Removal of Pyrethrin from Aqueous Effluents by Adsorptive Micellar Flocculation

The equilibrium adsorption of pyrethrin onto aggregates formed by the flocculation of micelles of the surfactant sodium dodecyl sulphate (SDS) with aluminium sulphate is reported. The experimental results were analysed using different adsorption isotherms (Langmuir, Freundlich, Redlich-Peterson, Sips, Radke-Prausnitz, Temkin, linear equilibrium, and the Dubin-Radushkevich isotherms). The Freundlich and linear equilibrium isotherms best describe the adsorption of pyrethrin onto SDS micellar flocs, with the Freundlich adsorption constant,KF, and the mass distribution coefficient,KD, of 64.266 ((mg/g)(L/mg)1/n) and 119.65 L/g, respectively. Applicability of the Freundlich adsorption model suggests that heterogeneous surface adsorption affects the adsorption. The mean free energy value estimated using the Dubinin-Radushkevich isotherm was 0.136 kJ/mol indicating that physisorption may be predominant in the adsorption process.

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A comparative study of Critical Micelle Concentration (CMC) and Free Energy of Micellization of cationic surfactant and anionic surfactant in different composition of methanol-water mixed solvent media by conductometric method at 308.15 K

BIBECHANA ◽

10.3126/bibechana.v8i0.4883 ◽

2012 ◽

Vol 8 ◽

pp. 37-45 ◽

Cited By ~ 2

Author(s):

Sujit Kumar Shah ◽

Tulsi Prasad Niraula ◽

Ajaya Bhattarai ◽

Sujit Kumar Chattarjee

Keyword(s):

Free Energy ◽

Critical Micelle Concentration ◽

Anionic Surfactant ◽

Sodium Dodecyl Sulphate ◽

Mixed Solvent ◽

Specific Conductivity ◽

Sodium Dodecyl ◽

Ammonium Bromide ◽

Volume Fractions ◽

Free Energy Of Micellization

Precise measurements on the specific conductivity of cationic surfactant (Dodecyltrimethyl ammonium bromide) and anionic surfactant (Sodium Dodecyl Sulphate) in methanol water mixed solvent media containing 0.1, 0.2 and 0.3 volume fractions of methanol are reported at 308.15 K. Specific conductivities of Dodecyltrimethyl ammonium bromide and Sodium Dodecyl Sulphate increase with increase in concentration and decrease with increase in the volume fractions of methanol. Critical micelle concentration (cmc) increases with increase in volume fraction of methanol in case of both surfactants. Free energy of micellization (ΔGºm) has been calculated. Increase in cmc with increase in volume fractions of methanol has been explained in terms of breaking of structure of water due to co-solvent effect.Keywords: Critical micelle concentration; methanol-water mixed solvent media; Specific conductivity; Dodecyltrimethylammonium Bromide; Sodiumdodecyl SulphateDOI: http://dx.doi.org/10.3126/bibechana.v8i0.4883 BIBECHANA 8 (2012) 37-45

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Phosphate Adsorption from Aqueous Solution Using Electrospun Cellulose Acetate Nanofiber Membrane Modified with Graphene Oxide/Sodium Dodecyl Sulphate

Membranes ◽

10.3390/membranes11070546 ◽

2021 ◽

Vol 11 (7) ◽

pp. 546

Author(s):

Nur Ain Atiqah Mohd Amin ◽

Mohd Akmali Mokhter ◽

Nurrulhidayah Salamun ◽

Wan M. Asyraf Wan Mahmood

Keyword(s):

Graphene Oxide ◽

Cellulose Acetate ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Phosphate Removal ◽

Phosphate Adsorption ◽

Hydroxyl Groups ◽

Order Kinetic ◽

Adsorption Model ◽

High Concentration

Eutrophication and water pollution caused by a high concentration of phosphate are two concerning issues that affect water quality worldwide. A novel cellulose-based adsorbent, cellulose acetate/graphene oxide/sodium dodecyl sulphate (CA/GO/SDS), was developed for water treatment. A 13% CA solution in a mixture of acetone:dimethylacetamide (2:1) has been electrospun and complexed with a GO/SDS solution. The field emission scanning electron microscope (FESEM) showed that the CA membrane was pure white, while the CA/GO/SDS membrane was not as white as CA and its colour became darker as the GO content increased. The process of phosphate removal from the solutions was found to be aided by the hydroxyl groups on the surface of the CA modified with GO/SDS, as shown by infrared spectroscopy. An optimization condition for the adsorption process was studied by varying pH, immersion time, and the mass of the membrane. The experimental results from phosphate adsorption showed that CA/GO/SDS had an excellent pH adaptability, with an optimum pH of 7, and maximum removal (>87.0%) was observed with a membrane mass of 0.05 g at an initial concentration of 25 mg L−1. A kinetic study revealed that 180 min of contact time could adsorb about 87.2% of phosphate onto the CA/GO/SDS membrane. A typical pseudo-second-order kinetic model successfully portrayed the kinetic sorption of phosphate, and the adsorption equilibrium data were well-correlated with the Langmuir adsorption model, suggesting the monolayer coverage of adsorbed molecules.

