Removal and biodegradation of phenanthrene, fluoranthene and pyrene by the marine algae Rhodomonas baltica enriched from north atlantic coasts

• Published in: Bulletin of Environmental Contamination and Toxicology
• Main Authors: Arias, Andrés H., Souissi, Anissa, Glippa, Olivier, Roussin, Marion, Dumoulin, David, Net, Sopheak, Ouddane, Baghdad, Souissi, Sami
• Other Authors: Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET), Área de Oceanografía Química Bahía Blanca, Instituto Argentino de Oceanografía Bahía Blanca (IADO), Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Universidad Nacional del Sur Argentina (UNS)-Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Universidad Nacional del Sur Argentina (UNS), Departamento de Química, Universidad Nacional del Sur Argentina (UNS), Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG), Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2017
• Subjects: Accumulation; Fluoranthene; Phenanthrene; Pyrene; Removal; Rhodomonas sp; [CHIM.ANAL]Chemical Sciences/Analytical chemistry; [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces; environment; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; North Atlantic
• Online Access: https://hal.archives-ouvertes.fr/hal-01579448; https://doi.org/10.1007/s00128-016-1967-4

International audience This study is focused on the removal, accumulation and degradation of three environmental ubiquitous polycyclic aromatic hydrocarbons (PAHs), phenanthrene (PHE), fluoranthene (FLA) and pyrene (PYR), by the marine alga Rhodomonas baltica enriched from the English Channel. After separation, purification and culture in several phases, R. baltica was exposed to PAH concentrations that are frequently encountered in the field in several anthropized environments. The results showed that R. baltica can grow under PAH stress, efficiently remove up to 70% of these compounds from the medium by 216 h of culture and selectively bioaccumulate PAHs by their hydrophobicity. Between PHE, FLA and PYR, phenanthrene was the compound with higher degradation rates throughout incubation. The equilibrium partitioning theoretical approach showed that physico-chemical partitioning, rather than active bioconcentration, was the major factor governing the bioaccumulation, outlying a potential application in decontamination processes for this species.