Sorption of trace elements in soils of final disposal of municipal solid waste

  • Luiz Fernando Coutinho de Oliveira Universidade Federal de Lavras (UFLA)
  • Jéssica Soares Freitas Universidade Federal de Lavras (UFLA)
  • Camila Marques Generoso Universidade Federal de Lavras (UFLA)
  • Ronaldo Fia Universidade Federal de Lavras (UFLA)
Keywords: sorption isotherm, leaching, water contamination

Abstract

Improper disposal of municipal solid waste in soil impacts the quality of soil, water and air and is a source of organic compounds, solvents and trace elements. In this work, we studied the sorption of the Cd, Cu, Li, Pb and Zn in soils at solid waste disposal areas in the municipalities of Campo Belo, Lavras and Pouso Alegre, MG. The sorption isotherms showed a good fit to the Freundlich model, allowing us to predict the retention of these trace elements in soils from final disposal of municipal solid waste in the municipalities in the studied concentrations. The Pouso Alegre soil had the lowest potential for the leaching of trace elements; alternatively, the Lavras soil was the most vulnerable to the risk of groundwater contamination, requiring greater care with regard to the disposal of solid waste containing trace elements that are easily soluble.

Author Biographies

Luiz Fernando Coutinho de Oliveira, Universidade Federal de Lavras (UFLA)
Eng. Agrícola, Mestrado e doutorado em Engenharia Agrícola, Professor Associado IV da UFLA, Bolsista de Produtividade do CNPq
Jéssica Soares Freitas, Universidade Federal de Lavras (UFLA)
Graduanda em Engenharia Ambiental e Sanitária
Camila Marques Generoso, Universidade Federal de Lavras (UFLA)
Graduanda em Engenharia Ambiental e Sanitária
Ronaldo Fia, Universidade Federal de Lavras (UFLA)
Eng. Agrícola e Ambiental, Doutor em Engenharia Agrícola (Recursos Hídricos e Ambientais), professor Adjunto do Departamento de Engenharia da Universidade Federal de Lavras e Coordenador do Curso de Graduação em Engenharia Ambiental e Sanitária
Published
22/06/2014
Section
Papers