| Autor: |
Martin Valica, Tomáš Lempochner, Linda Machalová, Vanda Adamcová, Patrícia Marková, Lenka Hutárová, Martin Pipíška, Juraj Krajčovič, Miroslav Horník |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Engineering Proceedings, Vol 57, Iss 1, p 41 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2673-4591 |
| DOI: |
10.3390/engproc2023057041 |
| Popis: |
The aim of this work was to evaluate the possibility of applying the dried biomass of E. gracilis var. bacillaris as a biosorbent for the removal of Cd. Experiments were carried out under conditions of batch systems involving aqueous solutions labelled with 109CdCl2. From the kinetics of Cd biosorption, it can be assumed that the Cd removal was a rapid process that achieved the concentration equilibrium of [Cd]biomass:[Cd]solution in the first minutes of the interaction. In individual experiments, the effect of solution pH, initial biosorbent, or Cd concentration was evaluated. According to MINEQL+ speciation modelling, it was found that the biosorption of Cd decreased linearly corresponding to a decrease in the proportion of Cd2+ in the solution. The biosorption data were well fitted to the Langmuir model of adsorption isotherm in comparison with the Freundlich model. The maximum biosorption capacity of the dried biomass of E. gracilis var. bacillaris for the removal of Cd was predicted and reached the value Qmax = 0.13 mmol/g or 14.1 mg/g (d.w.), respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
