Перегляд за Автор "Melnyk, Lyudmila"

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Adsorption of ammonia nitrogen from water and of nitrate ions from vegetable juices by shungite
(2011) Melnyk, Lyudmila; Sheiko, Tamila
Found that shungite has effective adsorption properties relative to nitrate ions from beet juice. Shungit also absorbs ammonium ions in drinking water. An illustration of the mechanism of adsorption processes in the "solid - liquid".
Adsorption of heavy metals ions from liquid media by palygorscite
(2015) Melnyk, Lyudmila; Bessarab, Alexander; Matko, Svetlana; Malovanyy, Miroslav
Досліджено процес адсорбції природним мінералом палигорскітом важких металів із стічних вод і харчових продуктів (яблучний сік). Вивчено процеси вилучення міді, кадмію, свинцю, ртуті та цинку. Визначено раціональні технологічні параметри цих процесів. Встановлено механізм адсорбції важких металів з яблучного соку палигорскітом.
Adsorptive purification of food raw materials and semi-finished products with help of carbon and natural adsorbents
(2011) Mank, Valeriy; Melnyk, Lyudmila
For the study of adsorptive capacities of paligorskit and for the comparison between them and the adsorptive capabilities o f active carbons in order to create industrial combined sorbents, the authors conducted the research on adsorption of the ethyl impurities with the help of paligorskit, active carbon and combined adsorbents (whereas, active carbons and paligorskit were in the ratio 10:90, 30:70, 50:50). The best results were received when refining aqueous-alcoholic solutions with the help of combined adsorbents. The best results were obtained using a combined adsorbent ratio 10:90.
He use of sulphophtalein dyes immobilized on anionite AB-17x8 to determine the contents of Pb(II), Cu(II), Hg(II) and Zn(II) in liquid medium
(2017) Kostenko, Elizaveta; Melnyk, Lyudmila; Matko, Svetlana; Malovanyy, Miroslav
The conditions of the immobilization of xylenol orange, methylthymol blue, pyrocatechol violet, and chromazurol S at the surface of AB-17×8 anionite were studied. The interaction of Cu(II), Pb(II), Zn(II), Hg(II) ions with obtained solid-phase reagents was investigated. The efficiency of the purification of apple juice with such natural adsorbent of Cherkasy deposits (Ukraine) as palygorskite was studied. The optimum conditions of the reactions, quantitative characteristics of the composition and the surface compound stability, the efficiency of the anion exchanger with the immobilized sulphophthalein dyes were determined.
Improvement of the quality and safety of alcohol solutions through their adsorptive refining by natural minerals
(2010) Melnyk, Lyudmila; Mank, Valeriy
This article presents the research results for adsorptive purification of alcoholic solutions from harmful impurities and heavy metals with paligorskite and gydromica. The authors have grounded the mechanism of adsorbing impurities by natural adsorbents.
Improving the purification process for aqueous-alcoholic solutions by shuhgіte
(2012) Melnyk, Lyudmila; Krivorotko, Volodimir
The process of purification of water-alcohol solutions shungita of contaminants that degrade the quality indicators of vodkas. Found that shungite adsorbent natural origin better absorb aldehydes, higher alcohols, methanol. The substantiation of the mechanism of sorption.
Improving the technology of producing food grade dye from red beet juice
(2012) Melnyk, Lyudmila; Sheiko, Tamila; Stroy, A.
Red beet juice is very useful food product, because it contains significant amount of sugars, mineral substances and vitamins. It is also valuable because it is used for producing food grade dye. Nowadays in order to give to food products a color, close to natural coloring of fruits and vegetables, expensive synthetic dyes are used, which might have cancer-inducing effect when being accumulated by human organism. The refore improving the technology for producing food grade dye from red beet juice is remarkably important task. Currently for the purpose of obtaining dye from red beet juice, a part of pectin substances,which make the process of juice concentration more difficult, is removed with the help of expensive enzymatic agents. The authors have suggested using natural carbon-bearing adsorbent shungite to purify red beet juice from pectin substances.
Influence of shungite treatment methods on its absorption properties and on water treatment quality for beverages production
(2019) Oliynyk, Svitlana; Melnyk, Lyudmila; Samchenko, Iryna; Melnyk (Tkachuk), Nataliia; Loginova, Olga; Kisterska, Ludmyla
The use of shungite activated steam treated and modified by nanosilver provides increased efficiency of cleaning of harmful impurities and stabilization of the redox potential of the prepared water. Використання шунгітової активованої пари та модифікованого срібла забезпечує підвищену ефективність очищення шкідливих домішок та стабілізація окислювально-відновного потенціалу підготовленої води.
Methods of recovering schungite’s adsorptive properties after processing red beet juice
(2013) Melnyk, Lyudmila; Melnyk, Zinoviy; Krivorotko, Volodimir
Shungita investigated regeneration techniques for reuse in the production technology of red beet juice. The expediency of using the method of regeneration shungita superheated steam certain parameters.
