Fibers and Polymers

, Volume 20, Issue 8, pp 1666–1672 | Cite as

Methylene Blue Removal by Graphene Oxide/Alginate Gel Beads

  • Xianjun LiuEmail author
  • Baochen Cui
  • Shuzhi Liu
  • Qing Ma


Methylene blue (MB) adsorption capacity in water matrices depends highly on the properties of each component of the adsorption systems. The most important one of these is the physicochemical properties of the adsorbent. A composite gel bead was prepared from graphene oxide (GO) and sodium alginate (SA) through a combination of freeze-drying and cross-linking with calcium chloride. Fundamental adsorption behavior of the gel beads for removal of MB from aqueous solutions has been investigated. The pH had mild influence on the adsorption, while adsorption increased as the adsorbent dosage, initial concentration, and contact time increased. The kinetic adsorption fitted the pseudo second-order and intraparticle diffusion models. The isotherm data followed the Langmuir and Freundlich models. The maximum adsorption capacity from the Langmuir isotherm equation reached 357.14 mg/g. The results of the thermodynamic investigations indicated that the adsorption reactions were spontaneous (ΔG<0, −13.79 kJ/mol), exothermic (ΔH<0, −46.7 kJ/mol). In addition, the adsorption capacity of the regenerated gel beads has little loss until four cycles.


Graphene oxide Alginate Gel Methylene blue Adsorption 


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This work was supported by the National Natural Science Foundation of China (Grant No. 21473028), the Natural Science Foundation of Heilongjiang Province, China (Grant No. B2015011).


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Copyright information

© The Korean Fiber Society 2019

Authors and Affiliations

  • Xianjun Liu
    • 1
    • 2
    Email author
  • Baochen Cui
    • 1
  • Shuzhi Liu
    • 1
  • Qing Ma
    • 2
  1. 1.College of Chemistry and Chemical EngineeringNortheast Petroleum UniversityDaqingP. R. China
  2. 2.Qitaihe Baotailong Coal & Coal Chemicals Public Co., Ltd.QitaiheP. R. China

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