Non-functionalized oil palm waste-derived reduced graphene oxide for methylene blue removal: Isotherm, kinetics, thermodynamics, and mass transfer mechanism

Ab Aziz, Nur Azrie Hizad and Md Ali, Umi Fazara and Ahmad, Anis Atikah and Mohamed Dzahir, Mohd Irfan Hatim and Khamidun, Mohd Hairul and Abdullah, Muhammad Faiq (2023) Non-functionalized oil palm waste-derived reduced graphene oxide for methylene blue removal: Isotherm, kinetics, thermodynamics, and mass transfer mechanism. Arabian Journal of Chemistry, 16. pp. 1-11.

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Official URL: https://doi.org/10.1016/j.arabjc.2022.104387

Abstract

The discharge of colored effluents from industries is one of the significant sources of water pollution. Therefore, there is a growing demand for efficient and low-cost treatment methods. An adsorption process with reduced graphene oxide (rGO) synthesized using a novel double carbonization and oxidation method from the natural precursor of oil palm empty fruit bunch (OPEFB) as adsorbent is a promising approach for addressing the problem. In this study, OPEFB biochar was mixed with ferrocene with a ratio of 5:1 (m/m) and oxidized under nitrogen flow at a temperature of 300 �C for 20 min, which resulted in 75.8 wt% of yield. The potential of the synthesized rGO as an effective adsorbent for dye removal from water and wastewater was explored using methylene blue (MB) as a model. Several factors were investigated, including adsorbent dosage, initial concentration, contact time, and pH, to obtain the optimum adsorption condition through batch studies. The physical and chemical characteristics of the rGO in terms of functional groups,

Item Type:	Article
Uncontrolled Keywords:	Reduced graphene oxide; Oil palm waste; Cationic dye; Adsorption; Thermodynamics; Mass transfer mechanism
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Architecture
Depositing User:	Mr. Mohamad Zulkhibri Rahmad
Date Deposited:	20 Jun 2023 03:24
Last Modified:	20 Jun 2023 03:24
URI:	http://eprints.uthm.edu.my/id/eprint/9015

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