Evaluation of the environmental hazard of char residues produced in the co-pyro...

• Author(s): Bernardo, Maria S. ; Lapa, N. ; Gonçalves, Margarida ; Barbosa, Rui ; Mendes, Benilde ; Pinto, Filomena ; Gulyurtlu, Ibrahim
• Date: 2009
• Persistent ID: http://hdl.handle.net/10400.9/612
• Origin: Repositório do LNEG
• Subject(s): Co-pyrolysis; Ecotoxicity; Leachates; Organic contaminants; Wastes
• Document Type: Conference Object
• Language: English

Description

Char residues produced in co-pyrolysis of different wastes were characterized through chemical and toxicity tests. A fraction of the solid chars was treated by extraction with dichloromethane. Different volatilit fractions present in the extracted and non extrated char were evaluated. A selected group of heavy metals was determined in both chars. Chars were subjected to the leaching test ISO/TS 21268-2 and resulting eluates were further characterized by determining a group of inorganic parameters and concentrations of several organic contaminants. An ecotoxicological characterization was performed by using the bio-indicator Vibrio fischeri. The chemical and ecotoxicological characterization led to a classification on the chars as ecotoxic