2024-03-29T06:57:32Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1028472019-02-08T08:07:45Zcom_10261_14com_10261_8col_10261_267
2014-10-02T10:26:33Z
urn:hdl:10261/102847
Metal mobility and toxicity to microalgae associated with acidification of sediments: CO2 and acid comparison
De Orte, M. R.
Lombardi, A. T.
Sarmiento, A. M.
Basallote, M. Dolores
Rodríguez-Romero, Araceli
Riba, Inmaculada
Del Valls, T. A.
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil)
Junta de Andalucía
Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)
Acidification
Metal mobility
Microalgae
Toxicity
Carbon capture and storage (CCS)
The injection and storage of CO2 into marine geological formations has been suggested as a mitigation measure to prevent global warming. However, storage leaks are possible resulting in several effects in the ecosystem. Laboratory-scale experiments were performed to evaluate the effects of CO2 leakage on the fate of metals and on the growth of the microalgae Phaeodactylum tricornutum. Metal contaminated sediments were collected and submitted to acidification by means of CO2 injection or by adding HCl. Sediments elutriate were prepared to perform toxicity tests. The results showed that sediment acidification enhanced the release of metals to elutriates. Iron and zinc were the metals most influenced by this process and their concentration increased greatly with pH decreases. Diatom growth was inhibited by both processes: acidification and the presence of metals. Data obtained is this study is useful to calculate the potential risk of CCS activities to the marine environment. © 2013 Elsevier Ltd.
2014-10-02T10:26:33Z
2014-10-02T10:26:33Z
2014-05
2014-10-02T10:26:34Z
artículo
Marine Environmental Research 96: 136-144 (2014)
http://hdl.handle.net/10261/102847
10.1016/j.marenvres.2013.10.003
http://dx.doi.org/10.13039/501100003593
http://dx.doi.org/10.13039/501100002322
http://dx.doi.org/10.13039/501100011011
eng
http://doi.org/10.1016/j.marenvres.2013.10.003
closedAccess
Elsevier