Molecular tools to understand the bioremediation effect of plants and earthworms on contaminated marine sediments.
J Hazard Mater
; 300: 398-405, 2015 Dec 30.
Article
em En
| MEDLINE
| ID: mdl-26223013
ABSTRACT
A meso-scale pilot plant was set up to test the efficiency of a bioremediation scheme applied to marine sediments contaminated by heavy metals and hydrocarbons. The experiment was implemented for three years in two stages using two remediation agents plants (Paspalum vaginatum and Tamarix gallica) and earthworms (Eisenia fetida). DNA and RNA-based methodologies were applied to elucidate the dynamics of the bacterial population and were related to improving biological and chemical conditions of the sediments. Bioremediation strategies were successful in removing pollutants from the contaminated sediments and specialization within the bacterial community related to the type of contamination present was detected in the different stages of the process. The highest response of Gram-positive PAH-degraders to the contamination was detected at the beginning and after the first stage of the experiment, corresponding to the uppermost values of degradation.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oligoquetos
/
Plantas
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Poluentes Químicos da Água
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Sedimentos Geológicos
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Recuperação e Remediação Ambiental
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article