Investigation of arsenic removal from aqueous solution through selective sorption and nanofiber-based filters
| Autor: | Vladimir Sedlarik, Miroslava Kovarova, Dusan Kimmer, Lenka Lovecka, Vladimír Adamec, Klaudia Köbölová, Ivo Vincent, Eva Domincová Bergerová |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Polyurethane
Adsorptive filtration Environmental Engineering Sorbent Health Toxicology and Mutagenesis chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Applied Microbiology and Biotechnology Arsenic Contact angle chemistry.chemical_compound Adsorption 020401 chemical engineering 0204 chemical engineering Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Aqueous solution Public Health Environmental and Occupational Health Sorption Pollution Electrospinning Iron oxide hydroxide chemistry Chemical engineering Hydroxide Research Article |
| Zdroj: | J Environ Health Sci Eng Journal of Environmental Health Science and Engineering. 2021, vol. 19, issue 2, p. 1-14. |
| Popis: | BACKGROUND: This research paper focuses on removing of arsenic from contaminated water via a nanofibrous polymeric microfiltration membrane, applied in prospective combination with an inorganic sorbent based on iron oxide hydroxide FeO(OH). MATERIALS AND METHODS: Nanofibrous materials were prepared by electrospinning from polyurethane selected by an adsorption test. The chemical composition (FTIR), morphology (SEM, porometry) and hydrophilicity (contact angle) of the prepared nanostructured material were characterized. The process of eliminating arsenic from the contaminated water was monitored by atomic absorption spectroscopy (AAS). The adsorption efficiency of the nanofibrous material and the combination with FeO(OH) was determined, the level of arsenic anchorage on the adsorption filter was assessed by a rinsing test and the selectivity of adsorption in arsenic contaminated mineral water was examined. RESULTS: It was confirmed that the hydrophilic aromatic polyurethane of ester type PU918 is capable of capturing arsenic by complexation on nitrogen in its polymer chains. The maximum As removal efficiency was around 62 %. Arsenic was tightly anchored to the polymeric adsorbent. The adsorption process was sufficiently selective. Furthermore, it was found that the addition of even a small amount of FeO(OH) (0.5 g) to the nanofiber filter would increase the efficiency of As removal by 30 %. CONCLUSIONS: The presented results showed that an adsorption filter based on a polyurethane nanostructured membrane added with an inorganic adsorbent FeO(OH) is a suitable way for the elimination of arsenic from water. However, it is necessary to ensure perfect contact between the surface of the nanostructure and the filtered medium. |
| Databáze: | OpenAIRE |
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