Mechanical Engineering Faculty Publications and Presentations
Document Type
Article
Publication Date
6-2021
Abstract
Manganese oxide coated zeolite (MOCZ) has been demonstrated in the present issue as a potential adsorbent for the removal of manganese (Mn2+) from Mn2+ containing aqueous solution by batch adsorption process. The adsorption capacity of the as-prepared MOCZ was determined over the parameters of contact time, adsorbent dosage, pH and Mn2+ concentration. Surface properties of the MOCZ were analyzed by Brunauer–Emmett–Teller, X-ray diffraction and field emission scanning electron microscopy. Results showed that MOCZ has a high degree of crystallinity and the surface of MOCZ is mainly vernadite (γMnO2) with a specific surface area and average pore diameter of 39.9 m2 g–1 and 1.17 nm, respectively. Besides, the adsorption process was found to be strongly pH-dependent and Mn2+ adsorption increased with pH and adsorbent dosage. Adsorption kinetics of Mn2+/MOCZ system followed pseudo-second-order model successfully and equilibrium data were fitted with isotherm models of Langmuir and modified Langmuir. As-proposed two sites one molecule adsorption mechanism fitted well with the equilibrium data and maximum adsorption capacity of Mn2+ was found to be 0.93 meq Mn2+ g–1. Therefore, MOCZ can be employed as an effective and alternative to commercial adsorbents for the removal of manganese from an aqueous solution.
Recommended Citation
Rahman, Md Wasikur, Huei Ruey Ong, Wendy Yin Jou Kong, Hamidah Abdullah, and Md Maksudur Rahman Khan. "Adsorption of manganese ions from aqueous solution by using manganese oxide coated zeolite." Desalination and Water Treatment 224 (2021): 273-281. https://doi.org/10.5004/dwt.2021.27174
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Desalination and Water Treatment
DOI
10.5004/dwt.2021.27174
Comments
http://creativecommons.org/licenses/by-nc-nd/4.0/