Next Article in Journal
Transboundary Aquifers between Baja California, Sonora and Chihuahua, Mexico, and California, Arizona and New Mexico, United States: Identification and Categorization
Previous Article in Journal
Evaluation of the RF-Based Downscaled SMAP and SMOS Products Using Multi-Source Data over an Alpine Mountains Basin, Northwest China
Article

Hybrid Beads of Zero Valent Iron Oxide Nanoparticles and Chitosan for Removal of Arsenic in Contaminated Water

1
Polymer Research Lab, School of Chemical and Material Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
2
School of Natural Sciences, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
3
National Water Quality Laboratory, Pakistan Council of Research in Water Resources, Islamabad 44000, Pakistan
4
The Institute of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore 54770, Pakistan
5
Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
6
Department of Chemical Engineering, College of Engineering, Qatar University, Doha P.O. Box 2713, Qatar
7
State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
8
Faculty of Applied Sciences, School of Engineering, University of British Colombia, Okanagan Campus, Kelowna, BC V1V 1V7, Canada
9
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
10
Nova Materials Technologies, Lahore 54900, Pakistan
*
Authors to whom correspondence should be addressed.
Academic Editor: Antonio Panico
Water 2021, 13(20), 2876; https://doi.org/10.3390/w13202876
Received: 28 July 2021 / Revised: 15 September 2021 / Accepted: 15 September 2021 / Published: 14 October 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
Water contaminated with highly hazardous metals including arsenic (As) is one of the major challenges faced by mankind in the present day. To address this pressing issue, hybrid beads were synthesized with various concentrations of zero valent iron oxide nanoparticles, i.e., 20% (FeCh-20), 40% (FeCh-40) and 60% (FeCh-60) impregnated into a polymer of chitosan. These hybrid beads were employed as an adsorbent under the optimized conditions of pH and time to facilitate the efficient removal of hazardous arsenic by adsorption cum reduction processes. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer- Emmett-Teller BET, a porosity test and wettability analysis were performed to characterize these hybrid beads. The porosity and contact angle of the prepared hybrid beads decreased with an increase in nanoparticle concentration. The effects of various adsorption factors such as adsorbent composition, contact period, pH value and the initial adsorbate concentration were also evaluated to study the performance of these beads for arsenic treatment in contaminated water. FeCh-20, FeCh-40 and FeCh-60 have demonstrated 63%, 81% and 70% removal of arsenic at optimized conditions of pH 7.4 in 10 h, respectively. Higher adsorption of arsenic by FeCh-40 is attributed to its optimal porosity, hydrophilicity and the presence of appropriate nanoparticle contents. The Langmuir adsorption kinetics described the pseudo second order. Thus, the novel beads of FeCh-40 developed in this work are a potent candidate for the treatment of polluted water contaminated with highly toxic arsenic metals. View Full-Text
Keywords: zero valent iron oxide; chitosan; nanoparticles; arsenic; adsorption; isotherm model; kinetics zero valent iron oxide; chitosan; nanoparticles; arsenic; adsorption; isotherm model; kinetics
Show Figures

Graphical abstract

MDPI and ACS Style

Ahmed, M.F.; Abbas, M.A.; Mahmood, A.; Ahmad, N.M.; Rasheed, H.; Qadir, M.A.; Khan, A.U.; Qiblawey, H.; Zhu, S.; Sadiq, R.; Khan, N.A. Hybrid Beads of Zero Valent Iron Oxide Nanoparticles and Chitosan for Removal of Arsenic in Contaminated Water. Water 2021, 13, 2876. https://doi.org/10.3390/w13202876

AMA Style

Ahmed MF, Abbas MA, Mahmood A, Ahmad NM, Rasheed H, Qadir MA, Khan AU, Qiblawey H, Zhu S, Sadiq R, Khan NA. Hybrid Beads of Zero Valent Iron Oxide Nanoparticles and Chitosan for Removal of Arsenic in Contaminated Water. Water. 2021; 13(20):2876. https://doi.org/10.3390/w13202876

Chicago/Turabian Style

Ahmed, Mian F., Muhammad A. Abbas, Azhar Mahmood, Nasir M. Ahmad, Hifza Rasheed, Muhammad A. Qadir, Asad U. Khan, Hazim Qiblawey, Shenmin Zhu, Rehan Sadiq, and Niaz A. Khan 2021. "Hybrid Beads of Zero Valent Iron Oxide Nanoparticles and Chitosan for Removal of Arsenic in Contaminated Water" Water 13, no. 20: 2876. https://doi.org/10.3390/w13202876

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop