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Laboratory scale experimental system for the assessment of acidification impacts on aquatic organismscaused by CO2 leakages from marine stable geological formations

AuthorsRodríguez-Romero, Araceli CSIC ORCID; Basallote, M. Dolores; Orte, Manoela R. de; Sarmiento, A. M.; Del Valls, T. A.; Riba, Inmaculada CSIC ORCID; Blasco, Julián CSIC ORCID
KeywordsSistema automático
Cambio climático
Automatic system
Pérdida de CO2
CO2 leakage
Climate change
Issue DateJan-2012
CitationXVI Seminario Ibérico de Química Marina (2012)
AbstractOne of the international renowned mitigation measures proposed to reduce the concentration of atmospheric CO2, which is the most important anthropogenic greenhouse gas responsible for climate change, is the capture and storage of this gas in marine stable geological formations. The main risk associated to this strategy is the seepages of retained CO2, which could cause important environmental perturbation on marine ecosystems. Although the potential economic, social and environmental viability of this option is recognised, sequestration and storage of atmospheric CO2 only make sense if the environmental consequences derived from this technology are considerably lower than that avoided from the increase of CO2 in the atmosphere. In order to evaluate the possible impacts associated to this process; this work aims to illustrate a laboratory experimental system to test the possible acidification effects on marine organisms due to CO2 leakages from storage in stable sub-seabed geological formations (CS-SSGS). The system is composed by 12 aquariums with an automatic computer system for variable injection of CO2 through sediment which it generates a range of pH in the chamber tests. We assessed the suitability of this system using diverse species such as the bivalve Ruditapes philippinarum, the polychaete Hediste diversicolor and the amphipod Ampelisca brevicornis. Lethal and sublethal measurements (bioaccumulation and biomarkers) have been employed as endpoints. We conclude that the designed system as well the conducted procedures, provide a feasible data to understand and prevent the detrimental damages on marine organisms due to CO2 leakages.
DescriptionTrabajo presentado en el XVI Seminario Ibérico de Química Marina, celebrado en Cádiz del 24 al 26 de enero de 2012.
Appears in Collections:(ICMAN) Comunicaciones congresos
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