Carbon Capture and Storage (CCS): Risk assessment focused on marine bacteria

• Published in: Ecotoxicology and environmental safety 2016-09, Vol.131, p.157-163
• Main Authors: Borrero-Santiago, A.R., DelValls, T.A., Riba, I.
• Format: Article
• Language: English
• Subjects: Aquatic Organisms; Bacteria; Carbon Capture and Storage; Carbon Dioxide - analysis; Carbon Dioxide - toxicity; Carbon Sequestration; Climate Change; CO2 leak; Hydrogen-Ion Concentration; Marine; Marine bacteria; Ocean acidification; Oceans and Seas; Pseudomonas; Risk Assessment; Seawater - chemistry; Toxicity Tests; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - toxicity
• ISSN: 0147-6513; 1090-2414
• DOI: 10.1016/j.ecoenv.2016.04.020

Carbon capture and storage (CCS) is one of the options to mitigate the negative effects of the climate change. However, this strategy may have associated some risks such as CO2 leakages due to an escape from the reservoir. In this context, marine bacteria have been underestimated. In order to figure out the gaps and the lack of knowledge, this work summarizes different studies related to the potential effects on the marine bacteria associated with an acidification caused by a CO2 leak from CSS. An improved integrated model for risk assessment is suggested as a tool based on the rapid responses of bacterial community. Moreover, this contribution proposes a strategy for laboratory protocols using Pseudomona stanieri (CECT7202) as a case of study and analyzes the response of the strain under different CO2 conditions. Results showed significant differences (p≤0.05) under six diluted enriched medium and differences about the days in the exponential growth phase. Dilution 1:10 (Marine Broth 2216 with seawater) was selected as an appropriate growth medium for CO2 toxicity test in batch cultures. This work provide an essential and a complete tool to understand and develop a management strategy to improve future works related to possible effects produced by potential CO2 leaks. •This work analyzes the state of the art of CCS techniques for marine bacteria assessment.•An integrated model is suggested for risk assessment in bacteria communities in case of a CO2 leak.•Dilution 1:10 with Marine Broth medium and seawater is proposed as adequate growth medium for CO2 toxicity test in batch cultures.