大豆蛋白在聚砜膜上的吸附行为

膜科学与技术 , 2005, 25(6): 1-6. doi: 10.3969/j.issn.1007-8924.2005.06.001

大豆蛋白在聚砜膜上的吸附行为

李秀芬 ^1, , 王晓丽 ^2, , 傅学起 ^3, , 陈坚 ^4,

1.江南大学,工业生物技术教育部重点实验室,无锡,214036

2.南开大学,环境科学与工程学院,天津,300071

3.南开大学,环境科学与工程学院,天津,300071

4.江南大学,工业生物技术教育部重点实验室,无锡,214036

关键词：聚砜膜 , 吸附 , 蛋白质

Adsorption behavior of soybean protein onto polysulphone membrane

结合扫描电镜(SEM)观察,系统研究了溶液化学特性(包括pH、离子强度和给液浓度)对大豆蛋白在疏水聚砜膜上吸附行为的影响.大豆蛋白-膜间的相互作用符合静电作用机理,吸附量在其等电点附近取得最大值.低pH时随pH升高吸附量增加;高pH时随pH升高吸附量降低,离子强度降低,同性电荷物质之间的静电排斥增加吸附,也降低异性电荷物质之间的静电吸引,降低吸附.溶液化学条件同样影响大豆蛋白在聚砜膜上的吸附速率(膜污染速率).大豆蛋白吸附等温线遵循兰格缪尔方程,通过实验给出了有关的方程参数,由此可预计不同溶液化学条件的膜污染程度和速率.为了确定对流力和静电作用对大豆蛋白吸附行为的影响,进行了静态和动态吸附实验的比较,结果表明,静电作用在大豆蛋白吸附到膜表面的过程中起着关键作用,控制静电作用可以有效减轻大豆蛋白在膜表面的吸附,进而降低膜的长期通量降低.

参考文献

[1]	Hanemaaijer J H;Robbertsen T;Boomgaard Th et al.Fouling of ultrafiltration membranes:The role of protein adsorption and salt precipitation[J].Journal of Membrane Science,1989,40:199-217.
[2]	Dal-Cin M;Striez C;Tweddle T et al.Effect of adsorptive fouling on membrane performance:case study with a pulp mill effluent[J].Desalination,1995,1011:55-167.
[3]	Kimberly L. Jones;Charles R. O'Melia .Ultrafiltration of protein and humic substances: effect of solution chemistry on fouling and flux decline[J].Journal of Membrane Science,2001(2):163-173.
[4]	Bhattacharjee S;Sharma A;Bhattacharya P K .A unified model for prediction during batch cell ultrafiltration[J].Journal of Membrane Science,1996,111:243-258.
[5]	Jones Kimberly L.;O Melia Charles R. .Protein and humic acid adsorption onto hydrophilic membrane surfaces: effects of pH and ionic strength[J].Journal of Membrane Science,2000(1):31-46.
[6]	Ohmori K;Glatz C .Effects of pH and ionic strength on microfiltration of C.glutamicom[J].Journal of Membrane Science,1999,153:23-32.
[7]	Mukai Y.;Murase T.;Iritani E. .EFFECT OF PROTEIN CHARGE ON CAKE PROPERTIES IN DEAD-END ULTRAFILTRATION OF PROTEIN SOLUTIONS[J].Journal of Membrane Science,1997(1/2):271-275.
[8]	Benavente J.;Jonsson G. .Effect of adsorbed protein on the hydraulic permeability, membrane and streaming potential values measured across a microporous membrane[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,1998(2/3):255-264.
[9]	Palacio L.;Pradanos P.;Hernandez A.;Vaisanen P.;Nystrom M.;Calvo J.I. .Contact angles and external protein adsorption onto UF membranes[J].Journal of Membrane Science,1999(2):189-201.
[10]	Ricq L;Narcon S;Reggiani J C et al.Streaming potential and protein transmission ultrafiltration of single proteins in mixture:β-lactoglobulin and lysozyme[J].Journal of Membrane Science,1999,156:81-96.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网