Special Issue
  • Modified Graphene Oxide-Based Adsorbents Toward Hybrid Membranes for Organic Dye Removal Application
  • Thi Sinh Vo*, Khin Moe Lwin*, Sun Choi**, Kyunghoon Kim*†

  • * School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
    ** Centers for Environment, Health, and Welfare Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea;

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, the channels-contained hybrid membranes have been fabricated through the incorporation of glass fibers and GO sheets (GO/glass fibers, GG), or a mixture of chitosan/GO (CS/GO/glass fibers, CGG), as hybrid membranes using in organic dye removal. The material properties are well investigated the terms in the morphological, chemical, crystal, and thermal characterizations for verifying interactions in their formed structure. These hybrid membranes have been fitted well in pseudo-second order and Langmuir models that are associated with chemical adsorption and a monolayer approach, respectively. The highest adsorption ability of methylene blue and methyl orange reached 59.40 mg/g and 229.07 mg/g (GG); and 287.47 mg/g and 252.91 mg/g (CGG), which is more enhanced than that of previous GO-based other adsorbents. Moreover, the dye separation on these membranes could be favorable to superb sealing and trapping dye molecules from water instead of only the dye connection occurring on their surface, regarding the physically sieving effect. The membranes can also be reused within two and three adsorbing-desorbing cycles on the GG and CGG ones, respectively. These membranes can become future adsorbents to be applied for wastewater treatment due to their structural features


Keywords: Graphene oxide, Organic dye, Composite membrane, Recyclability

This Article

Correspondence to

  • Kyunghoon Kim
  • School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea

  • E-mail: kenkim@skku.edu