Adsorption Extraction of Chromium Ions (III) with the Help of Bentonite Clays
Myroslav Malovanyy 1  
,   Olga Palamarchuk 2  
,   Iryna Trach 3  
,   Halyna Petruk 4  
,   Halyna Sakalova 4  
,   Khrystyna Soloviy 1  
,   Tamara Vasylinych 4  
,   Ivan Tymchuk 1  
,   Nataliya Vronska 1  
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Viacheslav Chornovil Institute of Sustainable Development, Lviv Polytechnic National University, S. Bandera Str. 12, Lviv, 79013, Ukraine
Educational and Scientific Institution of Pedagogy, Psychology, Training of Specialists of Higher Qualification, Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University, Ostrozhskogo street 32, Vinnytsia, 21100, Ukraine
Institute of Ecology, Vinnytsia National Technical University, Khmelnytsky highway 95, Vinnytsia, 21021, Ukraine
Natural Sciences and Geography Faculty, Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University, Vinnytsia, Ukraine
Ivan Tymchuk   

Lviv Polytechnic National University
Publication date: 2020-10-01
J. Ecol. Eng. 2020; 21(7):178–185
This work is dedicated to development of scientific technologies of wastewater purification of different industrial enterprises from chrome ion by the way of adsorption with the help of bentonite from Cherkasy field in dynamic conditions. Perspective and efficacy of bentonite clays application for wastewater purification are confirmed by their advantages over other sorbents, that is: they win in accessibility, cost, and possibility of regeneration and multiple usages. The level of wastewater purification during adsorption with a stationary sorbent layer under static conditions and under conditions of perfect mixing at different concentrations of chromium ions (III) and quantities of the dosed sorbent was determined. The significant difference in the purification level ranges from 70÷87 % and is more dependent on the stock concentration of chromium ions. It has been found that the purification time of the same volumes of solutions for low concentrations is almost two times shorter under constant stirring, and of the same level at the stock concentrations of 1500mg/dm3. The technological schemes of wastewater purification from heavy metal ions contamination were developed.