The ecology of environment nowadays

On the Surface Properties of Carbon-Silica Adsorbents (Carbosils) Modified in the Process

of Hydrothermal Treatment with H2O2

R. Leboda1, B. Charmas1, F. Villieras2, J. Skubiszewska-Zięba1, A. Gierak1

1Faculty of Chemistry, Maria Curie - Skłodowska University

20-031 Lublin, Poland

2Laboratoire Environnement et Mineralurgie, UMR 7569,

CNRS-INPL, Ecole Nat. Sup. Geologie,

15 avenue du Charmois, BP40, 54501 Vandoeuvre les Nancy, France

Hydrothermal modification (HTM) is one of the most effe Continue Reading »

NEW SORBENTS BASED ON MODIFIED SILICA

FOR TREATMENT OF NATURAL WATER AND SEWAGE

V. A. Kalibabchuk, T. D. Reva, V. N. Zaitsev

National Medical University and T. Shevchenko University Kyiv Ukraine

The accumulations of environmentally toxic elements in plants require the development of reliable methods for the determination of micro amounts of these elements on the base of other major impurities. The methods for the determination should be simples and reliable. Adsorption on the solid materials with chemically modified surface for the selective pre-concentration fits those requirements, which unite i Continue Reading »

LOCALIZATION OF V2O5 PHASE IN SILICA GELS

M. S. Mel’gunov1, V. B. Fenelonov1, R. Leboda2, B. Charmas2

1Boreskov Institute of Catalysis,

Prospekt Akad. Lavrentieva 5, 630090, Novosibirsk,

Russian Federation, e-mail: max@catalysis.nsk.su

2Faculty of Chemistry, Maria Curie-Skladowska University,

20031, Lublin, Poland

Recently, а new textural approach to study localization of carbon in various porous supports was offered [1-4]. The considered approach is based on study of unspecific adsorption interactions of different fluids with all components of tested composite Continue Reading »

EXTENSION OF THE APPLICABILITY OF JÄNTTI`S METHOD FOR FAST CALCULATION OF ADSORPTION DATA

C. H. Massen1, J. A. Poulis1, E. Robens2, P. Staszczuk3

1Faculty of Technical Physics, Technical University Eindhoven,

Postbus 513, NL - 5600 MB Eindhoven, The Netherlands

2Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, D-55099 Mainz, Germany

3Faculty of Chemistry, Department of Physicochemistry of Solid Surface, Maria Curie-Sklodowska University,

Pl.M.Curie-Skłodowskiej 3, PL-20031 Lublin, Poland

In 1972 Continue Reading »

Superficial properties of calcite: adsorption model with the orbital control

N. V. Nikolenko

Ukrainian State Chemical Technology University, Gagarin Av., 8, Dniepropetrovsk 49005,Ukraine

The forecasting of surface activity of substance is most perspective from comparison of adsorbate and adsorbent electronic structure. From this point of view chemical nature of substance can be considered as the minor factors. An orbitals symmetry, degree of orbital overlapping, MO energy and electronic density will be general parameters determining result of superficial interaction [1].

In the present wo Continue Reading »

H+-Mg2+ AND H+-Ca2+ EXCHANGE ONTO CARBOXYLIC IONITES IN TERMS OF THE EXCHANGE EQUILIBRIUM THEORY

A. Mamchenko, Y. Valuiskaya, H. Klimova

Dumansky Institute of Colloid and Water Chemistry of Ukrainian National Academy of Sciences, Kiev, Ukraine

Magnesium and calcium ion sorption by H-type carboxylic ionite Lewatit CNP 80 while as the magnesium and calcium sulphate concentration in the “outer” solution was varied by two orders was considered from point of view of the ion exchange equilibrium theory. The practical significance of investigation of this sistem is defined first of all by widely use of H-type car Continue Reading »