Category Archive for "Year 2012 Issue 12"

Fertilizing in containers with exploiting different forms of gardening

Fertilizing in containers with exploiting different forms of gardening LESZCZUK T. Please cite as: CHEMIK 2012, 66, 12, 1360-1365 Fertilizing is one of the most important agro-technological treatments in the container cultivation of the gardening materials of the ornamentals. One should apply every of fertilizers in closely determined dose, adapted for needs of nutritional plants. At the work results were presented, of application of fertilizers into containers with the applicator of the Polish production Sagittarius of the company Quasar. They were carrying out research on...

Removal of NI(II) ion in the presence of DS form waters and waste waters

Removal of NI(II) ion in the presence of DS form waters and waste waters GĘCA M., HUBICKI Z Please cite as: CHEMIK 2012, 66, 12, 1352-1359 The paper presents the studies of sorption of the Ni(II) ions complexes with tetrasodium salt of polyaspartic acid (Baypure DS 100) as a complexing agent on the ion exchangers Lewatit MonoPlus M800 and Lewatit MK-51. The sorption process was carried out by the static method depending on the phase contact time, pH, temperature and concentration of Ni(II) ions...

Modern research methods for determining structures of intradiol dioxygenases

Modern research methods for determining structures of intradiol dioxygenases WOJCIESZYŃSKA D., HUPERT-KOCUREK K., SITNIK M., GUZIK U. Please cite as: CHEMIK 2012, 66, 12, 1346-1351 Intradiol dioxygenases are essential enzymes of ortho pathway involved in the decomposition of aromatic compounds. Enzymes are grouped into three classes on account of a type of the intermediate whose ring they cleave. Nowadays, the application of such modern research methods as X-ray crystallography, mass spectrometry, electron paramagnetic resonance spectroscopy, and X-ray spectroscopy creates possibilities for the thorough understanding of their spatial...

Polyphosphoric acid (PPA) in road asphalts modification

Polyphosphoric acid (PPA) in road asphalts modification JAROSZEK H. Please cite as: CHEMIK 2012, 66, 12, 1340-1345 Recently increasing traffic volume and loads are the reason for the increase of requirements for road surfaces. Longer lifetime of pavements can be achieved by modification of asphalt binder by modifiers, mostly polymers. Polyphosphoric acid (PPA), alone or in a conjunction with a polymer, can significantly improve rheological properties of bitumen. An effect of such modification strongly depends on amount of PPA added and the nature of...

The application of WD-XRF in determination of low sulfur contents in industrial catalysts.

The application of WD-XRF in determination of low sulfur contents in industrial catalysts. RYMARCZYK K., KONDRACKA M., KLUCZEWSKACWALINA J., GÓRECKA B. Please cite as: CHEMIK 2012, 66, 12, 1332-1339 The contribution describes the possibilities of utilization of the WD-XRF technique in the chemical composition analysis of industrial catalysts. Two catalysts, namely an iron catalyst for the high temperature shift process (HTS) and a catalyst based on active aluminum oxide for alcohol dehydration processes have been investigated. Based on the results obtained, the suitability of the...

Physicochemical analysis of self-heating of glass-epoxy composites cured by novolac

Physicochemical analysis of self-heating of glass-epoxy composites cured by novolac KATUNIN A., KRUKIEWICZ K. Please cite as: CHEMIK 2012, 66, 12, 1326-1331 Following the interdisciplinary of the investigated phenomenon of self-heating it is necessary to analyze the processes of structural modifications occurring in composites subjected to cyclic loading both from mechanical and chemical point of view for better understanding its degradation mechanisms. The paper presents experimental research results and analysis of structural degradation of polymer composites during occurrence of self-heating effect and thermal fatigue. Some characteristic...

Advanced photooxidation of surfactants in wastewater

Advanced photooxidation of surfactants in wastewater CZECH B. Please cite as: CHEMIK 2012, 66, 12, 1314-1325 Photocatalytic methods were applied to remove Triton X-100 and wash-up liquid from wastewater. For the studies Al2O3 supported TiO2 photocatalysts were used. They were modified with Cu or Zn using Classical or Double Impregnation Method. Photocatalytic materials were characterised by N2 adsorption-desorption, XRF, XRD, SEM-EDX, Raman and UV-Vis spectroscopy. All the catalysts were efficient in the removal of surfactants. The addition of H2O2 (0.01vol.%) does not deepen the removal...

Discoloration of azo dyes, Schäffer acid and R salt derivatives, by microorganisms of activated sludge

Discoloration of azo dyes, Schäffer acid and R salt derivatives, by microorganisms of activated sludge JĘDRZEJCZAK M., KAMIŃSKA A., WOJCIECHOWSKI K., GÓRECKI T. Please cite as: CHEMIK 2012, 66, 12, 1308-1313 In this study the ability of activated sludge to perform the discoloration of solutions of azo dyes, Schäffer acid and R salt derivatives, was investigated. It was found that the efficiency of dye removal from solution decreased when an additional sulfonic group was introduced to the dye molecule. Modification of dye by introduction...

Azo dyes ? biological activity and synthetic strategy

Azo dyes ? biological activity and synthetic strategy WĘGLARZ-TOMCZAK E., GÓRECKI Ł. Please cite as: CHEMIK 2012, 66, 12, xx Azo dyes are the largest and the most popular group of dyes demonstrating the full palette of colors. These compounds, containing ?N=N? group as a characteristic chromophore, are mainly obtained in diazotization and coupling reaction. Nowadays, they constitute around 60% of all dyes used in food and textile industry. Besides coloring properties, their biological activities are known, being a risk factor for humans and...

Strategic domains in the R&D activities of the (BIONANO- TECH) Institute in the aspect of cooperation between science and business

Strategic domains in the R&D activities of the (BIONANO- TECH) Institute in the aspect of cooperation between science and business CIECHAŃSKA D., NIEKRASZEWICZ A. Please cite as: CHEMIK 2012, 66, 12, 1286-1293 Presented are outlines of the R&D policy of the Institute of Biopolymers and Chemical Fibres in the light of future activities directed toward the enhancement of cooperation between R&Dand business units. The Institute?s strategic BIO-NANO-TECHNO domain is highlighted. Keywords: R&D strategy, models of science-business cooperation, commercialization of investigation results Read more: Read more

Category Archives: Year 2012 Issue 12