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Metal removal by immobilised and non-immobilised Azolla filiculoides |
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| Authors: | R.V. Fogarty P. Dostalek M. Patzak J. Votruba E. Tel-Or J.M. Tobin |
| Affiliation: | (1) School of Biotechnology, Dublin City University, Dublin, 9, Ireland;(2) Dept. of Fermentation and Bioengineering, Institute of Chemical Technology, Prague, 6, Czech Republic;(3) Academy of Sciences, Prague, Czech Republic;(4) Department of Agricultural Botany, The Hebrew University of Jerusalem, Rehovot, 76100, Israel |
| Abstract: | Milled-sieved and epichlorhydrin-immobilised Azolla biosorbed ca. 363 and 320  mol Cu2+ g–1 from a 100 mg l–1 solution. Efficiency of Cu2+ removal by columns was in the order epichlorohydrin-immobilised Azolla>milled-sieved Azolla>untreated Azolla. The 2.5 g epichlorohydrin-immobilised Azolla column demonstrated complete metal sequestration from ca. 12 l of influent 5 mg Cu2+ l–1 and was still at less than 75% saturation even after ca. 22 l had passed through the column. EDTA effectively desorbed Cu2+ with a ca. 55-fold decrease in volume. |
| Keywords: | biosorption metals immobilised Azolla columns |
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