Biosorption of nickel ions Ni2+ by natural and modified Pinus caribaea Morelet sawdust
Cynthia Sinyeue,
Théophile Garioud,
Monika Lemestre,
Michaël Meyer,
Frédérique Brégier,
Vincent Chaleix,
Vincent Sol,
Nicolas Lebouvier
Affiliations
Cynthia Sinyeue
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia; Laboratoire Peirene, EA 7500, Université de Limoges, 87000 Limoges, France
Théophile Garioud
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia
Monika Lemestre
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia
Michaël Meyer
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia
Frédérique Brégier
Laboratoire Peirene, EA 7500, Université de Limoges, 87000 Limoges, France
Vincent Chaleix
Laboratoire Peirene, EA 7500, Université de Limoges, 87000 Limoges, France
Vincent Sol
Laboratoire Peirene, EA 7500, Université de Limoges, 87000 Limoges, France
Nicolas Lebouvier
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia; Corresponding author.
The potential of Pinus caribaea Morelet sawdust for the removal of nickel ions (Ni2+) and other metallic trace ions (Co2+, Cr3+, Mn2+) from aqueous solutions was investigated under batch conditions. Several parameters such as size of particles, contact time, pH, initial metal and biomass concentrations, desorption conditions and reusability were evaluated on natural biomass. Biosorption was fast, effective (73%) and biomaterial can be reused after five cycles. To enhance the removal capacity of nickel, pine sawdust was modified by acidic and oxidative treatments. Cellulosic residues from sawdust sequential extraction showed great biosorption capacity (96%). In the presence of a metal mixture, oxidized sawdust had better selectivity for Cr3+ ions than for Ni2+. Pinus caribaea biomass could be an environmental, inexpensive and renewable material for the depollution of water laden with metallic trace elements.
