modified bentonite

Fermentation of local grape varieties Isabella and Pocklington was carried out to produce dry wine materials. The process of treatment of wine materials with ordinary bentonite and modified bentonite for clarification was studied. It was found that in all samples of wine materials, a decrease in acidity was observed in the first days of the experiment. Then, with the use of ordinary bentonite, the acidity increases almost to the original value. The acidity of wine materials when using modified bentonite systematically decreases until the end of processing.

The process mechanism for sorption of strontium and cesium from liquid radioactive waste using modified bentonites from Yaziv sulfur deposit was investigated. The technique for predicting the intensity of the sorption process based on the comparison of experimental and calculated values of mass transfer coefficients was proposed. It was detected that the process of sorption extraction of strontium and cesium from liquid medium using modified clay minerals may be best described by a three-parameter model of the adsorption isotherms.

New H2S adsorbent was synthesized on the basis of bentonite. It was analyzed using elemental and BET surface area analysis. Models and mathematical representations of mechanisms that govern the chemisorption of hydrogen sulfide on the chemically treated bentonite were presented. The models adequacy was assessed by means of statistic t-criterion.