Counterion effects on protein adsorption equilibrium and kinetics in polymer-grafted cation exchangers

2012 ◽  
Vol 1253 ◽  
pp. 83-93 ◽  
Author(s):  
Ernie X. Perez Almodovar ◽  
Bianca Glatz ◽  
Giorgio Carta
Keyword(s):  
Protein Adsorption ◽  
Adsorption Equilibrium ◽  
Cation Exchangers ◽  
Equilibrium And Kinetics ◽  
Adsorption Equilibrium And Kinetics

scholarly journals Mesocellular Silica Foams (MCFs) with Tunable Pore Size as a Support for Lysozyme Immobilization: Adsorption Equilibrium and Kinetics, Biocomposite Properties

2020 ◽  
Vol 21 (15) ◽  
pp. 5479
Author(s):  
Agnieszka Chrzanowska ◽  
Anna Derylo-Marczewska ◽  
Malgorzata Wasilewska
Keyword(s):  
Pore Size ◽  
Protein Adsorption ◽  
Pore Diameter ◽  
Adsorption Equilibrium ◽  
Thermal Characteristics ◽  
Equilibrium And Kinetics ◽  
Potential Applications ◽  
Adsorption Equilibrium And Kinetics ◽  
Loading Amount ◽  
Mesocellular Silica Foams

The effect of the porous structure of mesocellular silica foams (MCFs) on the lysozyme (LYS) adsorption capacity, as well as the rate, was studied to design the effective sorbent for potential applications as the carriers of biomolecules. The structural (N2 adsorption/desorption isotherms), textural (SEM, TEM), acid-base (potentiometric titration), adsorption properties, and thermal characteristics of the obtained lysozyme/silica composites were studied. The protein adsorption equilibrium and kinetics showed significant dependence on silica pore size. For instance, LYS adsorption uptake on MCF-6.4 support (pore diameter 6.4 nm) was about 0.29 g/g. The equilibrium loading amount of LYS on MCF-14.5 material (pore size 14.5 nm) increased to 0.55 g/g. However, when the pore diameter was larger than 14.5 nm, the LYS adsorption value systematically decreased with increasing pore size (e.g., for MCF-30.1 was only 0.27 g/g). The electrostatic attractive interactions between the positively charged lysozyme (at pH = 7.4) and the negatively charged silica played a significant role in the immobilization process. The differences in protein adsorption and surface morphology for the biocomposites of various pore sizes were found. The thermal behavior of the studied bio/systems was conducted by TG/DSC/FTIR/MS coupled method. It was found that the thermal degradation of lysozyme/silica composites was a double-stage process in the temperature range 165–420–830 °C.

Adsorption Equilibrium and Kinetics of CO2 and H2O on Activated Carbon

2012 ◽  
Vol 27 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Dong XU ◽  
Jun ZHANG ◽  
Gang LI ◽  
Penny XIAO ◽  
Paul WEBLEY ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Equilibrium ◽  
Equilibrium And Kinetics ◽  
Adsorption Equilibrium And Kinetics ◽  
Kinetics Of

Adsorption Equilibrium and Kinetics of CO2on Chromium Terephthalate MIL-101

2011 ◽  
Vol 25 (2) ◽  
pp. 835-842 ◽  
Author(s):  
Zhijuan Zhang ◽  
Sisi Huang ◽  
Shikai Xian ◽  
Hongxia Xi ◽  
Zhong Li
Keyword(s):  
Adsorption Equilibrium ◽  
Equilibrium And Kinetics ◽  
Adsorption Equilibrium And Kinetics ◽  
Kinetics Of
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