Related Experiment Video
Updated: Jun 20, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Novel tannin-based adsorbent in removing cationic dye (Methylene Blue) from aqueous solution. Kinetics and
J Sánchez-Martín1, M González-Velasco, J Beltrán-Heredia
1Department of Chemical Engineering and Physical Chemistry, University of Extremadura, Avda de Elvas, s/n, 06071 Badajoz, Spain. jsanmar@unex.es
Abstract:
Natural tannin-based adsorbent has been prepared on the basis of the gelification of Quebracho bark extract. The resulting product, Quebracho Tannin Gel (QTG) was tested as cationic dye adsorbent with Methylene Blue (MB). Kinetics of adsorption process were studied out and a period of 15 days was determined for reaching equilibrium. The influences of pH and temperature were evaluated. As pH or temperature raise q capacity of QTG increases. Theoretical modelization of dye-QTG adsorption was carried out by multiparametric adjustment according to Langmuir's hypothesis. Values of the k(l1), k(l2) and activation energies were calculated.
Related Concept Videos
Adsorption Isotherms II
Ion Exchange
Extraction: Advanced Methods
Analyte Adsorption and Distribution
Masking and Demasking Agents
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...
Adsorption Isotherms I
