title: Simulating CO2leakage from sub-seabed storage to determine metal toxicity on marine bacteria.
abstract: CO2storage in sub-seabed marine geological formations has been proposed as an adequate strategy to mitigate high CO2concentration from the atmosphere. The lack of knowledge about the potential risks of this technology on marine bacteria population in presence of metals has lead us to perform laboratory-scale experiments in order to evaluate its consequences. Thus, the effects of Zn and Cd were studied under acid conditions on Roseobacter sp. and Pseudomonas litoralis. Bacterial abundance (cellsmL-1), growth rates (μ, h-1), relative inhibitory effects of CO2(RICO2), and production of Extracellular Polysaccharides Substances (EPS) (μgGlucosecells-1) were evaluated. A decreasing exopolysaccharides (EPS) production was found under low pH. Bacterial abundance as well as growth rates showed negative effects. Data obtained in this work are useful to determine the potential effects associated with enrichment of CO2and metals on the marine ecosystem.
authors.affiliation: UNESCO/UNITWIN Wicop, Departamento de Química-Física, Facultad de Ciencias Del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain. Electronic address: alejandradiazgt@gmail.com.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Díaz-García
authors.affiliation: UNESCO/UNITWIN Wicop, Departamento de Química-Física, Facultad de Ciencias Del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: Ana R
authors.initials: AR
authors.lastname: Borrero-Santiago
authors.affiliation: UNESCO/UNITWIN Wicop, Departamento de Química-Física, Facultad de Ciencias Del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: T
authors.initials: T
authors.lastname: Ángel DelValls
authors.affiliation: UNESCO/UNITWIN Wicop, Departamento de Química-Física, Facultad de Ciencias Del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Riba
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000633:toxicity*; D011549:Pseudomonas / Q000187:drug effects*; D041904:Roseobacter / Q000187:drug effects*; D012623:Seawater / Q000737:chemistry*; D014871:Water Microbiology; D014874:Water Pollutants, Chemical
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide
keywords: Carbon Capture and Storage (CCS); Marine bacteria; Metal toxicity; Risk assessment