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Cold Plasma and Acid Treatment Modification Effects on Phonolite
Acta Chimica Slovenica
|September 2, 2017
Summary
Cold plasma and hydrochloric acid treatments modified phonolite structure and acidity. Acid treatment significantly increased surface area and altered properties, enhancing its potential for adsorbing impurities from waste cooking oil.
Area of Science:
- Geochemistry
- Materials Science
- Environmental Chemistry
Background:
- Phonolite, a volcanic rock, possesses unique properties.
- Investigating material modifications for environmental applications is crucial.
Purpose of the Study:
- To analyze structural and acid property changes in phonolite after cold plasma and hydrochloric acid treatment.
- To evaluate the adsorption capacity of treated phonolite for specific impurities in waste cooking oil.
Main Methods:
- X-ray Diffraction (XRD) for structural analysis.
- X-ray Fluorescence (XRF) for elemental composition.
- Brunauer-Emmett-Teller (BET) for specific surface area.
- Temperature Programmed Desorption of Ammonia (TPD-NH3) for acid properties.
- Fourier-Transform Infrared (FT-IR) spectroscopy.
- Adsorption tests for Ca, K, Mg, P, and Na from waste cooking oil.
Main Results:
- Cold plasma treatment caused minor surface changes in phonolite.
- Hydrochloric acid treatment resulted in a significantly larger total surface area.
- Acid treatment altered the phonolite's structure, composition, and acid properties.
- Treated phonolite demonstrated potential for adsorbing impurities from waste cooking oil.
Conclusions:
- Hydrochloric acid treatment is effective in modifying phonolite's surface area and properties.
- The altered phonolite shows promise for applications in waste cooking oil purification.
