Study On Adsorption Properties And Mechanisms Of Reactive Dyestuffs Onto Organic Modified Palygorskite

Based on separation and purification of palygorskite, this article compares and studies Absorption properties and mechanisms of palygorskite on two reactive of Reactive Brilliant Red X-3B Reactive Brilliant Blue KN-R, from sides of the thermodynamic absorption and adsorption dynamics before and after the Organic Modification of palygorskite.Before Organic modification, palygorskite adsorption reactive data balance the Langmuir adsorption isotherm equation better. Activity on the red X-3B and activity brilliant blue KN-R adsorption enthalpy were 0.97 and 0.33 kJ / mol, which is a heat process.Organic modified palygorskite the absorption of the two reactive data can be better balanced with Freundlich adsorption isotherm equation. Activity on the red X-3B and activity brilliant blue KN-R adsorption enthalpy were 0.03 and 0.90 kJ / mol, which is a heat process.Organic palygorskite modified before and after absorption of the two reactive free energy are negative, which is a spontaneous process at normal temperature and pressure as well as both physical and chemical absorption process. Palygorskite modified after two reactive absorption is the process by entropy.Organic palygorskite modified before and after the activity red X-3B and the brilliant blue of the adsorption KN-R meet the two quasi-dynamic equation better; modified before the apparent activation energy absorption, respectively 24.39 and 16.30 kJ / mol, Modified after the apparent activation energy absorption were 2.46 and 39.19 kJ / mol, which shows that this absorption is not a single chemical absorption rate for the control steps, but also a proliferation of film for the rate to control steps, by the film And the proliferation of chemical adsorption jointly controlled process...