Authors:
Lílian Karla de Oliveira, Camila Almeida Melo, Leonardo Fernandes Fraceto, María Aurora Armienta Hernández, André Henrique Rosa
Book:
Proceedings of the 14th International Peat Congress
Venue:
Stockholm
Keywords:
arsenic, peat, remediation
Documentfile:
Oliveira et al 2012: Capacity Adsorption of Arsenic(V) on Peat: A Possible Remediation
Summary:
Theme IX. Tropical peatlands
SUMMARY
The purpose of this work was to evaluate the adsorption of arsenic ions by peat collected in the state of Sergipe, Brazil. The peat samples were characterized by 13C NMR and elemental analysis. The adsorption experiments were performed in batches at three different pH levels in the peat samples and arsenic concentration of 2 mg l-1 of. The equilibrium time of adsorption of arsenic in peat samples was reached in 24 hours. The peat samples showed good adsorption capacity with the highest adsorption capacity observed at pH 5.5. Adsorption kinetics followed the model of pseudo-second order and slow kinetics.