Fitorremediação de solos contaminados com óleos lubrificantes usados / Phytoremediation of soils contaminated with used lubrificant oils

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

In Brazil, the logistics of collecting used lubricant oil is regulated by the National Petroleum Agency (ANP). However, there is risk of environmental contamination during transport, storage, recycling and final disposal of waste. This study aimed to verify if the capacity for phytoextraction and accumulation of metals in soils contaminated with used lubricant oil can be evaluated in early stage of development of seedlings, as a method of screening for future studies of phytoremediation. Were studied species with potential phytoremediator and tolerant of the presence of oil in previous studies the second floor of the research group Bioprocess - sunflower, soybean, castor bean and acacia - in addition to peanuts and forage turnip. The sunflower had an apparently superior performance of removal for most of the metals tested, as provided in the literature. The turnip forage, the same way that the germination, obtained better results in the removal of metals, compared to peanuts. The acacia, a kind of slow development, produced little biomass in the initial period of growth, which hindered the quantification of metals. Only the biomass produced in medium with 0.5% oil was used. The sunflower and turnip forage appeared to be tolerant of the presence of used lubricant oil and showed the best removal rates of metals in concentrations of 4 to 8% in the early stages of plant growth, which suggests it is of species with great potential for phytoremediation of multi-contaminated areas.

ASSUNTO(S)

phytoremediation. contaminated soil. lubricant oil. metals fitorremediação. solo contaminado. Óleo lubrificante. metais quimica

ACESSO AO ARTIGO

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