Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2548
Título: Leaching behaviour and ecotoxicity evaluation of chars from the pyrolysis of forestry biomass and polymeric materials
Autor: Bernardo, Maria S.
Mendes, S.
Lapa, N.
Gonçalves, Margarida
Mendes, Benilde
Pinto, Filomena
Lopes, M. Helena
Palavras-chave: Pyrolysis
Chars
Leaching
Ecotoxicity
Environmental risks
Data: 2014
Editora: Elsevier
Citação: Bernardo, M.; Mendes, S.; Lapa, N.; Gonçalves, M.; Mendes, B.; Pinto, F.; Lopes, H. Leaching behaviour and ecotoxicity evaluation of chars from the pyrolysis of forestry biomass and polymeric materials. In: Ecotoxicology and Environmental Safety, 2014, Vol. 107, p. 9-15
Resumo: The main objective of this study was to assess the environmental risk of chars derived from the pyrolysis of mixtures of pine, plastics, and scrap tires, by studying their leaching potential and ecotoxicity. Relationships between chemical composition and ecotoxicity were established to identify contaminants responsible for toxicity. Since metallic contaminants were the focus of the present study, an EDTA washing step was applied to the chars to selectively remove metals that can be responsible for the observed toxicity. The results indicated that the introduction of biomass to the pyrolysis feedstock enhanced the acidity of chars and promote the mobilisation of inorganic compounds. Chars resulting from the pyrolysis of blends of pine and plastics did not produce ecotoxic eluates. A relationship between zinc concentrations in eluates and their ecotoxicity was found for chars obtained from mixtures with tires. A significant reduction in ecotoxicity was found when the chars were treated with EDTA, which was due to a significant reduction in zinc in chars after EDTA washing.
URI: http://hdl.handle.net/10400.9/2548
ISSN: 0147-6513
Versão do Editor: http://dx.doi.org/10.1016/j.ecoenv.2014.05.007
Aparece nas colecções:UB - Artigos em revistas internacionais

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