Removal of mercury(II) from aqueous solutions by biosorption on the biomass of Sargassum glaucescens and Gracilaria corticata
| Autor: | Betsabe Saremnia, Akbar Esmaeili, Mona Kalantari |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Sargassum glaucescens
Aqueous solution biology Chemistry(all) Chemistry General Chemical Engineering Biosorption General Chemistry Red algae Corticata biology.organism_classification Mercury(II) Brown algae lcsh:Chemistry Adsorption Algae Wastewater lcsh:QD1-999 Environmental chemistry Chemical Engineering(all) Removal Gracilaria corticata |
| Zdroj: | Arabian Journal of Chemistry, Vol 8, Iss 4, Pp 506-511 (2015) |
| ISSN: | 1878-5352 |
| DOI: | 10.1016/j.arabjc.2012.01.008 |
| Popis: | Previous studies have shown the batch removal of Pb 2+ ions from wastewater and aqueous solution using two different algae; Gracilaria corticata (red algae) and Sargassum glaucescens (brown algae). The objective of this research is to study the batch removal of Hg 2+ from aqueous solution, and wastewater using marine dried red algae G. corticata (red algae) and S. glaucescens (brown algae). Marine alga was used as a low-cost absorbent. The effects of pH, biosorption time and the concentration of the Hg 2+ solution were examined in the adsorption process with S. glaucescens and G. corticata. Results showed that when we used S. glaucescens as the biosorbent, optimum conditions of pH, Hg 2+ concentration and equilibrium time were at 5, 200 ppb and 90 min, and when G. corticata was used, these conditions were at 7, 1000 ppb and 30 min. The equilibrium adsorption data are fitted to the Frundlich isotherm model, by both S. glaucescens and G. corticata . The Hg 2+ uptake by S. glaucescens was best described by the first-order rate model and G. corticata was best described by the second-order model. |
| Databáze: | OpenAIRE |
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