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Influence of Valsartan on the thermodynamics of micellization of anionic surfactant Sodium Dodecyl Sulphate

European Pharmaceutical Journal ◽

10.1515/afpuc-2016-0019 ◽

2016 ◽

Vol 63 (2) ◽

pp. 30-36

Author(s):

L. Stopková ◽

A. Hriňaková ◽

Ž. Bezáková ◽

F. Andriamanty ◽

V. Žufková

Keyword(s):

Free Energy ◽

Gibbs Free Energy ◽

Anionic Surfactant ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Uv Spectrophotometry ◽

Micellar Media ◽

Different Temperatures ◽

Enthalpy And Entropy

AbstractIn this manuscript was investigated behaviour of drug valsartan by micellar media of anionic surfactant sodium dodecyl sulphate. As the method was used electrical conductivity for the determination of critical micelle concentration at different temperatures (T = 293.15 - 313.15 K), as well as calculated thermodynamic parameters like standard Gibbs free energy, enthalpy and entropy of micellization. According to contribution of Gibbs free energy is the process of micellization primarily controlled by entropy. Solubilization of valsartan was studied in surfactant system at 298.15 K and physiological conditions pH 7.4 using UV-spectrophotometry at different concentration range (0.001 - 0.07 mol/l) of sodium dodecyl sulphate. The solubilization of drug was observed with increasing concentration of surfactant in aqueous solution.

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The adsorption of sodium dodecyl sulphate on fluorite and its surface free energy

Applied Surface Science ◽

10.1016/0169-4332(94)90089-2 ◽

1994 ◽

Vol 81 (1) ◽

pp. 95-102 ◽

Cited By ~ 4

Author(s):

B. Jańczuk ◽

M.L. González-Martín ◽

J.M. Bruque

Keyword(s):

Free Energy ◽

Surface Free Energy ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl

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Identifikasi Daging Tikus Pada Produk Baso Dengan Metode Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (SDS-PAGE)

YARSI Medical Journal ◽

10.33476/jky.v26i2.394 ◽

2018 ◽

Vol 26 (2) ◽

pp. 058

Author(s):

Anna P. Roswiem ◽

Triayu Septiani

Keyword(s):

Sodium Dodecyl Sulphate ◽

Gel Electrophoresis ◽

Polyacrylamide Gel Electrophoresis ◽

Sodium Dodecyl ◽

Polyacrylamide Gel ◽

Sds Page

Bahan baku untuk membuat baso adalah daging hewan, pada umumnya dari daging sapi, ayam, ikan dan babi. Di beberapa daerah di Indonesia terjadi kasus baso tikus. Tujuan penelitian ini adalah menguji ada tidaknya kandungan daging tikus pada produk baso yang dijual di pasar Cempaka Putih-Kecamatan Kramat Jakarta Pusat dan di pedagang baso atau mie baso di sekitar kampus Universitas YARSI Jakarta. Daging adalah protein salah satu metode untuk mengidentifikasi protein adalah metode Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (SDS-PAGE). Hasil penelitian menunjukkan bahwa dari 6 sampel baso terindikasi ada 2 sampel baso dengan nomor 1 dan 5 yang dibuat dari campuran daging sapi dan tikus; ada 1 sampel baso dengan nomor 6 yang terbuat dari daging tikus; dan 2 sampel baso dengan nomor 2 dan 3 yang terbuat dari campuran sapi dan babi, dan hanya 1 sampel baso dengan nomor sampel 4 yang benar-benar terbuat dari daging sapi.

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Ultrasound Effect on Molecules of Sodium Dodecyl Sulphate as Systems of Nanoparticles

Journal of Nano- and Electronic Physics ◽

10.21272/jnep.10(6).06013 ◽

2018 ◽

Vol 10 (6) ◽

pp. 06013-1-06013-5 ◽

Cited By ~ 1

Author(s):

I. G. Vorobiova ◽

◽

Yu. A. Mirgorod ◽

A. S. Chekadanov ◽

◽

...

Keyword(s):

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Ultrasound Effect

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Evaluation of the toxicity of sodium dodecyl sulphate (SDS) in the MucilAir™ human airway model in vitro

Regulatory Toxicology and Pharmacology ◽

10.1016/j.yrtph.2021.105022 ◽

2021 ◽

pp. 105022

Author(s):

Jonathan Welch ◽

Joanne Wallace ◽

Alison B. Lansley ◽

Clive Roper

Keyword(s):

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Human Airway ◽

Airway Model

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Analytical Continuation within the Freundlich Adsorption Model. Comment on Edet, U.A.; Ifelebuegu, A.O. Kinetics, Isotherms, and Thermodynamic Modeling of the Adsorption of Phosphates from Model Wastewater Using Recycled Brick Waste. Processes 2020, 8, 665

Processes ◽

10.3390/pr9071251 ◽

2021 ◽

Vol 9 (7) ◽

pp. 1251

Author(s):

Michael Vigdorowitsch ◽

Alexander N. Pchelintsev ◽

Liudmila E. Tsygankova

Keyword(s):

Experimental Data ◽

Power Function ◽

Thermodynamic Modeling ◽

Mathematical Theory ◽

Surface Adsorption ◽

Analytical Continuation ◽

Adsorption Model ◽

Saturation Regime

Using experimental data for the adsorption of phosphates out of wastewater on waste recycled bricks, published independently in MDPI Processes before (2020), this message re-visits the mathematical theory of the Freundlich adsorption model. It demonstrates how experimental data are to be deeper treated to model the saturation regime and to bridge a chasm between those areas where the data fit the Freundlich power function and where a saturation of surface adsorption centers occurs.

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