Water pollution is one of the biggest problems facing us, so it requires the need to develop a very high-efficiency and inexpensive absorbent material from natural surfaces and compare it with expensive commercial sorbents. Where in this study an absorbent substance was prepared from the natural surfaces of Syzgium Aromaticum Flower Bud (SAFB), Nigella Sativa (NS) Converted to activated carbon to activated carbon Activated (SAFB), and Activated (NS), as these surfaces are characterized by high porosity, cheap price and very high efficiency in removing dye. The composite was illustrated via different analysis apparatus included FTIR, and FE-SEM, The adsorption result were fitted with Freundlich isotherms. The experimental kinetic result at different primary reactive green dye concentrations, were also analyzed through first model, second model and Elovich model. The obtained data appear that the model pseudo-first model fits the adsorption kinetic result through R2 0.96028, R2 0.9486, R2 0.9016 and R2 0.9620 of SAFB and ACTIVE-SAFB and Nigella Sativa (NS) and Activated (NS) in the same order.
Interfacial and thermodynamic properties Γmax, Amin, ᴨcmc , ΔG °ads, ΔG °m, ΔH °m, and ΔS °m of individual sodium octyl sulfosuccinate (AOT) surfactant and their mixture with (DPH) drug at two concentrations (0.001 and 0.0001 M) have been calculated. The calculation was performed using the surface tension at temperature range 293-323 K with the variation of surfactant concentration to determine the cmc of all systems studied. The variation of critical micelle concentration (cmc) with concentration of DPH drug and the temperature was used to calculate the parameters above. The results indicate that the cmc of AOT Decrease when the DPH was added and when the temperature increased at the whole temperature studied. The results obtained for interfacial properties show that Γmax decrease with the addition of DPH. The results of thermodynamic properties indicate that the micellization and adsorption at interface are spontaneous and the ΔG°ads are more negative than ΔG°m at all temperatures which reveal that micelle formation is less spontaneous than adsorption or surface adsorption is more preferable than micellization.
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