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溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响

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李秀芬, 傅学起. 溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响[J]. 环境化学, 2003, 22(1): 43-47.
引用本文: 李秀芬, 傅学起. 溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响[J]. 环境化学, 2003, 22(1): 43-47.
shu
LI Xiufen, FU Xueqi. EFFECT OF SOLUTION CHEMISTRY ON GLUTAMIC ACID BACTERIA ADSORPTION ONTO POLYSULFONE MEMBRANE[J]. Environmental Chemistry, 2003, 22(1): 43-47.
Citation: LI Xiufen, FU Xueqi. EFFECT OF SOLUTION CHEMISTRY ON GLUTAMIC ACID BACTERIA ADSORPTION ONTO POLYSULFONE MEMBRANE[J]. Environmental Chemistry, 2003, 22(1): 43-47.
shu

溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响

  • 1.

    南开大学环境科学与工程学院, 天津, 300071

EFFECT OF SOLUTION CHEMISTRY ON GLUTAMIC ACID BACTERIA ADSORPTION ONTO POLYSULFONE MEMBRANE

  • 1.

    Department of EnvironmentalSciences, Nankai University, Tianjin, 300071

  • 摘要: 研究了溶液化学特性(包括pH值、离子强度和给液浓度)对谷氨酸菌在疏水性聚砜膜上吸附行为的影响.结果表明:谷氨酸菌在聚砜膜上的吸附符合静电作用机理;菌体在等电点时发生絮凝, 是影响吸附量的重要原因;pH值愈高, 谷氨酸菌的吸附量愈小;离子强度降低相同电荷物质之间的静电排斥, 增加吸附, 同时也降低相反物质电荷之间的静电吸引, 从而降低吸附;谷氨酸菌浓度愈大, 平衡吸附量也愈大.
    Abstract: The effect of solution chemistry includingpH,ionic strength and bacterialcellconcentration on the adsorption of bacterialcells onto a hydrophobic polysulfone membrane were studied.As a result,the adsorption behavior was in good agreement with electrostatic interaction mechanism.At isoelectric point(IEP),bacterialcells occurred aggregation which played an important role in adsorption.With increasingpH,adsorption decreased.Increased salt concentration reduced electrostatic repulsion between like-charged materialand adsorption increased.Increased ionic strength also reduced electrostatic attraction between oppositely charged materialso adsorption decreased.The adsorption increased with cellconcentration increasing.
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  • [1] 韩式荆,李书申,吴开芬,超滤法分离味精废水的菌体.环境化学,1989,8(6):33-40
    [2] MarshllA D,Munro P A,Tragardh G,The Effect of Protein Foulingin Microfiltration and Ultrafiltraion on Permeate Flux,Protein Retention and Selectivity:A Literature Review.Desalination,1993, 91:65-108
    [3] 王湛,膜分离技术基础.北京:化学工业出版社,2000,243-248
    [4] 于信令,尤新,王凤义,味精工业手册.北京:中国轻工业出版社,1995,575-576
    [5] Polacio L,Calvo J I,Pradanos P.Contact Angles and ExternalProtein Adsorption onto UF Membranes.J.Membr.Sci.,1999

    ,152:189-201

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  • 收稿日期:  2002-01-23
李秀芬, 傅学起. 溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响[J]. 环境化学, 2003, 22(1): 43-47.
引用本文: 李秀芬, 傅学起. 溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响[J]. 环境化学, 2003, 22(1): 43-47.
shu
LI Xiufen, FU Xueqi. EFFECT OF SOLUTION CHEMISTRY ON GLUTAMIC ACID BACTERIA ADSORPTION ONTO POLYSULFONE MEMBRANE[J]. Environmental Chemistry, 2003, 22(1): 43-47.
Citation: LI Xiufen, FU Xueqi. EFFECT OF SOLUTION CHEMISTRY ON GLUTAMIC ACID BACTERIA ADSORPTION ONTO POLYSULFONE MEMBRANE[J]. Environmental Chemistry, 2003, 22(1): 43-47.
shu

溶液化学特性对谷氨酸菌在聚砜膜上吸附行为的影响

  • 1. 南开大学环境科学与工程学院, 天津, 300071
  • 收稿日期:  2002-01-23

摘要: 研究了溶液化学特性(包括pH值、离子强度和给液浓度)对谷氨酸菌在疏水性聚砜膜上吸附行为的影响.结果表明:谷氨酸菌在聚砜膜上的吸附符合静电作用机理;菌体在等电点时发生絮凝, 是影响吸附量的重要原因;pH值愈高, 谷氨酸菌的吸附量愈小;离子强度降低相同电荷物质之间的静电排斥, 增加吸附, 同时也降低相反物质电荷之间的静电吸引, 从而降低吸附;谷氨酸菌浓度愈大, 平衡吸附量也愈大.

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