| Issue |
E3S Web Conf.
Volume 22, 2017
International Conference on Advances in Energy Systems and Environmental Engineering (ASEE17)
|
|
|---|---|---|
| Article Number | 00175 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/e3sconf/20172200175 | |
| Published online | 07 November 2017 | |
Implementation of ferric hydroxide-based media for removal of toxic metalloids
1
Wrocław University of Science and Technology, Faculty of Environmental Engineering, Wybrzeże S. Wyspiańskiego 27, 50-370 Wrocław, Poland
* Corresponding author: malgorzata.szlachta@pwr.edu.pl
Effective removal of inorganic arsenic species is possible by application of the sorption technique with the use of iron-based sorbents. This study investigates the removal of arsenic(III) and arsenic(V) from an aqueous solution by application of a granular ferric hydroxide-based sorbent. The performance of tested media was evaluated based on the batch and fixed-bed adsorption studies. The efficiency of the process was determined with various treatment times, adsorbent doses, initial concentrations of arsenic and various solution temperatures. The obtained adsorption data were fitted with pseudo-first and second-order kinetic models and Langmuir and Freundlich isotherm equations. It was observed that the overall arsenite removal was lower when compared to the arsenate, and all tested operating parameters influenced the process efficiency. The experiments under dynamic conditions showed high treatment capacity and stability of tested adsorbent over a long period of time.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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