Mixed Solutions of Anionic and Zwitterionic Surfactant (Betaine): Surface-Tension Isotherms, Adsorption, and Relaxation Kinetics

Mixed solutions of anionic and zwitterionic surfactant (Betaine): surface-tension isotherms, adsorption, and relaxation kinetics.

Here, we present experimental surface-tension isotherms of mixed solutions of two surfactants, sodium dodecyl sulfate (SDS) and cocoamidopropyl betaine (Betaine), measured by means of the Wilhelmy plate method. The kinetics of surface-tension relaxation exhibits two characteristic time scales, which have been distinguished to determine correctly the equilibrium surface tension. The transition f...

Prediction of Surface Tension in Single and Mixed Electrolyte Solutions

Study of kinetics, isotherms and thermodynamics of lead adsorption from aqueous solutions using Lignocellulose Nano-fibers (LCNFs)

The surface adsorption of heavy metals in effluents with nanoparticles is today asuitable method for effluents treatment. In the present study, lignocellulose nano-fibers(LCNFs) were used as natural adsorbent for lead adsorption. The aim was to evaluate leadadsorption using adsorption isotherms, kinetics and thermodynamics. Fourier TransformInfrared Sp...

Hydrothermal Synthesis of Cobalt ‎Disulfide Nanostructures and Adsorption ‎Kinetics, Isotherms, and Thermodynamics ‎of Tetracycline‎

   Surfaces of synthesis cobalt disulfide has high electron density that could interact with polycyclic aromatic compounds by π-π stacking. Cobalt disulfide was synthesized with the hydrothermal method and characterized by field emission scanning electron microscopy, X-ray diffraction and energy-dispersive X-ray. Using tetracycline as a model analyte, the batch adsorption experiments were c...

Wormlike micelles of a C22-tailed zwitterionic betaine surfactant: from viscoelastic solutions to elastic gels.

The 22-carbon-tailed zwitterionic surfactant erucyl dimethyl amidopropyl betaine (EDAB) forms highly viscoelastic fluids in water at low concentrations and without the need for salt or other additives. Here, semidilute aqueous solutions of EDAB are studied by using a combination of rheological techniques, small-angle neutron scattering (SANS) and cryo-transmission electron microscopy (cryo-TEM)...