Kinetics of Salicylic Acid Adsorption on Activated Carbon
type: Dataset
description: The adsorption and desorption of salicylic acid from water solutions was investigated in HPLC microcolumns packed with activated carbon. The adsorption isotherm was obtained by the step-up frontal analysis method in a concentration range of 0-400 mg/L and was well fitted with the Langmuir equation. The investigation of rate aspects of salicylic acid adsorption was based on adsorption/desorption column experiments where different inlet concentrations of salicylic acid were applied in the adsorption phase and desorption was conducted with pure water. The concentration profiles of individual adsorption/desorption cycles data were fitted using several single-parameter models of the fixed-bed adsorption to assess the influence of different phenomena on the column behavior. It was found that the effects of axial dispersion and extraparticle mass transfer were negligible. A rate-determining factor of fixed-bed column dynamics was the kinetics of pore surface adsorption.Abimodal kinetic model reflecting the heterogeneous character of adsorbent pores was verified by a simultaneous fit of the column outlet concentration in four adsorption/ desorption cycles. The fitted parameters were the fraction of mesopores and the adsorption rate constants in micropores and mesopores, respectively. It was shown that the former rate constant was an intrinsic one whereas the latter one was an apparent value due to the effects of pore blocking and diffusional hindrances in the micropores.
issued: 2026-05-05T20:45:48.678738
language: en
modified: 2026-05-05T20:45:48.678742
contact point: Organization
  fn: CCSD
keyword: activated-carbons
keyword: adsorption
keyword: hplc
keyword: infoeu-reposemanticsarticle
keyword: journal-articles
keyword: salicylic-acid
keyword: sduenvisciences-of-the-universe-physicscontinental-interfaces-environment
landing page: 0743-7463

Kinetics of Salicylic Acid Adsorption on Activated Carbon
type: Distribution
format: HTML
issued: 2026-05-05T20:45:48.699737
modified: 2026-05-05T20:45:48.667734
access URL: https://hal.science/hal-00096586

test_moissonnage_selune
type: Agent