charge effects in the adsorption of polyacrylamides

Charge effects in the adsorption of polyacrylamides

Powder Technology, 54 (1988) 77 - 83 Charge Effects in the Adsorption of Polyacrylamides on Sodium Kaolinite and Its Flocculation G. ATESOK*, P. SOMASUNDARAN and L. J. MORGAN School of Engineering and Applied Science, Columbia University, New York, NY 10027 (US.A.) (Received January 22, 1987; in revised form September 15, 1987 ) 77 SUMMARY Adsorption of relatively high molecular weight non

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charge effects in the adsorption of polyacrylamides

Charge effects in the adsorption of polyacrylamides

Adsorption of relatively high molecular weight non-ionic and anionic polyacrylamides on sodium kaolinite has been studied simultaneously with various flocculation responses (per cent solids settled, settling rate and supernatant clarity) under controlled conditions of ionic strength, temperature and agitation.

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charge effects in the adsorption of polyacrylamides

Charge Effects in the Adsorption of Polyacrylamides

Charge Effects in the Adsorption of Polyacrylamides on Sodium Kaolinite and Its Flocculation G. ATESOK*, P. SOMASUNDARAN and L. J. MORGAN School of Engineering and Applied Science, Columbia Univeraity, New York, NY 10027 (U.S.A. (Received January 22, 1987; in revised form September 15,1987) SUMMARY Adsorption of relatively high molecular

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the effect of polyacrylamide charge density and molecular

The effect of polyacrylamide charge density and molecular

The adsorption measurements were performed by batch technique to obtain equilibrium data. For isotherm studies, adsorption experiments were carried out in 250 ml flasks by adding a known concentration of flocculants to 100 ml of kaolinite dispersion (of 2.0% by volume solids).

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polyacrylamide degradation and its implications

Polyacrylamide degradation and its implications

Lee, B. & Schlautman, M. Effects of polymer molecular weight on adsorption and flocculation in aqueous kaolinite suspensions dosed with nonionic polyacrylamides. Water 7 , 5896–5909 (2015).

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effects of charge density and molecular weight

Effects of charge density and molecular weight

Effects of charge density and molecular weight of cationic polyacrylamides on growth and structural characteristics of ground calcium carbonate aggregates Article (PDF Available) · January 2016

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adsorption of cationic polyacrylamides on cellulose

Adsorption of cationic polyacrylamides on cellulose

Adsorption of Cationic Polyacrylamides on Cellulose1 TOM LINDSTK(DM Am) CHRISTER SOREMARK Swedish Forest Products Research Laboratory, Box 5604, S-114 86 Stockholm, Sweden Received June 20, 1975; accepted January 15, 1976 Rates of adsorption of cationic polyacrylamides on cellulose fibers have been measured.

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adsorption of polyacrylamides on siliceous minerals

Adsorption of polyacrylamides on siliceous minerals

The modifications in structure and surface charge induced by thermal treatment of silicon carbide particles drastically alters the adsorption properties of both neutral and charged polyacrylamides. Changes in pH and salinity have significant effects on the amount of charged polymer adsorbed onto all siliceous minerals.

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p. somasundaran - columbia university

P. SOMASUNDARAN - Columbia University

Atesok, G., P. Somasundaran, and L. J. Morgan, 'Charge Effects in the Adsorption of Polyacrylamides on Sodium Kaolinite and Its Flocculation', Powder Technology, 54 (1988), 77-83. Somasundaran, P. 'Adsorption Properties of Ca-2+ on Na-Kaolinite and Its Effect on Flocculation Using Polyacrylamides', Colloids and Surfaces, 32 (1988), 127-38.

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dye flocculation using polyampholytes and polyelectrolyte

Dye flocculation using polyampholytes and polyelectrolyte

The results are compared with homopolymers and with those obtained using nonstoichiometric polyelectrolyte–surfactant complex (PSC) dispersions with adjustable surface charge density. The polyampholytes as well as the PSC can successfully remove the dye Celliton Fast Blue (Dispers blue 3).

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nanostructure of poly(acrylic acid) adsorption layer

Nanostructure of Poly(Acrylic Acid) Adsorption Layer

The effects of solution pH, as well as polymer molecular weight and concentration, were studied. The obtained results indicated that the highest adsorption on the activated carbon surface was exhibited by PAA with lower molecular weight (i.e., 2000 Da) at pH 3.

