Equilibrium and Kinetic Studies on Adsorption of Neutral and Ionic Species of Organic Adsorbates from Aqueous Solutions on Activated Carbon.

ABSTRACT: This work presents comprehensive studies of the adsorption of neutral and ionic forms of organic adsorbates from aqueous solutions on activated carbon. The influence of pH on the equilibrium and kinetics of the adsorption of methylene blue (MB) and organic acids, benzoic (BA), 2-nitrobenzoic (2-NBA), 3-nitrobenzoic (3-NBA), and 4-nitrobenzoic (4-NBA) acid, was investigated. Experimental adsorption isotherms were analyzed using the generalized Langmuir isotherm equation (R² = 0.932-0.995). Adsorption rate data were studied using multiple adsorption kinetics equations, of which the multi-exponential equation gave the best fit quality (R² - 1 = (6.3 × 10^-6)-(2.1 × 10^-3)). The half-time was also used to represent the effect of pH on adsorption kineti

SUBMITTER: Wasilewska M 

PROVIDER: S-EPMC11243464 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature