Literature DB >> 18359205

Adsorption of humic acid from aqueous solutions on crosslinked chitosan-epichlorohydrin beads: kinetics and isotherm studies.

W S Wan Ngah1, M A K M Hanafiah, S S Yong.   

Abstract

The adsorption of humic acid on crosslinked chitosan-epichlorohydrin (chitosan-ECH) beads was investigated. Chitosan-ECH beads were characterized by Fourier transform infrared spectroscopy (FTIR), surface area and pore size analyses, and scanning electron microscopy (SEM). Batch adsorption experiments were carried out and optimum humic acid adsorption on chitosan-ECH beads occurred at pH 6.0, agitation rate of 300 rpm and contact time of 50 min. Adsorption equilibrium isotherms were analyzed by Langmuir and Freundlich models. Freundlich model was found to show the best fit for experimental data while the maximum adsorption capacity determined from Langmuir model was 44.84 mg g(-1). The adsorption of humic acid on chitosan-ECH beads was best described with pseudo-first-order kinetic model. For desorption study, more than 60% of humic acid could be desorbed from the adsorbent using 1.0M HCl for 180 min.

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Year:  2008        PMID： 18359205     DOI： 10.1016/j.colsurfb.2008.02.007

Source DB:  PubMed          Journal:  Colloids Surf B Biointerfaces        ISSN： 0927-7765            Impact factor:   5.268


  7 in total

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Authors:  Shaogang Liu; Wenzhen Zhang; Xuecai Tan; Fang Zhao; Wanting Huang; Hanchun Du; Bernard A Goodman; Fuhou Lei; Kaisheng Diao
Journal:  RSC Adv       Date:  2018-02-28       Impact factor: 4.036

3.  Electrochemical treatment of humic acid using particle electrodes ensembled by ordered mesoporous carbon.

Authors:  Xue Li; Wenwen Zhang; Di Xie; Xiaoyu Wang; Wenjian Ye; Wenyan Liang
Journal:  Environ Sci Pollut Res Int       Date:  2018-05-10       Impact factor: 4.223

4.  Silica-coated magnetite nanoparticles core-shell spheres (Fe3O4@SiO2) for natural organic matter removal.

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5.  Electrospun Cellulose-Acetate/Chitosan Fibers for Humic-Acid Removal: Improved Efficiency and Robustness with a Core-Sheath Design.

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Journal:  Nanomaterials (Basel)       Date:  2022-04-09       Impact factor: 5.076

6.  Silane Coupling Agent Modifies the Mechanical Properties of a Chitosan Microfiber.

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Journal:  Molecules       Date:  2020-11-13       Impact factor: 4.411

7.  Imaging-Guided Delivery of a Hydrophilic Drug to Eukaryotic Cells Based on Its Hydrophobic Ion Pairing with Poly(hexamethylene guanidine) in a Maleated Chitosan Carrier.

Authors:  Sofia A Zakharenkova; Marina I Lebedeva; Alexandra N Lebedeva; Irina A Doroshenko; Ksenya Yu Vlasova; Anastasiya A Bartoshevich; Vladimir M Senyavin; Sergey S Abramchuk; George G Krivtsov; Alexander A Ezhov; Tatyana A Podrugina; Natalia L Klyachko; Mikhail K Beklemishev
Journal:  Molecules       Date:  2021-12-07       Impact factor: 4.411
  7 in total

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