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[pdf] polyacrylamide use for erosion and turbidity control

[PDF] Polyacrylamide Use for Erosion and Turbidity Control

Streams and lakes adjacent to construction sites are often heavily impaired by sediment and turbidity coming from areas of exposed soil. A study was conducted to determine if the application of polyacrylamide (PAM) can reduce erosion and runoff turbidity on moderate to steep slopes at construction sites. The test sites were three North Carolina Department of Transportation construction sites

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cellulose-based water purification using paper filters

Cellulose-based water purification using paper filters

2.3.1 LbL modification. The two types of paper filters, filter A and filter B, were modified by the LbL method to introduce a positive net surface charge onto the cellulose fibres. 42 The LbL fibre modification was based on a procedure described by Illergård et al., alternating the adsorption of cationic PVAm and anionic PAA. 43 The differences compared to the procedure reported by Illergård

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cationic polyacrylamide - manufacturers in germany

Cationic Polyacrylamide - Manufacturers in Germany

1. Often use powdered organic wastewater of cationic Polyacrylamide: is usually suspended in wastewater sewage flocculation and sedimentation of particles with a negative charge. Based on cationic flocculation unit in acidic or alkaline media, relying on the positive electricity is extremely effective for rapid clarification of sewage.

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molecular weight effects in guar gum adsorption

Molecular weight effects in guar gum adsorption

The effect of the molecular weight of guar gum on adsorption, talc depression, and stability of talc suspensions was studied. Four guar gum samples of different molecular weights in the range from 0.162 MDa to 1.4 MDa were used. It was also found that the intrinsic viscosities of the guar gum samples were independent of the type of background solution (NaCl, KCl, distilled water). The

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a survey on cationic polyelectrolytes and their

A survey on cationic polyelectrolytes and their

The effects of some electrolytes on flocculation with a cationic polyacrylamide. Colloid Polym Sci 1983; 261: 485–492. Google Scholar. Ariffin A, Shatat RSA, Nik Norulaini AR, Mohd Omar AK. Synthetic polyelectrolytes of varying charge densities but similar molar mass based on acrylamide and their applications on palm oil mill effluent treatment.

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p. somasundaran - columbia university

P. SOMASUNDARAN - Columbia University

Atesok, G., P. Somasundaran, and L. J. Morgan, 'Charge Effects in the Adsorption of Polyacrylamides on Sodium Kaolinite and Its Flocculation', Powder Technology, 54 (1988), 77-83. Somasundaran, P. 'Adsorption Properties of Ca-2+ on Na-Kaolinite and Its Effect on Flocculation Using Polyacrylamides', Colloids and Surfaces, 32 (1988), 127-38.

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molecular weight effects in guar gum adsorption

Molecular weight effects in guar gum adsorption

The effect of the molecular weight of guar gum on adsorption, talc depression, and stability of talc suspensions was studied. Four guar gum samples of different molecular weights in the range from 0.162 MDa to 1.4 MDa were used. It was also found that the intrinsic viscosities of the guar gum samples were independent of the type of background solution (NaCl, KCl, distilled water). The

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contributions to books :: ponisseril somasundaran

Contributions to Books :: Ponisseril Somasundaran

“Adsorption of Polyacrylamides on Hematite-and Silica – Effect of Polymer-Surfactant Interaction,” with (B.M. Moudgil), in Fundamentals of Adsorption by Engineering Foundation (1985). “Effect of Chemical Additives on the Pulp Fluidity and Grinding in Wet Batch Ball Milling,” (with A. Atli), Proc.

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processes | free full-text | evaluation of polymeric

Processes | Free Full-Text | Evaluation of Polymeric

However, it is important to carefully consider such charge effects, especially in terms of permeability; if the polymer layer is too thick (or if the average pore size in the reservoir is initially very small), the adsorption (charge) effects could adversely impact the polymer-flooding process, creating pore plugging and causing permeability

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adsorption of anionic polyacrylamide onto coal

Adsorption of Anionic Polyacrylamide onto Coal

After adsorption of PAM A401, the range and absolute value of the hydrophobic interaction V HA of the coal particles decreased, the electrostatic repulsive potential increased, and the total potential energy changed from −1.66 × 105 to −4.03 × 104 kT at the separation distance of 5 nm. For interactions between the kaolinite and coal

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journal of biotechnology - connecting repositories

Journal of Biotechnology - COnnecting REpositories

G.P. ‘t Lam et al. / Journal of Biotechnology 225 (2016) 10–17 Fig. 1. Biomass recovery as a function of the flocculant dosage at salinities of 25g/L ( ), 35g/L ( ) and 45g/L ( ). Recoveries obtained with Synthofloc 5080H in figure A, Chitosan in Figure B. All samples represent biological duplicates. Fig. 2.

