ADSORPTION OF HEAVY-METAL IONS BY CHEMICALLY-MODIFIED PINUS-PINASTER BARK

Authors
VAZQUEZ G ANTORRENA G GONZALEZ J DOVAL MD
Citation
G. Vazquez et al., ADSORPTION OF HEAVY-METAL IONS BY CHEMICALLY-MODIFIED PINUS-PINASTER BARK, Bioresource technology, 48(3), 1994, pp. 251-255
Citations number
24
Categorie Soggetti
Energy & Fuels","Biothechnology & Applied Migrobiology",Agriculture
Journal title
Bioresource technology → ACNP
ISSN journal
09608524
Volume
48
Issue
3
Year of publication
1994
Pages
251 - 255
Database
ISI
SICI code
0960-8524(1994)48:3<251:AOHIBC>2.0.ZU;2-#
Abstract
The ambient temperature adsorption of the metal cations Zn2+, Cu2+ and Pb2+ on Pinus pinaster bark pretreated with acidified formaldehyde so lution, and particularly the influences of the pretreatment conditions and of the pH of the cation solution on the adsorption capacity of th e bark, were investigated. The equilibrium data were satisfactorily fi tted by Freundlich isotherms. The bark was an excellent adsorbent, sui table for removal of toxic ions from wastewater with efficiency compar able to commercially available adsorbents, but at a reduced cost.