Adsorption of polyacrylamide to Na kaolinite: Correlation between clay structure and surface properties

Pefferkorn, E.; Nabzar, L.; Carroy, A.

doi:10.1016/0021-9797(85)90384-4

Cited by 65 publications

(25 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pefferkorn et al (4) report a series of adsorption isotherms the results of which show a simple Langmuir-type response as a function of flocculant dosage. The difference between Pefferkorn et al (4) and this study may be the result of many contributing factors, the most predominant being the lower solid loadings examined, 0.2 wt.% instead of 0.77 wt.% (this study), the use of 1-day adsorption equilibrium times, and the slightly different shear environment. Therefore, the effects of surface area trapped within the floc structure would either be less pronounced or nonexistent.…”

Section: Discussionmentioning

confidence: 97%

Kinetics of Adsorption of High Molecular Weight Anionic Polyacrylamide onto Kaolinite: The Flocculation Process

Taylor

Morris

Self

et al. 2002

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 97%

Kinetics of Adsorption of High Molecular Weight Anionic Polyacrylamide onto Kaolinite: The Flocculation Process

Taylor

Morris

Self

et al. 2002

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…All in-place quite comparable to those of natural sands (Zitha et al, 1995). Also, the possibility of 8 hydrogen bond formation with silica has been proposed to explain the high affinity of 9 polymers for many reservoir rocks (Pefferkorn et al, 1985). Fig.…”

mentioning

confidence: 99%

Rate-dependent polymer adsorption in porous media

Idahosa

Oluyemi

Oyeneyin

et al. 2016

Journal of Petroleum Science and Engineering

View full text Add to dashboard Cite

“…h r ϭh pl /h m (2) where h pl and h m are plastic and medium viscosities, which may reflect a change of flow unit. At low concentration of PVP (Ͻ0.1%), relative and plastic viscosity diminishes linearly with a concentration of SLI, as shown in Fig.…”

Section: (D) Dispersion Of Kaolinitementioning

confidence: 99%

“…PAA proved a higher suspension stability at low or high concentration than at a medium concentration. 1,2) The sodium salt of polyacrylic acid (Na-PAA) is adsorbed by alumina sites on the edge of kaolinite particles but not on the site of silica on basal plane of particles. 15) The acid form of carboxylic acid of PAA can be adsorbed via hydrogen bonding between the carbonyl group of carboxylic acid and the hydroxyl group on a surface of the kaolinite basal plane.…”

mentioning

confidence: 99%

Effect of Polyvinylpyrrolidone and Sodium Lauroyl Isethionate on Kaolinite Suspension in an Aqueous Phase

Kwan

Chu

Shimabayashi

2006

CHEMICAL & PHARMACEUTICAL BULLETIN

View full text Add to dashboard Cite

Kaolinite is a very useful raw material in industries, such as paints, paper, plastics, cosmetics, pharmaceuticals, and ceramics. Rheological properties and/or suspension stability of kaolinite are crucial factors in these products. The rheology and suspension of kaolinite has been studied intensively so far.1-8) Nakagaki M., et al. [3][4][5] provided evidences that the divalent cations exert stronger effect than monovalent cations on a reduced viscosity and Bingham yield value of the suspension. In an aqueous suspension of kaolinite, the -NH group of urea, hydrazine and formamide, and the -OH group of alcohols form the hydrogen bonding with an -SiO group on kaolinite surface to alter fluidity of a suspension. 10,11) In this situation divalent cations manifest stronger effect than monovalent ones on the Bingham yield value.3-6) The edge(ϩ)/face(Ϫ) inter-particle interactions promote aggregation and increase the viscosity of a suspension. On the other hand, adsorption of multivalent anions decreases charge density on the edge, diminishing edge(ϩ)/face(Ϫ) interparticle interaction, which results in reduction of the viscosity. 7)Johnson indicated that the kaolinite edge contains both silica-and alumina-like sites positively charged at low pH, but bears a negative charge at high pH. Kaolinite face contains by contrast only silica-like charge sites and remains negatively charged within a wide pH range. 12,13) Heath and Todros 14) derived both a Bingham yield value and viscosity of kaolin suspension as a function of pH and electrolyte concentration. Their results showed a minimum viscosity around pH 7 and they assumed that the isoelectric point of particle's edges was around pH 7. Adsorption of polyacrylic acid (PAA) on kaolinite particles affected flocculation/dispersion of a suspension solution. PAA proved a higher suspension stability at low or high concentration than at a medium concentration.1,2) The sodium salt of polyacrylic acid (Na-PAA) is adsorbed by alumina sites on the edge of kaolinite particles but not on the site of silica on basal plane of particles.15) The acid form of carboxylic acid of PAA can be adsorbed via hydrogen bonding between the carbonyl group of carboxylic acid and the hydroxyl group on a surface of the kaolinite basal plane.16) Gebhardt and Fuerstenau 17) measured the adsorption amount of PAA by silica. Conceicao et al. 18) probed influence of carboxymethylcellulose on rheological behavior of kaolinite suspension in the presence of ammonium polycarbonate as a dispersant. The presence of carboxymethylcellulose in kaolinite suspension conferred a shear thinning behavior, especially in the low shear rate range, followed by a trend to Newtonian fluid behavior. Na kagaki M., et al. 3,4) pointed out that polyvinylpyrrolidone (PVP) acts on kaolinite suspension as a flocculating agent at concentration lower than 2ϫ10 Ϫ3 %, but as a dispersing agent above that point. Yalcin et al. 19) studied the influence of surfactants (sodium or ammonium dodecyl sulfate, SDS or ADS) on flow behavior of ben...

show abstract

Adsorption of polyacrylamide to Na kaolinite: Correlation between clay structure and surface properties

Cited by 65 publications

References 21 publications

Kinetics of Adsorption of High Molecular Weight Anionic Polyacrylamide onto Kaolinite: The Flocculation Process

Kinetics of Adsorption of High Molecular Weight Anionic Polyacrylamide onto Kaolinite: The Flocculation Process

Rate-dependent polymer adsorption in porous media

Effect of Polyvinylpyrrolidone and Sodium Lauroyl Isethionate on Kaolinite Suspension in an Aqueous Phase

Contact Info

Product

Resources

About