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kj.tyut.edu.cn

kj.tyut.edu.cn

Capacitive behavior - Electrode material - Galvanostatic charge/discharge - Green onion - Nitrogen adsorption - Porous carbons - Specific capacitance - Surface elemental compositions 482.2 Minerals - 549.2 Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 801 Chemistry - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 951 Materials Science

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欢迎访问农业工程学报编辑部网站!

欢迎访问农业工程学报编辑部网站!

Journal of Agricultural Engineering <RECORD 1> Accession number:20121915007993 Title:Soil quality evaluation of windy desert region after coal mining subsidence based on discriminant and factor analysis

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contributions to books :: ponisseril somasundaran

Contributions to Books :: Ponisseril Somasundaran

“Adsorption of Polyacrylamides on Hematite-and Silica – Effect of Polymer-Surfactant Interaction,” with (B.M. Moudgil), in Fundamentals of Adsorption by Engineering Foundation (1985). “Effect of Chemical Additives on the Pulp Fluidity and Grinding in Wet Batch Ball Milling,” (with A. Atli), Proc.

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processes | free full-text | evaluation of polymeric

Processes | Free Full-Text | Evaluation of Polymeric

However, it is important to carefully consider such charge effects, especially in terms of permeability; if the polymer layer is too thick (or if the average pore size in the reservoir is initially very small), the adsorption (charge) effects could adversely impact the polymer-flooding process, creating pore plugging and causing permeability

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impact of anionic polyacrylamide on stability and surface

Impact of anionic polyacrylamide on stability and surface

The stability mechanism and thermal properties of the system alumina–anionic polyacrylamide (PAM) was studied. The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were examined.

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1. introduction - hindawi publishing corporation

1. Introduction - Hindawi Publishing Corporation

The effect of surface charge on the flocculation of kaolin suspensions with cationic polyacrylamides of varying molar mass but similar cationic character Colloids and Surfaces 1987 25 2–4 297 310 10.1016/0166-6622(87)80310-4 2-s2.0-0023401978 39 Cohen Stuart M. A. Scheutjens J. M. H. M. Fleer G. J. Polydispersity effects and the

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std.nankai.edu.cn

std.nankai.edu.cn

南开大学 序号 归属 accession numbler title 作者 单位 source_title publicatio volume pages issue 材料学院 20161202128428 Excellent cycling stability with high SnO<inf>2</inf>loading on a three-dimensional graphene network for lithium ion batteries

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journal of biotechnology - connecting repositories

Journal of Biotechnology - COnnecting REpositories

G.P. ‘t Lam et al. / Journal of Biotechnology 225 (2016) 10–17 Fig. 1. Biomass recovery as a function of the flocculant dosage at salinities of 25g/L ( ), 35g/L ( ) and 45g/L ( ). Recoveries obtained with Synthofloc 5080H in figure A, Chitosan in Figure B. All samples represent biological duplicates. Fig. 2.

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kj.tyut.edu.cn

kj.tyut.edu.cn

Capacitive behavior - Electrode material - Galvanostatic charge/discharge - Green onion - Nitrogen adsorption - Porous carbons - Specific capacitance - Surface elemental compositions 482.2 Minerals - 549.2 Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 801 Chemistry - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 951 Materials Science

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hydro-mechanical properties of calcigel-polyacrylamide

Hydro-mechanical properties of Calcigel-polyacrylamide

In recent years, research on clay-polymer composites has developed significantly. In various fields of research, i.e. polymer and colloid science, agriculture and, most recently, geotechnical and geoenvironmental engineering, several beneficial properties of composites have been demonstrated, e.g. enhanced safety and strength properties of the polymeric materials (e.g. Usuki et al., 1995; Fu

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