Journal
BIORESOURCE TECHNOLOGY
Volume 142, Issue -, Pages 611-619Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.05.081
Keywords
Pb2+; Fe3O4@SA-Zr; Adsorption; Heavy metal; Wastewater treatment
Funding
- National Major Science and Technology Program for Water Pollution Control and Treatment [2009ZX07212-001-04]
- National Natural Science Foundation for the scientific research ability training of undergraduate students [J1103307]
Ask authors/readers for more resources
Novel magnetic sodium alginate gel beads (Fe3O4@SA-Zr) were successfully prepared by using zirconium(IV) as crosslinking ions, and used as adsorbent for removal of Pb2+ ions from aqueous solutions in batch and fixed-bed column systems. Fe3O4@SA-Zr was characterized by SEM, FT-IR, XRD and VSM. Fe3O4@SA-Zr had the macroporous structure, exhibited greater stability and possessed a sensitive magnetic response. More importantly, Fe3O4@SA-Zr exhibited high adsorption capacity, fast kinetics and high selectivity towards Pb2+ ions. Experimental data was well described by Langmuir isotherm with a maximum adsorption capacity of 333.33 mg/g. FTIR and XPS indicated that the carboxyl and hydroxyl groups of SA and hydroxyl groups binding to Fe and Zr species were involved in Pb2+ adsorption. Fixed-bed column packed with Fe3O4@SA-Zr exhibited higher removal efficiency for Pb(2+)ions. Consequently, Fe3O4@SA-Zr with excellent absorbability, stability and reusability could be used as a promising adsorbent for Pb2+ removal in wastewaters. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available