Heavy Metals Removal from Reclaimed Water in a Laboratory Column Using a Granitic Residual Soil
Flora Silva,
António Albuquerque,
Victor Cavaleiro,
António Carvalho,
Paulo Scalize
Affiliations
Flora Silva
School of Technology and Management, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
António Albuquerque
FibEnTech, Rua Marquês D’Ávila e Bolama, 6201-001 Covilhã, Portugal
Victor Cavaleiro
Department of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001 Covilhã, Portugal
António Carvalho
Department of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001 Covilhã, Portugal
Paulo Scalize
School of Civil and Environmental Engineering, University Federal of Goiás, Av. Universitária, 1488, Setor Universitário, CEP 74605-220 Goiânia-GO, Brazil
The removal of five heavy metals was evaluated in vertical downflow column, with a granitic residual soil, operated in discontinuous and continuous mode. The results show higher removal rates of the five metals for the continuous mode, with highest values to Zn and Pb followed by Ni, Cu and Cr. The removal of all metals occurs mainly at the top 5 cm essentially through complexation and precipitation in the form of hydroxides.
