Comparison of Radon Adsorption on Hematite and Charcoal Activated Powder in Air

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Croatica Chemica Acta Pub Date : 2023-01-01 DOI:10.5562/cca4013
Vanja Radolić, Goran Šmit, Igor Miklavčić, Marina Poje Sovilj
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引用次数: 0

Abstract

: Adsorption of radon in the air was investigated on hematite, α -Fe 2 O 3 , and charcoal activated powder. Hematite had almost doubled efficiency in comparison to charcoal activated powder in the same experimental conditions but over a significantly longer per iod. Adsorption isotherms revealed a typical Langmuir shape on hematite and almost linear on activated charcoal. Linear models of Langmuir, Freundlich and Dubinin-Radushkevich isotherms showed that radon adsorption on both adsorbents is a favourable chemical process, with stronger interactions on hematite, that takes place forming a monolayer of ads orbed radon. The kinetic analysis confirmed forming of a monolayer on both adsorbents and two rate-controlling steps during radon adsorption on hematite, instead of one on activated charcoal, which could be considered as a reason of slower rate of process on hematite .
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空气中赤铁矿粉与活性炭粉吸附氡的比较
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来源期刊
Croatica Chemica Acta
Croatica Chemica Acta 化学-化学综合
CiteScore
0.60
自引率
0.00%
发文量
3
审稿时长
18 months
期刊介绍: Croatica Chemica Acta (Croat. Chem. Acta, CCA), is an international journal of the Croatian Chemical Society publishing scientific articles of general interest to chemistry.
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