Using Sarcocornia fruticosa and Saccharomyces cerevisiae to remediate metal contaminated sediments of the Ria Formosa lagoon (SE Portugal)

Ben Said, Olfa; F. G. M. Silva, Manuela; Hannier, Fanny; Beyrem, Hamouda; Chicharo, Luis

http://hdl.handle.net/10400.1/14225

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
1-s2.0-S164235931730157X-main.pdf		396.08 KB	Adobe PDF	Download

Send Feedback

Authors

Ben Said, Olfa

F. G. M. Silva, Manuela

Hannier, Fanny

Beyrem, Hamouda

Chicharo, Luis

Abstract(s)

Ria Formosa lagoon is a coastal system in the south of Portugal, characterized by sediments contaminated from urban and industrial pollution emissions. In this study, sediments from two contrasted metal contamination level sites, colonized by Sarcocornia fruticosa were used in an on-site experimentation. The heavy metal removal efficiencies of S. fruticosa with and without bioaugmentation using autochthonous metal resistant isolated yeast (Saccharomyces cerevisiae) were compared. After 15 days of incubation, the total amount of metal concentration (Cd, Pb, Ni, Cr, and Cu) in sediments and plant matter were compared. We found a striking difference between heavily contaminated site and less contaminated site. Metal reductions in heavily contaminated site were generated more by S. fruticosa which was inoculated with S. cerevisiae. In the less contaminated sediments, the higher percentage reductions were achieved with S. fruticosa alone. Our results indicate that despite the phytoremediation potential of S. fruticosa, the addition of S. cerevisiae, increases the plant phytoremediation capacity. (C) 2018 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Keywords

Heavy metals Aqueous solutions Trace elements Plant growth Phytoremediation Soil Biosorption Phytoextraction Zn Bioremediation Metal phytoremediation Sarcocornia fruticosa Bioaugmentation Saccharomyces cerevisiae Saltmarsh sediments