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sodium dodecyl adsorption

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sodium dodecyl adsorption

Modelling, kinetics and equilibrium studies of crystal ...

Sodium dodecyl sulfate (NaC 12 H 25 SO 4, molecular weight 283.38 g mol –1 and 85% purity) was also purchased from Merck. Supplementary Material Figure S1 shows the structure of the hyamine and SDS surfactants. Crystal violet (C 25 H 30 N 3 Cl) was also purchased from Merck.

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Mixed hemimicelles solid-phase extraction based on sodium ...

In this study, mixed hemimicelles solid-phase extraction (MHSPE) based on sodium dodecyl sulfate (SDS) coated nano-magnets Fe 3 O 4 was investigated as a novel method for the extraction and separation of four banned cationic dyes, Auramine O, Rhodamine B, Basic orange 21 and Basic orange 22, in condiments prior to HPLC detection. The main factors affecting the extraction of …

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Adsorption of Sodium Dodecyl Sulfate on Functionalized ...

We report on the adsorption of sodium dodecyl sulfate (SDS) onto functionalized graphene sheets (FGSs) in an aqueous system, measured at broad SDS and FGS concentration ranges by conductometric surfactant titration. At dilute SDS concentrations (<12 μM in bulk solution), there is evidence of a counterion exchange between hydronium ions (from the dissociation of acidic chemical …

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Adsorption of sodium dodecyl sulphate at the silicone ...

The adsorption of sodium dodecyl sulphate (SDS) was studied at silicone fluid/water interfaces at 297 K, as a function of siloxane chain length, surfactant concentration, in the presence of electrolytes and in mixtures with fatty alcohols or silanols. Although the interfacial tensions against water of dimethylpolys

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Preparation and adsorption efficiency of sodium dodecyl ...

This exploratory research focused on the adsorption of Sr(II) on the sodium dodecyl sulfate modified palygorskite (SDS/Pal). The ion exchange reactions existed, and the elements Mg, Al, Si and Fe on the Pal were exchanged by element Sr(II). The adsorption process could be well described by the pseudo-second-order kinetics and Langmuir model. The adsorption capacity increased from …

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Ellipsometric observation of the adsorption of sodium ...

Ellipsometric Observation of the Adsorption of Sodium Dodecyl Sulfate Gregory J. Besio,t Robert K. Prud'homme, and Jay B. Benziger* Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544 Received March 16, 1987.

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Adsorption of Cu(II) by phosphogypsum modified with sodium ...

Phosphogypsum (PG) is a solid waste generated during the wet production of phosphoric acid, and stockpiling PG causes serious pollution to the environment. Therefore, we prepared an adsorption material modified with sodium dodecyl benzene sulfonate (SDBS) based on …

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Adsorption of equimolar aqueous sodium dodecyl sulphate ...

Adsorption of equimolar aqueous sodium dodecyl sulphate/dodecyl trimethylammonium bromide mixtures at solution/air and solution/oil interfaces. N. Mucic 1, G. Gochev 1, J. Won 1, V. Ulaganathan 1, H. Fauser 2, A. Javadi 1,3, E. V. Aksenenko 4, J. Krägel 1 & R. Miller 1

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Adsorption of Anionic-Nonionic and Cationic-Nonionic ...

Another feature to be noted on the sodium dodecyl sulfate (C 12SO.Na) adsorption iso-therm is the decrease in the slope of the iso-therm as the molar ratio of octaethylene glycol mono-n-dodecyl ether (CI2EO.) is increased. For adsorption of pure C12S0.Na on kaolinite, a slope of I …

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Competitive Adsorption of Neutral Comb Polymers and Sodium ...

Effects of Aggregates on Mixed Adsorption Layers of Poly(ethylene imine) and Sodium Dodecyl Sulfate at the Air/Liquid Interface. Langmuir 2009, 25 (7), 4036-4046.

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Enhancing the rheology and leachability of fly ash slurry ...

The adsorption behavior of sodium dodecyl benzenesulfonate (NaDDBS) on a raw (as received) coal sample and its demineralized variety with 11.3% and 1.2% ash contents respectively has been studied ...

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Magnetic nickel cobalt sulfide/sodium dodecyl benzene ...

The possible reason is that the surfactants, including sodium dodecyl sulfate (SDS), hexadecyltrimethyl ammonium bromide (CTAB) and so on, could modify the size, shape and surface charge of nanomaterials, thereby improving the adsorption performance of nanocomposites, which is also reported by other studies, . This states that the surfactants ...

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Adsorption of Sophorolipid Biosurfactants on Their Own and ...

surfactant sodium dodecyl benzene sulfonate (LAS) has been measured atthe air/waterinterface by neutron reflectivity, NR. The AS and LS sophorolipids adsorb with Langmuir-like adsorption isotherms. The more hydrophobic LS is more surface active than the AS, with a lower critical micellar concentration, CMC, and stronger surface adsorption ...

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CiteSeerX — 1 Adsorption of Sodium Dodecyl Sulfate and ...

sodium dodecyl sulfate sodium dodecyl adsorption data adsorption isotherm langmuir isotherm vinyl chloride sodium dodecyl benzenesulfonate various temperature slight s-shape surfactant molecule colloid interface sci general adsorption equation surface tension titration curve conductometric titration

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pH Sensitive Adsorption of Polypeptide/Sodium Dodecyl ...

The surface tension and adsorption behavior of polymer/surfactant mixtures of polyethyleneimine (PEI)/sodium dodecyl sulfate (SDS) is strongly dependent on pH. At both low and high pH, a strong ...

