Parameters ( m, pH and t) interaction, modelling and optimization for %Doxycycline removal and adsorption capacity was performed using Box Behnken Design. Adsorbent dose ( m), Doxycycline solution pH, adsorption time ( t) and temperature (T) were considered as process parameters, and %Doxycycline removal and adsorption capacity were measured as responses of the adsorption. In this study, Doxycycline adsorption on to MCM-41 (not reported earlier) was studied. Development of antimicrobial resistance has been announced as one of the top ten threats to global health in 2019. its inappropriate disposal can affect human health and aquatic fauna. Surfactants are found to enhance the diffusion significantly depending on hydrophobic/hydrophilic group lengths and the structure of the surfactant molecule.Antibiotics are bio-accumulating and persistent.
Aggregation properties of sodium dodecyl sulfate (SDS) in the presence of butylated hydroxyanisole (synthetic antioxidant), at a range of temperatures (25, 30 and 35 ☌) have been measured by the conductometric study in aqueous-ethanolic composite solution.
The experimental data of aqueous-ethanolic solutions as a function of SDS concentration ranging from 1 to 14 mM dm −3 show the presence of inflexion points indicating micellization and interaction mechanisms. Effect of temperature was also observed in increasing the CMC (Critical Micelle Concentration) in the narrow composition.
3.1.1 Equilibrium and LTE (Local Thermodynamic Equilibrium) 113. From the CMC values as a function of temperature, various thermodynamic parameters have been evaluated viz: (a) the standard enthalpy change ( Δ H m °), (b) standard entropy change ( Δ S m °), and (c) standard Gibbs energy change ( Δ G m °). 3.1.3 Differential Thermodynamic Relations 116. The results showed that the presence of alcohol, as well as the composition of water + ethanol may have effect on thermodynamic parameters. The variation in these parameters with the concentration of surfactant or with the change in temperature suggests the manifestation of hydrophobic interactions in the studied system.
0 kommentar(er)
