Natural attenuation and bioremediation of Prestige fuel oil along the Atlantic coast of Galicia (Spain)

Torres Pérez-Hidalgo, Trinidad José (2006). Natural attenuation and bioremediation of Prestige fuel oil along the Atlantic coast of Galicia (Spain). "Organic Geochemistry", v. 37 (n. 12); pp. 1869-1884. ISSN 0146-6380.

Description

Title: Natural attenuation and bioremediation of Prestige fuel oil along the Atlantic coast of Galicia (Spain)
Author/s:
  • Torres Pérez-Hidalgo, Trinidad José
Item Type: Article
Título de Revista/Publicación: Organic Geochemistry
Date: 2006
ISSN: 0146-6380
Volume: 37
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería Geológica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Heavy fuel oil spilled from the oil tanker Prestige in November 2002 affected hundreds of km of Spanish shoreline. We carried out a two year study at two highly contaminated sites in order to monitor natural attenuation of the residues coating shore rocks and to test the effectiveness of bioremediation with an oleophilic fertilizer (S200). The methodology included an innovative approach for oil load calculation (based on image analysis techniques), the analysis of the fate of hydrocarbons by means of chemical biomarkers and different microbiological techniques for isolating and examining hydrocarbon degraders. Considerable hydrocarbon depletion from shorelines (^100% for light-medium linear alkanes and ^ 3 5% for aromatics such as pyrene) was observed within the first months after the spill. However, this natural attenuation effect dramatically slowed down in the following year, although partial enhancement (especially for the aromatic fraction) was attained as a result of the application of S200 to stimulate indigenous microorganisms. In addition, one of the main outcomes of this work concerns the remarkable hydrocarbon depletion achieved at points where fresh water flowed through the shore rocks. The study of samples collected where this natural attenuation phenomenon took place made it possible to isolate heterotrophic bacteria and fungi that are likely to cooperate with cyanobacteria in hydrocarbon biodegradation. The overall results strongly advocate the implementation of new bioremediation approaches, including alternatives such as the use of natural fresh water to irrigate polluted areas.

More information

Item ID: 3223
DC Identifier: http://oa.upm.es/3223/
OAI Identifier: oai:oa.upm.es:3223
Deposited by: Biblioteca ETSI Minas y Energía
Deposited on: 07 Jun 2010 08:36
Last Modified: 20 Apr 2016 12:46
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