Microbiological, Physico-Chemical and Organoleptic Parameters of Apple Juice, Processed by Shungite
(2013) Melnyk, Lyudmila; Bessarab, Alexander; Matko, Svetlana
This paper is dedicated to results of studying microbiological, physico-chemical and organoleptical parameters of apple juice processed by shungite. Shungite is a natural mineral which has special structural composition, characterized by the existence of fullerenes and nanotubes. This paper explains the methods applied by the authors to prepare shungite for experimental research, to process apple juice by adsorbent, to determine the quantity of microorganisms in juice after it interacted with shungite, weight percentage of dissolvable dry solids, active acidity and quality parameters. In juice, processed by shungite, bacteria, fungi and yeast were detected. The authors made a comparison between microbial population in juice before and after its interaction with shungite. The paper refers to method under which shungite adsorbs bacteria, fungi and yeasts. The authors presented the results of studying dry solids content, active acidity of apple juice, processed by shungite at various temperatures and conducted assessment of apple juice quality after its interaction with sorbent. Through their research, the authors established rational parameters of apple juice processed by shungite under which the maximum reduction of microbial insemination is reached. The research proved that after apple juice interacts with shungite, its dry solids content and active acidity level remain unchanged. This paper confirmed high quality parameters of apple juice processed by shungite. Taking into account the obtained results, the authors concluded that use of shungite to process apple juice does not require expensive equipment, complex maintenance of the processing procedure, which reduce the cost value of a manufactured product.
Physico-chemical and organkleptic properties of red beet juice purified by shungite
(2013) Melnyk, Lyudmila; Krivorotko, Volodimir; Melnyk, Zinoviy
Fresh red beet juice contains substances which coulddeteriorate its quality. Therefore, juice should be purifiedfirst. The promising method of purifying red beetjuice from unwanted impurities is using carbon-bearingadsorbent - shungite, uniqueness of which can beexplained by existence of fullerenes and nanotubes.The aim of this paper is to study how physico-chemicaland organoleptic properties of red beet juice changewhen processed by shungite. Проведено дослідження по відновленню адсорбційних властивостей природного мінерала шунгіта, який використано для очищення соку столового буряка від пектинових речовин при виробництві харчового барвника. Запропоновано два методи регенерації шунгіта із урахуванням економічної доцільності та наявності необхідного обладнання на консервних заводах. Встановлено раціональні параметри регенерації шунгіта.
Problems of economic development in Ukraine
(2012) Melnyk, Lyudmila; Trygub, Inna
Recovering adsorptive properties of schungite after processing red beet juice
(2013) Melnyk, Lyudmila; Melnyk, Zinoviy
When producing food dye from red beet juice part of impurities, especially pectin substances, is adsorbed by the carbon adsorbent - shungite, containing fullerenes and fullerene nanotubes. During adsorption of red beet juice, surface and pores of shungite are filled with impurities, resulting in decrease of its adsorptive properties.The purpose of the present studies was to select an effective method for regeneration of adsorbent and to establish rational technological parameters of this process.When choosing a method of regeneration, the authors of this paper were motivated by economic feasibility and took into account the availability of necessary equipment at canning factories.
Researching antiseptic properties of shungite when producing red beet juice
(2012) Melnyk, Lyudmila; Melnyk (Tkachuk), Nataliia; Melnyk, Zinoviy
Іnvestigated antiseptic properties Shung in the production of table beet juice. The efficiency of absorption of harmful microorganisms from juice Shung.
Researching of microbiological parameters of apple juice, processed by shungite
(2013) Melnyk, Lyudmila; Matko, Svetlana; Shevchenko, Oleksandr
When processing apple juice by shungite, simultaneously with the adsorption of harmful microorganisms,colloidal substances are also adsorbed, and that in turn promotes clarification of juice.This work proves the expediency of adsorptive processing of apple juice by shungite with fraction of 1 ... 3mm. Rational parameters of apple juice processing, under which the maximum reduction of microbial insemination is reached, are the following: shungite concentration of -1.5 ... 2% mass., temperature - 60°C,duration - 60 min.
Using paligorskit for purifying the aqueous-alcoholic solutions
(2004) Mank, Valeriy; Melnyk, Lyudmila
Investigated the adsorption properties of palygorskite in the purification of water-alcohol solutions in vacuum. The efficiency of absorption of this natural mineral aldehydes, esters, higher alcohols under vacuum. Palygorskite proved reuse by its regeneration with superheated steam or carbon dioxide.
Utilization of shungite forimproving quality and safety of juices
(2010) Melnyk, Lyudmila; Sheiko, Tamila
Found that shungite has effective adsorption properties relative to nitrate ions from beet juice. Shungit also absorbs ammonium ions in drinking water. An illustration of the mechanism of adsorption processes in the "solid - liquid".
Water-alcohol adsorbing cleaning out of higher alcohols by shungite
(2014) Melnyk, Lyudmila; Turchun, Oleg; Melnyk (Tkachuk), Nataliia; Kuts, Anatoly; Melnyk, Zinoviy
The aim of the research work is to increase the quality and safety of high spirits solutions at the expense of using natural adsorbent shungite.