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Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
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Документ Deep processing of permeate after nano-filtration (nf) of milky whey(2018) Zakharov, Volodymyr; Zmievskiy, Yuriy; Ustinov, Olexandr; Dzyazko, Yulia; Mironchuk, ValeriyThe method of deep processing of nano-filtration permeate of milk whey is proposed and scientifically substantiated, using ozonation and electrodialysis processes. The ozonation station can remove up to 96 % of organic compounds of NF permeate, and the amount of dissolved ozone in this case should be 20...28 mg/dm3. This treatment allows us to fully utilize NF permeate in the future. It has been established that in order to achieve the posteffect of the impossibility of microflora in the ozone-treated nanofiltration permeate, the minimum amount of dissolved ozone should not be less than 2,5 mg/dm3.Документ Reverse osmosis for concentration of sugar beet juice after the second carbonation(2016) Zmievskiy, Yuriy; Mironchuk, ValeriyPreliminary experiments of concentrationof sugar beet juice after the second carbonation were carried out. A dead-end cell with a reverse osmosis membrane was used. The dependence of the permeate flux vs pressure, which was varied from 0 to 6 MPa,has been obtained. Duringjuice concentration, a linear decrease of the flux was observed. It means no fouling of the membrane surface. Preliminary calculations show that the use of reverse osmosis provides at least 30% of energy consumption. Проведено попередні дослідження процесу концентрування дифузійного соку після другої сатурації. Застосовували непроточну мембранну комірку із зворотноосмотичною мембраною, робоча температура становила 20±3 °С. Отримано залежність питомої продуктивності від тиску, який змінювали в діапазоні від 0 до 6 МПа. Під час концентрування дифузійного соку спостерігалось лінійне зниження продуктивності мембран, що вказує на відсутність забруднення поверхні розділення. Попередні розрахунки показують, що впровадження результатів досліджень у виробництво дозволить знизити споживання енергоносіїв мінімум на 30 %.Документ Treatment of dairy effluent model solutions by nanofiltration and reverse osmosis(2014) Kirichuk, Ivanna; Zmievskiy, Yuriy; Mironchuk, ValeriyDairy industry generates a large amount of wastewaters that have high concentrations and contain milk components. Membrane processes have been shown to be convenient for wastewater treatment recovering milk components present in wastewaters and producing treated water. Materials and methods. The experiments were carried out in an unstirred batch sell using nanofiltration membranes OPMN-P (ZAO STC “Vladipor”, Russian Federation) and reverse osmosis membranes NanoRo, ZAO (“RM Nanotech”, Russian Federation). The model solutions of dairy effluents – diluted skim and whole milk were used. The nanofiltration and reverse osmosis membranes showed the same permeate flux during the concentration of model solutions of dairy effluents. The reason of this was likely membrane fouling with feed components. The fouling indexes indicated the fouling factor that was higher for RO. The higher permeate quality was obtained with RO membranes. The NF permeate containing up to 0.4 g/L of lactose and 0.75 g/L of mineral salts can be discharged or after finishing trеatment (e.g. RO or other) can be reused. The obtained NF and RO retentate corresponds to milk in composition and can be used for non-food applications or as feed supplement for animals.The studied RO and NF membranes can be used for concentration of dairy effluents at low pressure. They showed better performance and separation characteristics comparing with data of other membranes available in the literature.Документ Determination of nanofiltrated membrane mass transfer resistance after separation of whey(2012) Zmievskiy, Yuriy; Mironchuk, Valeriy; Kucheruk, DmitriThis paper presents the results of experimental studies to determine the mass transfer resistance of the new nanofiltrated membrane OPMN-P (JSC STC "Vladipor", Russia), and its mass transfer resistance after whey separation at the pressure of 2.5 MPa. It is found out that the value of mass transfer resistance formed by the interaction of solutes with the membrane is 5 times bigger than the resistance of the new membrane.