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Adsorption studies of graphene oxide for lead removal from synthetic wastewater

Nik Abdul Ghani, Nik Rashida and Jami, Mohammed Saedi and Ku Abdullah, Ku Mariam Zainab (2019) Adsorption studies of graphene oxide for lead removal from synthetic wastewater. Biological and Natural Resources Engineering Journal, 2 (2). pp. 21-36. E-ISSN 2637-0719

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Abstract

Lead contamination present in wastewater is one of the major problems due to its toxicity and persistence. This issue increased dramatically and led to the environmental and health concerns worldwide. Therefore, this study aims to remove lead from synthetic wastewater effluent by adsorption process. In this study, nanomaterial called graphene oxide (GO) is used as an adsorbent due to its mechanical strength and high surface area. The parameters were optimized using Fractional factorial design under response surface method. GO demonstrates high adsorption capacity, qmax = 500 mg/g at 100 mg/L of initial lead concentration and at optimum pH 9. Adsorption isotherm of lead was also investigated to evaluate the adsorption capacity. The equilibrium data of graphene oxide adsorption was better represented by the Langmuir isotherm and was achieved within 60 minutes. The results showed that GO has potential to be an important adsorbent for lead removal. In the future, GO might be imbedded as adsorbent in the membrane fabrication for wastewater treatment.

Item Type: Article (Journal)
Additional Information: 5545/79015
Uncontrolled Keywords: Lead; Graphene Oxide; Adsorption; Wastewater
Subjects: T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Biotechnology Engineering
Kulliyyah of Engineering
Depositing User: Professor Dr. Mohammed Saedi Jami, PhD CEng MIChemE
Date Deposited: 24 Feb 2020 12:14
Last Modified: 24 Feb 2020 12:14
URI: http://irep.iium.edu.my/id/eprint/79015

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