Перегляд за Автор "Chernova, Nataliia"

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Manganese removal from groundwater by oxide-carbonate manganese ore
(2012) Mamchencko, Aleksei; Savchenko, Olga; Chernova, Nataliia; Yakupova, Irina
Most of underground water sources in Ukraine contain increased concentration of manganese. Modified natural oxide-carbonate manganese ore (OCMO-Mn) was obtained. The main technological parameters of manganese removal from water onto filtration medium, average rate of filtration and backwashing frequency was studied.
Obtaining purified water research process using ion exchange technologies
(2022) Kravets, Myroslava; Barashovets, Yaroslav; Chernova, Nataliia
The ion exchange technologies expediency to obtain purified water was established. The necessary stage of work with commercial ion exchangers was their treatment with 20-25% sodium chloride solution to prevent grains cracking and some organic impurities "salting out" from the ion exchangers matrix. By comparing total water hardness change it was found that the most effective stage of purification is FMA, loaded with Dowex MB 50. The softening reached degree was 90% for the volume of purified water 215 dm3.