Open Access

ARTICLE

Development of Magnetite/Graphene Oxide Hydrogels from Agricultural Wastes for Water Treatment

by Hebat-Allah S. Tohamy, Mohamed El-Sakhawy, Samir Kamel^*

Cellulose and Paper Department, National Research Centre, Cairo, 12622, Egypt

* Corresponding Author: Samir Kamel. Email:

Journal of Renewable Materials 2022, 10(7), 1889-1909. https://doi.org/10.32604/jrm.2022.019211

Received 09 September 2021; Accepted 07 December 2021; Issue published 08 March 2022

Abstract

A novel magnetic hydrogel loaded with graphene oxide (GO) was developed in this study. Firstly, GO was prepared from bagasse through a single step via oxidation in the presence of ferrocene under muffled atmospheric conditions, followed by the loading of different amounts of magnetite onto GO via co-precipitation reaction of iron onto GO sheets. Finally, the 2-acrylamido-2-methyl-1-propane sulfonic acid was grafted onto carboxymethyl cellulose in the presence of magnetite GO and N, N′-methylenebisacrylamide as crosslinker yielded hydrogel. The structure, morphological, and thermal behavior of the prepared hydrogels were investigated. In addition, the adsorption performance of Ni(II) ions from aqueous media by the prepared hydrogels was investigated as a function of temperature, time, and concentration of adsorbate in a batch system. The results demonstrated a remarkable enhancement in the adsorption process of Ni(II) (Removal efficiency = 98.82%). All isotherms were found to fit the Langmuir model best. The adsorption properties of both magnetic GO and magnetic hydrogel showed promising properties as green and cheap adsorbents.

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