Adsorption of methylene blue from aqueous media using graphene oxide Synthesised from bio-soot wastes

ABSTRACT

In the present work, we have successfully synthesised graphene oxide (GO) from the Bio-soot wastes where Bio-soot was used as a graphite source. The prepared GO has been characterised by using XRD, FTIR, Raman, BET, FE-SEM analytical techniques and has been used as an adsorbent for decontamination of highly noxious Methylene blue (MB) dye from aqueous media. The adsorption studies have been investigated by changing the different parameters like adsorbent dosages, pH of the solution, contact time and initial concentration. The obtained adsorption data have been fitted into various kinetic and isotherm models and concluded that adsorption of MB follows second order kinetics and Langmuir models with maximum adsorption capacities 90.20 mg/g which is double as compared to Bio-soot that was 41.42 mg/g. This is due to the increase in adsorption active sites by introducing oxygen-containing groups on Bio-soot surface.

KEYWORDS:

• Bio-Soot
• graphene oxide
• adsorption
• methylene blue
• dye
• adsorbent

Acknowledgements

The authors would like to thank the authorities of Centurion University of Technology and Management, Odisha, India for providing the research facilities and financial assistance to carry out this work.

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary material

Supplemental data for this article can be accessed here.