Original scientific paper
https://doi.org/10.15255/KUI.2020.084
Recycling of Waste Expanded Polystyrene as an Effective Adsorbent of Naphthalene from Aqueous Solution
Oluwayemisi Christiana Taiwo
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Tinuade Jolaade Afolabi
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Funmilayo Nihinlola Osuolale
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Ayobami Olu Ajani
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Olufunmilayo Abiola Aworanti
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Olabanji Raphael Ogunleye
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Abass Olanrewaju Alade
orcid.org/0000-0003-4837-3685
; Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Abstract
Batch adsorption process factors [contact time (20–150 min), adsorbent dosage (0.5–1.5 g), adsorbate concentration (5–30 mg l–1), and agitation rate (100–250 rpm)] were optimised based on D-optimal Design under the Response Surface Methodology (RSM) of the Design-Expert Software (7.6.8) for the removal of naphthalene from aqueous solution using adsorbent developed from Acetylated Waste Expanded Polystyrene (AWEPs). The maximum adsorption capacity (5.6608 mg g–1) achieved was well fitted to Dubinin-Radushkevich Isotherm (R2 = 0.9949). The SSE (< 0.05) and ARE (< 4.0 %) indicated pseudo-second-order as the most suitable model. This research has demonstrated the effectiveness of the WEPs for the removal of naphthalene from the aqueous solution.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Keywords
adsorption; D-optimal; naphthalene; waste expanded polystyrene
Hrčak ID:
261418
URI
Publication date:
23.8.2021.
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