Parâmetros de transporte de metais pesados em resíduos sólidos urbanos
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Engenharia na Agricultura
Abstract
Objetivou-se, com a realização deste trabalho, estudar a influência da idade dos resíduos sólidos urbanos aterrados
nos parâmetros de transporte dos metais pesados contidos no percolado produzido por resíduos sólidos urbanos recém
coletados (RSU_Fresco). Nos ensaios, foram utilizados resíduos sólidos urbanos com 15 anos (RSU_Antigo) e 8 anos
(RSU_Maduro) de aterramento e percolado com concentração média de 0,146 mg L -1 de Cu, 0,046 mg L -1 de Cd, 17,2
mg L -1 de Zn e 0,135 mg L -1 de Pb. Dentre os resíduos avaliados, o RSU_Antigo foi o que apresentou maior a capacidade de retenção dos metais. Os fatores de retardamento dos metais pesados nos resíduos estudados (RSU_Antigo e RSU_
Maduro) seguiram a seguinte seqüência de magnitude: Pb>Cu>Zn>Cd.
The aim of this work was to study the influence of the age of the buried urban solid residues (RSU) on transport parameters of the heavy metals contained in leachate produced by Fresh RSU. The study was done in the urban solid residues of 15 (RSU_Old) and 8 years (RSU_Mature) old dumps and leachate having a mean concentration of 0.146 mg L -1 of Cu, 0.046 mg L -1 of Cd, 17.2 mg L -1 of Zn and 0.135 mg L -1 of Pb. The data showed that the RSU-old have higher capacity of retaining such metals. The magnitude of retardation factor was Pb>Cu>Zn>Cd.
The aim of this work was to study the influence of the age of the buried urban solid residues (RSU) on transport parameters of the heavy metals contained in leachate produced by Fresh RSU. The study was done in the urban solid residues of 15 (RSU_Old) and 8 years (RSU_Mature) old dumps and leachate having a mean concentration of 0.146 mg L -1 of Cu, 0.046 mg L -1 of Cd, 17.2 mg L -1 of Zn and 0.135 mg L -1 of Pb. The data showed that the RSU-old have higher capacity of retaining such metals. The magnitude of retardation factor was Pb>Cu>Zn>Cd.
