Journal
CHEMICAL ENGINEERING JOURNAL
Volume 337, Issue -, Pages 595-608Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.12.142
Keywords
Battery effluent; Wastewater; Magnetic property; Recovery; Polysaccharides
Categories
Funding
- CAPES agency
Ask authors/readers for more resources
Chitosan/alginate (CHT/ALG) and magnetic CHT/ALG/Fe3O4@SiO2 composites were successfully prepared and used as adsorbent materials to remove Pb(II) from aqueous systems. New hydrogel beads were yielded through an unpublished methodology, examining the ionic strength of the chitosan (CHT) solutions. Polyvalent cations and toxic cross-linking agents such as glutaraldehyde and epichlorohydrin, frequently used to prepare CHT/ALG-based materials were not used in this study. The samples were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, thermal analysis (TAG/DSC), and zeta potential measurements. The addition of Fe3O4@SiO2 (8 +/- 3 nm) significantly modified the surface morphology of the composites. The CHT/ALG/Fe3O4@SiO2(8) hydrogel comprising the highest Fe3O4@SiO2 content (8.0 wt%), displayed magnetic feature and zeta potential of -76.8 mV at pH 6.0. Kinetic and equilibrium adsorption studies reveal that Elovich and Redlich-Peterson mathematical models provide the best fits for the experimental data, respectively. The magnetic composite CHT/ALG/Fe3O4@SiO2(8) had maximum adsorption capacity (q(m)) of 234.77 mg g(-1) and adsorption/desorption cycles designed its reuse performance. The CHT/ALG/Fe3O4@SiO2(8) hydrogel was applied to treat battery effluent, achieving 99.04% Pb(II) removal, and diminishing the turbidity from 73 to 3.0 NTU. Wastewater and battery effluents contaminated with Pb(II) may be treated using an eco-friendly magnetic hybrid material based on CHT/ALG/Fe3O4@SiO2 as the adsorbent.
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