Перегляд за Автор "Bolshanina, Svitlana"

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Ion exchange membranes for regeneration of hydrochloric acid from etching solutions
(2018) Bolshanina, Svitlana; Serdiuk, Vasyl; Ponomarova, Ludmyla; Yanovska, Anna; Ableev, Alexey
The process of regeneration of utilized hydrochloric acid etching solutions using electrochemical equipment with ion exchange membranes was examined. The products of cathode reactions were studied. It was proved that the waste solution was not only purified from contaminate ions, but the acid content increased during the electrolyzer operation.Розглядається процес регенерації відпрацьованих травильних розчинів на основі хлоридної кислоти з використанням електрохімічних пристроїв з іонообмінними мембранами. Вивчено продукти реакцій на катоді. Доведено, що при роботі електролізера відпрацьований травильний розчин не тільки очищується від забруднюючих його іонів, але і збільшується вміст кислоти.
Sorption properties of hydroxyapatite-based composites in alginate shell
(2018) Yanovska, Ganna; Bolshanina, Svitlana; Ivchenko, Viktoriya; Sydorenko, Yaroslav; Ponomarova, Ludmyla
Hydroxyapatite-based composite materials are widely used for treatment of bone defects due to their biocompatibility and osteoconductivity. In this work they were successfully combined with alginate – biopolymer with gel forming ability. Sorption properties of the composite materials towards Cu2+ and Zn2+ions were compared. It was shown that sorption of Zn2+ ions is more effective due to ion exchange properties and formation of new insoluble phase after contact with microsphere surface.