FN Archimer Export Format PT C TI Study of biosorption of copper and silver by marine bacterial exopolysaccharides BT AF DESCHATRE, Marine GHILLEBAERT, F. GUEZENNEC, Jean SIMON-COLIN, Christelle AS 1:1,2,3,4;2:5;3:6;4:2,3,4; FF 1:;2:;3:;4:PDG-REM-EEP-LMEE; C1 Mexel Ind SAS, Verberie, France. IFREMER, LMEE, UMR 6197, Issy Les Moulineaux, France. UEB, UBO, LMEE, UMR 6197, Rennes, France. CNRS, LMEE, UMR 6197, Paris, France. Ecotox, Arcueil, France. AiMB, Plouzane, France. C2 MEXEL IND SAS, FRANCE IFREMER, FRANCE UBO, FRANCE CNRS, FRANCE ECOTOX, FRANCE AIMB, FRANCE SI BREST SE PDG-REM-EEP-LMEE UM BEEP-LM2E IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france UR https://archimer.ifremer.fr/doc/00601/71336/69766.pdf LA English DT Proceedings paper DE ;biosorption;bacterial exopolysaccharides;copper and silver removal;bioremediation AB Metal bioremediation was studied by biosorption of analytical grade copper Cu(II) and silver Ag(I) by an exopolysaccharide (EPS) produced by marine bacteria from French Polynesia. Colorimetric analysis showed that EPS was composed of neutral sugars, uronic acids, acetate and especially high sulfate amount (29%). Metal biosorption experiments were conducted in batch process. Results showed that the maximum sorption capacities calculated according to Langmuir model were 400 mg g(-1) EPS (6.29 mmol g(-1)) and 256 mg g(-1) EPS (2.38 mmol g(-1)) for Cu(II) and Ag(I), respectively. The influence of pH, biosorbent concentration, ionic strength on EPS biosorption capacities was investigated. Results showed that bacterial EPS can be considered as very promising for copper and silver bioremediation. Further development in dynamic and continuous process at the industrial scale will be organized next. PY 2015 CT Water Resources Management VIII. 2015. C.A. Brebbia (Ed). ISBN 978-1-84564-960-9 eISBN 978-1-84564-961-6. WIT Transactions on Ecology and the Environment. Volume 196, pp.549-559 DI 10.2495/WRM150471 ID 71336 ER EF