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Adsorption mechanism of sodium dodecyl benzene sulfonate ...

The adsorption mechanisms between sodium dodecyl benzene sulfonate (SDBS, an anionic surfactant) and carbon black particles in suspension were investigated. The influence of inorganic salt (NaCl) was also considered. As results showed, hydrophobic interactions contributed to the strong adsorption between SDBS and carbon black particles in the ...

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Sodium Dodecyl Sulfate Modified-Zeolite as a Promising ...

Adsorption Natural Organic Matter Sodium Dodecyl Sulfate Modified Zeolites 1. Background Humic compounds are considered as the biggest portion of natural organic matter (NOM), found in many surface water sources (1-3).NOM is one of the main components of organic matter, which is form the major portion of dissolved organic materials.

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Adsorption and desorption dynamics of sodium dodecyl ...

Adsorption and desorption dynamics of sodium dodecyl sulfate at the octadecylsilane layer on the pore surface of a mesoporous silica film observed in-situ by optical waveguide spectroscopy. Yamaguchi A(1), Arafune H, Hotta K, Itoh T, Teramae N.

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Effect of Bolaform Counterions on the Adsorption of Sodium ...

The effect of quaternary ammonium-based bolaform counterions (Bolan-series where n is the number of carbon atoms between the heads) on the adsorption of sodium dodecyl sulfonate (SDDS) at the air/water interface has been studied using surface tension measurements. The results showed that the Bolan counterions strongly interacted with SDDS even at very low concentrations. …

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Carbon dioxide adsorption on a modified zeolite with ...

Sodium dodecyl sulfate (SDS) surfactant is used and simulations at different SDS concentrations were conducted. The results show that adsorption of the gas is influenced by the amount of SDS on the zeolite surface. In addition, gas retention inside and outside the solid is observed and it strongly depends on the free sodium ions in the zeolite.

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The adsorptive behaviour of kaolinite to sodium dodecyl ...

Sodium dodecyl benzene sulphonate (SDBS) is a commonly used anionic surfactant 5, discovering the adsorption characteristics of SDBS on the …

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Adsorption and Aggregation Activity of Sodium Dodecyl ...

Adsorption and Aggregation Activity of Sodium Dodecyl Sulfate and Rhamnolipid Mixture Diana Man´ko1 • Anna Zdziennicka1 • Bronisław Jan´czuk1 Received: 15 April 2016/Accepted: 28 November 2016/Published online: 10 December 2016 The Author(s) 2016. This article is published with open access at Springerlink

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Influence of sodium dodecyl sulfate coating on adsorption ...

Adsorption isotherms of methylene blue adsorption onto biochar and sodium dodecyl sulfate-coated biochar. The Langmuir model, which proposes a theory to describe the adsorption of adsorbate and the surface of the adsorbent, assumes monolayer coverage of adsorbate over a homogenous adsorbent.

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Structure of Sodium Dodecyl Sulfate and Polyacrylic Acid ...

Figure 2. Effect of sodium dodecyl sulfate adsorption on the rotational correlation time of 12-doxyl stearic acid adsorbed on alumina in water (0, bound; 0, adsorbed). days on a wrist-action shaker to cause neither any change:~ in the spectral characteristics nor any detectable probe in; the supernatant. Evidently, cleavage of the ester bond is

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Temperature-dependent phase transition and desorption free ...

Adsorption of surfactants at the water/vapor interface depends upon their chemical potential at the interface, which is generally temperature-dependent. Molecular dynamics simulations have been performed to reveal temperature influences on the microstructure of sodium dodecyl sulfate (SDS) molecule adsorption layer.

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(PDF) Surface tension isotherms, adsorption dynamics and ...

Surface tension isotherms, adsorption dynamics and dilational visco-elasticity of sodium dodecyl sulphate solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2010. Jordan Petkov. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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Use of a Mixture of n -Dodecyl-β- d -maltoside and Sodium ...

Effect of n-Dodecyl-β-D-maltoside and Sodium Dodecyl Electroosmotic Flow Measurement. EOF mobilities are Sulfate on Electroosmotic Flow. It has been reported that DDM measured using a current monitoring method24 in straight PDMS and SDS form mixed micelles in a wide range of molar ratios channels that are 6 cm long, 100 µm wide, and 15 µm high.

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Adsorption of sophorolipid biosurfactants on their own and ...

Adsorption of sophorolipid biosurfactants on their own and mixed with sodium dodecyl benzene sulfonate, at the air/water interface. Chen M(1), Dong C, Penfold J, Thomas RK, Smyth TJ, Perfumo A, Marchant R, Banat IM, Stevenson P, Parry A, Tucker I, Campbell RA.

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Adsorption of Sodium Dodecyl Sulfate on Functionalized ...

Adsorption of Sodium Dodecyl Sulfate on Functionalized Graphene Measured by Conductometric Titration Andrew G. Hsieh,† Christian Punckt,†,‡ Sibel Korkut,†,‡ and Ilhan A. Aksay*,† †Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States ‡Vorbeck Princeton Research Center, Vorbeck Materials Corp., 11 Deerpark Drive ...

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Advances in adsorption of surfactants and their mixtures ...

For adsorption of ionic surfactants on oppositely charged surface, the adsorption isotherm called "Somasundaran–Fuerstenau" isotherm, plotted on a log–log scale, is typically characterized by four regions .The main features of this type of adsorption isotherm are illustrated in Fig. 4 for the adsorption of sodium dodecyl sulfate on alumina :

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