Title: Removal of methylene blue using naturadsorbents

Authors: Lincy Arulraj; Jegathambal Palanichamy; E.J. James

Addresses: Water Institute, Karunya Institute of Technology and Sciences, Coimbatore-641114, India ' Water Institute, Karunya Institute of Technology and Sciences, Coimbatore-641114, India ' Water Institute, Karunya Institute of Technology and Sciences, Coimbatore-641114, India

Abstract: The main aim of this study is to present a novel green and cost-effective method to synthesise magnetite nanoparticles (Fe₃O₃) using biological method. Magnetite nanoparticles play a significant role in remediation of toxic metal ions. Fe₃O₄ was successfully synthesised using four different natural wastes such as mosambi peel, pomegranate peel, moringa leaf powder and tea waste. These plant materials and tea waste have high polyphenol content and they form complex with metal ions and will increase the adsorption rate. The prepared materials were characterised by UV-visible spectroscopy (UV-Vis spectroscopy) and Fourier transform infra-red spectroscopy (FTIR). The synthesised nanoparticles where then incorporated into beads. The maximum removal of blue dye was 93.72% for pomegranate peel, 81.34% for mosambi peel, 73.25% for moringa leaf powder, 24.54% for tea waste at the initial 100 ppm. Pomegranate beads were more effective than other adsorbents in the removal of blue dye.

Keywords: magnetite; biological method; beads.

DOI: 10.1504/WRSTSD.2023.131926

World Review of Science, Technology and Sustainable Development, 2023 Vol.19 No.3, pp.225 - 240

Accepted: 30 Jun 2021
Published online: 05 Jul 2023 *

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