].US O8075050-64,1991. |
| [2] | Mattheus F.A.Goosen;Shyam S.Sablani;Salha S.Al-Maskari;Rashid H.Al-Belushi;Mark Wilf .Effect of feed temperature on permeate flux and mass transfer coefficient in spiral-wound reverse osmosis systems[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2002(1/3):367-372. |
| [3] | Mohammadi T;Kazemi Moghadam M;Madaeni S S .Hydrodynamic factors affecting flux and fouling during reverse osmosis of seawater[J].Desalination,2002,151:239-245. |
| [4] | Konstantinos B P;Peter Q;Heracles P .A study of the direct osmotic concentration of tomato juice in tubular membrane module configuration (Ⅰ) The effect of certain basic process parameters on the process performance[J].Journal of Membrane Science,1998,150:99-110. |
| [5] | Beaudry E G;Lampi K A .Osmotic concentration of fruit juices[J].Flussiges Obst,1990,57:652-656,663-664. |
| [6] | Yao W X;Kennedy K J;Tam C M et al.Pre-treatment of kraft pulp bleach plant effluent by selected ultrafiltration membranes[J].Canadian Journal of Chemical Engineering,1994,72:991-999. |
| [7] | Peri C;Dunkley W L .Reverse osmosisof cottage cheese whey (1) Influence of composition of the feed[J].Journal of Food Science,1971,36:25. |
| [8] | Choe T B;Masse P;Verdier A .Membrane fouling in the UF of polyelectrolyte solutions:polyacrylic acid and bovine serum albumin[J].Journal of Membrane Science,1986,26:17-30. |
| [9] | Andrzej B. Koltuniewicz;R.W. Field .Process factors during removal of oil-in-water emulsions with cross-flow microfiltration[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,1996(1/2):79-89. |
| [10] | Samuelsson G;Dejmek P;Tragardh G et al.Minimizing whey protein retention in cross-flow microfiltration of skim milk[J].International Dairy Journal,1997,7:237-242. |
| [11] | Ho CC.;Zydney AL. .A combined pore blockage and cake filtration model for protein fouling during microfiltration[J].Journal of Colloid and Interface Science,2000(2):389-399. |
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