STABILITY OF METAL OXIDE SUSPENSION IN THE CATIONIC POLYACRYLAMIDE PRESENCE

Abstract

The stability of metal oxide aqueous suspension in the cationic polyacrylamide (PAM) presence was examined. For this purpose the turbidimetry method was applied. Chromium(III) oxide, zirconium(IV) oxide and aluminium(III) oxide were selected for experiments. The ionic polyacrylamide with molecular weight 7 000 000 Da and containing 50% of cationic groups was applied as an adsorbate. To explain the obtained changes in the stability parameters of metal oxide suspensions in the polymer presence the spectrophotometric and electrokinetic measurements were performed. They enable determination of PAM adsorbed amount, as well as surface charge density and zeta potential of solid particles without and covered with polymeric layers. The analysis of these data led to the description of the most probable stability mechanism of solid suspension containing cationic polyacrylamide

Keywords

• metal oxide,cationic polyacrylamide,electrokinetic properties,suspension stability,polymer adsorption

References

1. AMUDA, O.S., AMOO, I.A., IPINMOROTI, K.O., AJAYI, O.O. 2006, Coagulation/flocculation process in the removal of trace metals present in industrial wastewater. Journal of Applied Sciences and Environmental Management, 10: 159-162. BARAKAT, M.A. 2011, New trends in removing heavy metals from industrial wastewater. Arabian Journal of Chemistry, 4: 361-377. CHIBOWSKI, S., WIŚNIEWSKA, M. 2001, Study of the adsorption mechanism and the structure of adsorbed layers of polyelectrolyte at metal oxide-solution interface. Adsorption Science & Technology, 19: 409-421. ENTRY, J.A., SOJKA, R.E. 2000, The efficacy of polyacrylamide and related compounds to remove microorganisms and nutrients from animal wastewater. Journal of Environmental Quality, 29: 1905-1914. HUNTER, R.J. 1981, Zeta Potential in Colloid Science. Academic Press, New York. JANUSZ, W. 1999, Electrical double layer at the metal oxide/electrolyte interface in interfacial forces and fields: theory and applications. Surfactant Science Vol. 85, M. Dekker, New York. JIANG, Z., ZHU, J. 2014, Cationic polyacrylamide: synthesis and application in sludge dewatering treatment. Asian Journal of Chemistry, 26: 629-633. SCOGGINS, M.W., MILLER, J.W. 1975, Spectrophotometric determination of water soluble organic amides. Analytical Chemistry, 47:152-154. SIMPSON, D.J., THILAGAM, A., CAVALLARO, G.P., KAPLUN, K., GERSON, A.R. 2011, SiO2 coated pure and doped titania pigments: low temperature CVD deposition and quantum chemical study. Physical Chemistry Chemical Physics, 13: 21132-21138. SKWAREK, E. 2015, Thermal analysis of hydroxyapatite with adsorbed oxalic acid. Journal of Thermal Analysis and Calorimetry, 122: 33-45. SNABRE, P., MILLS, P. 1994, Settling of the suspension of hard spheres. Europhysical Letters, 25: 651-656.SOJKA, R.E., BJORNEBERG, D. L., ENTRY, J. A., LENTZ, R. D., ORTS, W. J. 2007, Polyacrylamide in agriculture and environmental land management. Advances in Agronomy, 92: 75-162. TERPIŁOWSKI, K., WIŚNIEWSKA, M., ZARKO, V. 2015, Influence of solution pH, supporting electrolyte presence and solid content on the stability of aqueous nanosilica suspension. Journal of Industrial and Engineering Chemistry, 30: 71-76. VARGAS-REUS, M.A., MEMARZADEH, K., HUANG, J., REN, G.G., ALLAKER, R.P. 2012, Antimicrobial activity of nanoparticulate metal oxides against peri-implantitis pathogens. International Journal of Antimicrobial Agents, 40: 135-139. WAWRZKIEWICZ, M., WIŚNIEWSKA, M., GUN’KO, V.M., ZARKO, V.I. 2015, Adsorptive removal of acid, reactive and direct dyes from aqueous solutions and wastewater using mixed silica-alumina oxide. Powder Technology, 278: 306-315. WIŚNIEWSKA, M. 2012, The temperature effect on the adsorption mechanism of polyacrylamide on the silica surface and its stability. Applied Surface Science, 258: 3094-3101.