Chemical modifications on pinus bark for adsorption of toxic metals

Current research produced modified adsorbents from pinus bark with high removal capacity of Cd(II), Pb(II) and Cr(III) from water. Pinus barks were obtained directly from pinus logs and its biomass was chemically modified by solutions of H2O2, H2SO4 and NaOH 0.1 mol L−1. The adsorbents were characte...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental chemical engineering 2018-02, Vol.6 (1), p.1271-1278
Main Authors: Schwantes, Daniel, Gonçalves, Affonso Celso, Campagnolo, Marcelo Angelo, Tarley, César Ricardo Teixeira, Dragunski, Douglas Cardoso, de Varennes, Amarilis, dos Santos Silva, Artur Kinkas, Conradi, Elio
Format: Article
Language:English
Subjects:
Advanced water treatment
Bioremediation
Biosorption
Environment
Modified adsorbents
Toxic metal
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Current research produced modified adsorbents from pinus bark with high removal capacity of Cd(II), Pb(II) and Cr(III) from water. Pinus barks were obtained directly from pinus logs and its biomass was chemically modified by solutions of H2O2, H2SO4 and NaOH 0.1 mol L−1. The adsorbents were characterized by means of their chemical composition, their point of zero charge (pHPZC), FT-IR, SEM, porosity and superficial area. Experiments evaluated the effect of contact time and equilibrium. Best results showed an increase in adsorption capacity for Cd, Pb and Cr of 413 (Qm of Langmuir), 259 (Qm of Langmuir) and 207% (Kf of Freundlich) for P. NaOH, P. NaOH and P. H2SO4, respectively. The modifying solutions were effective, and chemically modified the pinus bark, increasing the removal quantity of metals from water.
ISSN:2213-3437
2213-3437
DOI:10.1016/j.jece.2018.01.044