 ISSN 1392-110X
ISSN 2029-056X (online)
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2006 m. Nr. 4
 Experimental research on sorption of petroleum products from water by natural clinoptilolite and vermiculite
Evelina BRANNVALL, Aušra MAŽEIKIENĖ, Marina VALENTUKEVIČIENĖ
An experimental study of the sorption of petroleum products (PP) from aqueous solutions by natural vermiculite and zeolite (clinoptilolite) was carried out. Two different sizes of zeolite particles were used: 0.63–1.0, 1.0–3.0 mm and 1.0–3.0 mm fractions of vermiculite. Zeolite and vermiculate material was washed and dried at 105 °C in an oven before using it in the filter bed. 40 l of snowmelt water, 1 l of gasoline and 1 l of diesel passed the filter charged with zeolite and vermiculite. Comparison of the results showed that the highest removal of PP from water solution was obtained by using the finest grain-sized zeolite. The removal efficiency was 89.8% and 76.4% respectively for 0.63–1.0 mm and 1.0–3.0 mm particle size zeolite. The highest PP removal efficiency (92.4%) was achieved by using 1.0–3.0 mm particlesized vermiculite.
Keywords: zeolite, vermiculite, water treatment, sorption
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