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Erschienen in:
2020 | OriginalPaper | Buchkapitel
The Utilization of Cherry Wood Sawdust for Heavy Metals Removal from Wastewaters
verfasst von : Stefan Demcak, Zdenka Kovacova, Magdalena Balintova
Erschienen in: Proceedings of CEE 2019
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Abstract
The presence of inorganic pollutants such as heavy metal ions in industrial effluents is a worldwide issue for the environment. These pollutants are not only hazardous in exceeding concentrations but due to the property of accumulation in living organisms it is urgent to look for the plausible solutions for their reducing and treatment from wastewaters.
In this study, cherry wooden sawdust were used for removal Cu(II), Zn(II) and Fe(II) ions from model solutions with using the static and kinetic adsorption experiments. Infrared spectrometry of cherry wooden sawdust confirmed the presence of the functional groups which correspond with hemicelluloses, cellulose and lignin. At static adsorption was achieved approximately of 70% efficiency for all treated model solutions that is comparable with the efficiency of the adsorption processes reached after 5 min at kinetic experiments. The highest efficiency of Fe(II) removal (89%) was observed after 120 min of intensively shaking at frequency of 100 rpm. The mechanism of ion exchange on the beginning adsorption process by the changes of pH values was indicated.