Industrial wastewater remediation using hematite@chitosan nanocomposite

Bibliographic Information
Authors: Saad A.H.A.; Azzam A.M.; El-Wakeel S.T.; Mostafa B.B.; El-Latif M.B.A.
Journal: Egyptian Journal of Aquatic Biology and Fisheries
Publisher: Egyptian Society for the Development of Fisheries and Human Health
Publication Date: 1 January 2020
Volume / Issue: Volume 24 / Issue 1
Pages: 13–29
ISSN: 11106131
DOI: 10.21608/ejabf.2020.67580
Scopus: View on Scopus
Document Type: Article
Access: All Open Access; Gold Open Access
Authors and Affiliations
Saad A.H.A., Department of Zoology, Faculty of Science, Ain-Shams University, Cairo, Egypt; Azzam A.M., Department of Environmental Researches, Theodor Bilharz Research Institute, Giza, Egypt; El-Wakeel S.T., Department of Water Pollution Research, National Research Center, Egypt; Mostafa B.B., Department of Environmental Researches, Theodor Bilharz Research Institute, Giza, Egypt; El-Latif M.B.A., Department of Environmental Researches, Theodor Bilharz Research Institute, Giza, Egypt
Abstract
Nowadays, the treatment of wastewater from toxic heavy metals is a long standing problem due to the industrial progress in the last years. The purpose of this study was to fabricate a novel hematite@chitosan core/organically shell nanocomposite (HCS) to remove Pb(II), Cu(II) and Cd(II) ions from industrial wastewater. The nanocomposite adsorbent was characterized by FE-SEM, TEM and FTIR resulting in formation of spherical dumb shaped particles with size range 40 to 80 nm. The effect of many operating parameters such as pH, metal ion concentration, adsorbent dosage and contact time on the removal of the toxic metal ions were investigated. The maximum removal efficacy for Pb (II), Cu (II) and Cd (II) was recorded at pH 6, 4 and 6.5, respectively. The equilibrium time was 60, 60 and 30 min, respectively while, the optimum efficiency was 94% 76% and 83% removal efficiencies for Pb (II), Cu (II) and Cd (II), respectively at initial concentration 10 mg/l. The adsorption isotherms were better matched by the Langmuir model and the metal ions adsorption capacity were 129.8, 63.2 and 69.9 mg/g, for Pb (II), Cu (II) and Cd (II), respectively. Successive adsorption-desorption cycles occur by the adsorbent confirmed that HCS NC can be reused after recovery of ions by disodium salt of EDTA solution without significant capacity loss. © 2020, Egyptian Society for the Development of Fisheries and Human Health. All rights reserved.
Keywords
Chitosan; Heavy metals; Hematite; Nanocomposite; Removal efficiency; Wastewater
Citation Information
Scopus Citations: 13
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