Abstract
The adsorption measurements of hydrolyzed polyacrylamide (HPAM) onto hematite suspension are carried out to study the dynamics of the polymer adsorption onto the suspension particles and to investigate the mode of the polymer adsorption. The polymer is found to show much affinity for the adsorption because of the opposite charges possessed by the polymeric flocculant and the suspension particles. Various adsorption parameters such as adsorption coefficient, the rate constants for the adsorption and desorption, are evaluated with the help of a recently proposed kinetic scheme. It is found that the extent of adsorption and the adsorption rate are adequately affected by increasing the pH of the suspension while, unexpectedly, the adsorption is found to show only a marginal increase on addition of Na2SO4. Both the amount of the adsorbed polymer and the adsorption rate are also found to increase with the degree of hydrolysis of the polyelectrolyte.
Similar content being viewed by others
References
Lee LT, Rahbari R, Lecourtier J, Chauveteau G (1991) J Colloid Interface Sci 147:352
Chibowski Stanislaw (1990) J Colloid Interface Sci 140:440
Blaakmeer J, Bohmer MR, Cohen Stuart MA, Fleet GJ (1990) Macromolecules 23:2301
Adamson AW (1990) Physical Chemistry of Surfaces, John Wiley, New York
Bajpai UDN, Bajpai AK (1993) Polym Int 32:43
Bajpai AK (1994) J Appl Polym Sci 51:651
Bajpai AK (1994) Polym Int 33:315
Bajpai AK, Bajpai SK (1995) Iranian Journal of Polymer Science and Technology 4:10
Kulkarni RA, Gundiah S (1984) Makromol Chem 185:957
Gunari AA, Gundiah S (1981) Makromol Chem 182:1
Scoggins MW, Miller JW (1979) Soc Pet Eng J 19:151
Norde W (1986) Adv Colloid Interface Sci 25 Z:267
Pefferkorn E, Jean-Chronberg AC, Chauveteau G, Varoqui R (1990) J Colloid Interface Sci 137:66
Meadown J, Williams PA, Garvey MJ, Harrop RA, Phillips GO (1988) Colloids Surfaces 32:275
Weight JA, Harrop RA, Willaims PA, Pars G, Robb ID (1987) Colloids Surfaces 24:249
Lee LT, Somasundaran PJ (1991) Colloid Interface Sci 142:470
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bajpai, A.K., Bajpai, S.K. Dynamic measurements of adsorption of hydrolyzed polyacrylamide (HPAM) onto hematite. Colloid Polym Sci 273, 1028–1032 (1995). https://doi.org/10.1007/BF00657669
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00657669