Evaluation of the Impact of Different Natural Zeolite Treatments on the Capacity of Eliminating/Reducing Odors and Toxic Compounds

Unlike odorants that mask odors, natural zeolite acts as a molecular sieve that captures and eliminates odors. Different treatment methods can be applied to influence the properties of the natural zeolites. To enhance the odor adsorption capacities of the natural zeolite two types of treatment metho...

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Bibliographic Details
Published in:Materials 2021-07, Vol.14 (13), p.3724
Main Authors: Fuss, Vanda Liliana Babalau, Bruj, Gabriel, Dordai, Lucian, Roman, Marius, Cadar, Oana, Becze, Anca
Format: Article
Language:English
Subjects:
Acids
Adsorption
Ammonia
Carbon dioxide
Decomposition
Environmental impact
Food
Gases
Heat treatment
Humidity
Hydrogen sulfide
Molecular sieves
Odorants
Odors
Zeolites
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Summary:Unlike odorants that mask odors, natural zeolite acts as a molecular sieve that captures and eliminates odors. Different treatment methods can be applied to influence the properties of the natural zeolites. To enhance the odor adsorption capacities of the natural zeolite two types of treatment methods were applied: chemical (acid, basic) and thermal. The initial natural zeolites and the activated one were characterized using X-ray diffraction (XRD) and scanning electron microscope (SEM-EDX). Two experiments were performed to establish the odor adsorption capacity of the activated natural zeolites. The best zeolite for the adsorption of humidity, ammonia and hydrogen sulfide was the 1–3 mm zeolite activated through thermal treatment. For the adsorption of PAHs, the best zeolite was the one activated through basic treatment, with an adsorption capacity of 89.6 ng/g.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14133724