Activation thermodynamics of virus adsorption to solids.

Applied and Environmental Microbiology
D R Preston, S R Farrah

Abstract

The kinetics of bacteriophage MS2, T2, and f2 adsorption to powdered nitrocellulose and disrupted Seitz S1 filters at pH 7 were determined as a function of temperature. Data from these studies were combined with data produced in a previous study on MS2 adsorption to clay by Stagg et al. (Appl. Environ. Microbiol. 33:385-391, 1977). These workers studied the adsorption of MS2 to bentonite clay as a function of temperature. Data from both this previous study and the current one were used to calculate the thermodynamic parameters of virus adsorption. The results show that adsorption of bacteriophages to the solids tested is a physical process (energy of activation, less than 40 kcal [168 J]/mol) rather than a chemical process (energy of activation, greater than 40 kcal/mol). The free energy of activation showed a high negative correlation (r = -0.904, r2 = 0.817) with the percentage of virus adsorption to the solids tested. The energy of activation was highly negatively correlated with the percentage of virus adsorption to nitrocellulose and clay (r = -0.913, r2 = 0.834) but poorly correlated with the percentage of virus adsorption to disrupted Seitz S1 filters (r = -0.348, r2 = 0.121). In general, under conditions in which the pe...Continue Reading

References

Mar 1, 1979·Applied and Environmental Microbiology·M D Sobsey, B L Jones
Feb 1, 1977·Applied and Environmental Microbiology·C H StaggC H Ward
Jan 1, 1984·Advances in Applied Microbiology·C P Gerba
Feb 1, 1981·Proceedings of the National Academy of Sciences of the United States of America·S R FarrahL O Ingram
Feb 1, 1983·Applied and Environmental Microbiology·P A Shields, S R Farrah
Mar 1, 1982·Applied and Environmental Microbiology·S R Farrah
Aug 1, 1981·Environmental Science & Technology·C P GerboG F Bogdan

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Citations

Sep 1, 1991·Applied and Environmental Microbiology·S R FarrahV Vasuhdivan

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