Biosorption of Cu(II) Ions by Kelps, Large Brown Algae Seaweeds, Saccharina japonica and Saccharina sculpera
| Autor: | Katsuyuki Kudo, Shunsuke Kuzuhara, Osamu Terakado |
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| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
biology Chemistry Metals and Alloys Biosorption Kelp chemistry.chemical_element 010501 environmental sciences Environmental Science (miscellaneous) Saccharina japonica 010402 general chemistry biology.organism_classification 01 natural sciences Copper 0104 chemical sciences Brown algae Adsorption Mechanics of Materials Environmental chemistry Titration 0105 earth and related environmental sciences |
| Zdroj: | Journal of Sustainable Metallurgy. 4:455-460 |
| ISSN: | 2199-3831 2199-3823 |
| Popis: | The adsorption experiments of two kinds of kelps, large brown algae seaweeds, Saccharina japonica and Saccharina sculpera, have been carried out for the aqueous solution Cu2+ ions. A copper uptake of around 0.3 mmol per gram of kelp powder with particle size under 250 μm was observed for the former brown algae at the equilibrium copper concentration of 19 mg/L. It was found that further increase in the copper concentration gave rise to the increase in the metal uptake, reaching 1.9 mmol/g kelp at 47 mg/L. This increase was presumably due to the diffusion of the ion through the gel, formed at the initial stage of the adsorption, into the inner alginates of the kelp. Titration measurements allowed us to gain a quantitative understanding of the apparent surface concentration of the adsorption sites as well as the adsorption capacity. |
| Databáze: | OpenAIRE |
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