The technology of obtaining and study of properties of microdispersed hydrophobic adsorbent based on bentonite clay for elimination of emergency spills of oil and oil products
DOI:
https://doi.org/10.33408/2519-237X.2017.1-2.203Keywords:
adsorbent, bentonite clay, modifier, production technology, water repellency, buoyancy, oil capacity, specific surface, sorption rateAbstract
Purpose. The article is devoted to the development of technologies of obtaining and study of the properties of fine and ultrafine hydrophobic adsorbent for elimination of emergency spills of oil and oil products based on bentonite clay.
Methods. The following methods have been applied: method of determination of specific surface of adsorbent based on bentonite clay (BET method), method of study of surface morphology of bentonite clay, method of determining of chemical composition of clay, buoyancy and speed of adsorption.
Findings. It is established that the modification of clay by used bleached bentonite clay GradeF-160 together with the increase of specific surface ensures powdery of the adsorbent, required buoyancy in oil-saturated condition, and also allows increasing adsorption capacity of oil up to 2.1 g/g.
Application field of research. The adsorbent based on bentonite clay can be used for liquidation of emergency oil and petroleum products spills on the ground and water surfaces.
Conclusions. The results of the research confirm the positive impact of the modifier and method of its application to the increase in the specific surface. In addition, developed composite ultrafine hydrophobic adsorbent based on bentonite clay has buoyancy in oil-saturated condition within more than 72 hours and the rate of oil sorption to 0.05 kg/(kg·s), and its complete saturation requires less than 1 minute.
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