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Surface-modified graphene oxide-based composites for advanced sequestration of basic blue 41 from aqueous solution.

Md Shahinoor Islam1, Hridoy Roy1, Tasnim Ahmed1

  • 1Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh.

Chemosphere
|August 16, 2023
PubMed
Summary

A novel graphene oxide (GO)-based ternary composite effectively removes Basic Blue 41 (BB41) dye from wastewater. This advanced material shows high adsorption capacity and stability, offering a sustainable solution for textile effluent treatment.

Keywords:
Adsorption mechanismFunctional groupsModified graphene oxidePorous structureRecyclability

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Nanotechnology

Background:

  • Sustainable textile industry growth necessitates advanced materials for efficient wastewater treatment.
  • Graphene oxide (GO) shows promise but requires modification for enhanced performance.

Purpose of the Study:

  • To develop and characterize novel GO-based binary and ternary composites for textile wastewater treatment.
  • To evaluate the adsorption efficiency of these composites for Basic Blue 41 (BB41) dye.

Main Methods:

  • Synthesis of GO/bentonite, GO/Cu-Co oxide, and GO/bentonite/Cu-Co oxide composites.
  • Characterization using FTIR, SEM, EDS, and BET analysis.
  • Adsorption studies using BB41 dye, kinetic and isotherm modeling.

Main Results:

  • The ternary composite exhibited a 50% higher BET surface area than GO.
  • BB41 removal efficiencies were 92% for the ternary composite, 89% for GO/bentonite, 80% for GO, and 69% for GO/Cu-Co oxide.
  • The maximum adsorption capacity for the ternary composite was 351.1 mg/g, with 90% efficiency retained after five cycles.

Conclusions:

  • The GO-based ternary composite demonstrates excellent feasibility and scalability as an adsorbent for BB41 in wastewater.
  • Chemisorption and pore diffusion are key mechanisms in BB41 adsorption.
  • The developed material offers a sustainable solution for textile wastewater treatment.