Agata Lilia Skwarczynska - Wojsa

Rzeszów University of Technology · Department of Water Purification and Protection

One of the major applications of chitosan is based on its ability to bind ions. In essence, the presence of active hydroxyl groups (-OH) and amino groups (-NH2), chitosan coordinates easily e.g. with transition metal ions, meanwhile it has a weak adsorption properties towards to alkaline earth metals. In this paper, a batch adsorption system was ap...

The quantitative analysis of biofilm can be used not only to assess the microbiological stability of tap water but also on its basis can assess: the degree of colonization of materials by bacterial cells, the rate of biofilm formation on the surfaces of pipes and determine their composition and number. The article presents the results of research o...

Rainwater has been found to be a valuable source of drinking water in Europe, especially in such crisis situations as those caused by contamination of water uptake into water supply systems, large-scale floods or terrorist attacks (e.g., biological weapons). The microbiological quality of water plays a significant role, which is directly related to...

Crenotherapy is a natural treatment and health protection method, thus using natural mineral water are gaining popularity as an alternative to pharmacotherapy or as additional support in many types of diseases. The aim of this study was to determine the occurrence of germanium (Ge) in mineral non-geothermal waters from Low Beskid area, Poland. The...

Introducing collagen the basic ingredient of bone tissue into the structure of chitosan gels that are formed at physiological body temperature, aims to create so-called biomimetic structures, which are close in composition to the natural composition of bone tissue. The aim of this study was to determine the influence of mineralization on the struct...

In this paper the properties of thermosensitive chitosan hydrogels, formulated with chitosan chloride with β-glycerophosphate disodium salt hydrate and chitosan chloride with β-glycerophosphate disodium salt hydrate enriched with calcium glycerophosphate, are presented. The study focused on the determination of the hydrogel structure after conditio...

In this article, the properties of thermosensitive chitosan hydrogels (structural and biological) prepared using chitosan chloride and β‐glycerophosphate are presented. The porous structure of the gels was observed with a scanning electron microscopy (SEM). Rheological and other structural and morphological investigations were carried out by infrar...

Introducing collagen, which is basic ingredient of bone tissue, into the structure of chitosan gels which are formed at the physiological body temperature, is aimed at creating the so-called biomimetic structures, i.e. close in their composition to the natural composition of bone tissue. Within the research the influence of collagen on structural p...

In this paper the properties of thermosensitive chitosan hydrogels prepared with the use of chitosan salz (chloride and lactate) and β-glycerophosphate are presented. Biological studies were carried out on thermogels without conditioning in water and on thermogels after 24 h conditioning in water. Experiments were conducted on a reference cell line...

Thermosensitive injectable hydrogels based on chitosan neutralized with sodium beta-glycerophosphate (Na-β-GP) have been studied as biomaterials for drug delivery and tissue regeneration. Magnesium (Mg) has been reported to stimulate adhesion and proliferation of bone forming cells. With the aim of improving the suitability of the aforementioned ch...

In these studies, an attempt has been made to explain the mechanism of gel formation. The studies were carried out to develop the mechanism of chitosan gel formation in the presence of glycerol phosphate GP, taking into account suggestions presented in the literature. The analysis was carried out on the basis of a change in the gel structure after...

We examined the ability of hydrogel chitosan beads to adsorb Cu2+, with adsorption in the presence of SO42- co-ions. Studies were carried out with initial pH 3.5 and 5. The process rate was defined and on this basis isotherms were determined. The process rates were described by pseudo first-or second-order reaction equations; and equilibrium by Lan...