Research on Adsorption Kinetics Models’ Fitting Values of H₂O₂ Oxidated Loofah Sponge on Methylene Blue

Abstract:

Oxidized alkaline loofah sponge (OAL) was given by treating alkaline loofah sponge (AL) with H₂O₂, four classic adsorption kinetics models which were Lagergren’s pseudo-first-order, Pseudo-second-order equation, the Elovich equation and Intraparticle diffusion were applied to study how the different oxidation degrees of loofah sponge impacted on the values of fitting goodness of the above models and to determine which kind of model was the best fit of the adsorption process and adsorption mechanism. The results showed that Pseudo-second-order equation’s fitting degree was proposed to be best and adsorption mechanism was chemical adsorption by ionic bonding, at the same time, as hydrogen bonds increased, water molecules formed a barrier to impede MB diffusing into the micro-structure.

• Periodical: Applied Mechanics and Materials (Volume 597)
• Pages: 72-77
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.597.72
• Online since: July 2014
• Authors: Yan Han Dou, Yan Wei Wang, Xi Hui Zhao, Yue Wang, Xiao Wen Li, Min Wang, Qiong Li, Qun Li*
• Keywords: Adsorption Mechanism, H₂O₂ Oxidized Loofah Sponge, MB Adsorption Kinetics, Model Fit

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