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Príprava a využitie kombinovaných adsorbentov na zeolitovej báze pri odstraňovaní oxyaniónových polutantov z vôd
[Development and exploitation of combined zeolite adsorbents for removing oxyanions from water]
Lenka Sabová, Eva Chmielewská, Katarína Gáplovská
Jazyk slovenština Země Česko
- MeSH
- adsorpce MeSH
- dusičnany MeSH
- látky znečišťující vodu MeSH
- regenerace a remediace životního prostředí metody MeSH
- sírany MeSH
- zeolity MeSH
Natural zeolites are very popular in environment remediation due to their abundance and cost effectiveness. Their large surface area offers surface modification to improve their adsorption properties. The aim of the study is to develop combined adsorbents based on zeolites and alginates for removal of oxyanions from water. The combined adsorbents were prepared by mixing powdered zeolite and alginate, which, in the presence of divalent cations like Ca2+ form hydrogel beads. The Ca(II)-alginate-zeolite beads were further treated with Fe3+ cations to enhance their adsorption capacity. The zeolite/alginate ratio in the adsorbent was studied in order to find the most effective adsorbent. Kinetics of nitrate and sulfate adsorption were investigated. From the measured data, adsorption isotherms were obtained and evaluated.
Development and exploitation of combined zeolite adsorbents for removing oxyanions from water
Lit.: 37
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- $a Development and exploitation of combined zeolite adsorbents for removing oxyanions from water
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- $a Katedra ekosozológie a fyziotaktiky, Prírodovedecká fakulta Univerzity Komenského v Bratislave
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- $a Natural zeolites are very popular in environment remediation due to their abundance and cost effectiveness. Their large surface area offers surface modification to improve their adsorption properties. The aim of the study is to develop combined adsorbents based on zeolites and alginates for removal of oxyanions from water. The combined adsorbents were prepared by mixing powdered zeolite and alginate, which, in the presence of divalent cations like Ca2+ form hydrogel beads. The Ca(II)-alginate-zeolite beads were further treated with Fe3+ cations to enhance their adsorption capacity. The zeolite/alginate ratio in the adsorbent was studied in order to find the most effective adsorbent. Kinetics of nitrate and sulfate adsorption were investigated. From the measured data, adsorption isotherms were obtained and evaluated.
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