Water and water purification technologies

Scientific and technical news

REMOVING OF SUBSTANCES THAT INFLUENCE THE HORMONAL SYSTEM OF LIVING ORGANISMS FROM THE WASTE WATERS USING TRADITIONAL WATER-TREATMENT METHODS

R. Mesarosh1, S. Barany1, 2

1 – University of Miskolc, Institute of Сhemistry, 3515 Miskolc-Egyetemváros, Hungary

2 – Ferenc Rákóczi II Transcarpathian Hungarian Institute,Beregovo,Ukraine

e-mail: sbarany@uni-miskolc.hu

The article obtains a broad literature review on issue of drinking and industrial waste waters treatment. Substances that strongly impact on the hormonal system of living organisms (Endocrine Disrupting Compounds or EDC-type substances) are mostly in a focus. Composition/structure of the most typical substances, affecting hormonal balance of man and their classification are given. The paths of getting the indicated matters into environment are described. The short analysis of difficulties of analytical determination of EDC-substances are given. The basic methods of this kind pollutants removing from different types of water are critically considered: coagulation, adsorption on activated carbon, oxidization, biological and membrane methods, ozone and chlorine. The article contains 25 references.

Keywords: substances, hormonal system, living organisms, composition and classification, sewages, treatment, coagulation, adsorption, activated carbon, destruction, ozone, chlorine, biological treatment, membrane methods. 

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19.07.2013 at 3:22 pm

ADSORPTION PROPERTIES OF NANOSTRUCTURED ALUMINUM OXIDE OBTAINED BY PHYSICAL VAPOR DEPOSITION

L. Krushinska1, Y. Stelmax1, I. Andrusishina2, I. Golub2, V. Gorchev3

1- E.O. Paton Electric Welding Institute of NAS of Ukraine, Kyiv, Ukraine

2 – Institute of Occupational Health of AMS of Ukraine, Kyiv, Ukraine

3 – Palladin Institute of Biochemistry of NAS of Ukraine, Kyiv, Ukraine

e-mail: krushinskaya@paton-icebt.kiev.ua, irina_andrei@voliacable.com

Sorption properties of nanostructured powders of aluminum oxide, obtained by EB PVD at condensation temperatures 100-650° С, with respect to positively charged metal ions and negatively charged ions of non-metals with different ionic and atomic radius were studied.

A comparative study of the adsorption capacity of nanostructured aluminum oxide, depending on the structural characteristics of the obtained materials revealed that it adsorbs predominantly positively charged metal ions. It appears that high sorption capacity of the nano-alumina takes place with ion or atom radiuses increased. However, the adsorption of anions does not depend on the structure of aluminum oxide.

It is revealed that nanostructured alumina can adsorb and retain on its surface metal and nonmetal ions, which makes it a promising material for water purification.

Key words: nanostructured powders of aluminum oxide, adsorption, АЕS-IСP analysis, рН, radius of atoms and ions of metals and nonmetals.

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17.02.2012 at 11:47 am