Dorota Kołodyńska

• Professor
• Maria Curie-Skłodowska University

The selection of cross-linking techniques is essential for the development of the alginate matrix. In this study, we investigated porous sodium alginate matrices (ALG1@in, ALG3@in, ALG5@in) synthesized by internal gelation and further functionalized with polyphosphate (PP) at concentrations of 5% and 15% (ALG3@inPP5, ALG3@inPP15). Extensive charact...

ABSTRACT The development of new functionalized adsorbents in the form of polymeric microspheres, based on triethoxyvinylsilane (TEVS) and ethylene glycol dimethacrylate (EGDMA), has been achieved. These adsorbents were created by incorporating coumarin additives, synthesized in an environmentally friendly manner, into the TEVS-EGDMA polymer matrix....

Insect farming generates a new type of chitinous waste in the form of dead specimens that have died of natural causes and insect moults (puparia), particularly large amounts of which are generated during the rearing of holometabolous insects. Following the circular economy paradigm, we treated waste in the form of puparia and dead adults of H. illu...

The article describes the history, origin and development of inorganic chemistry at the Marie Curie-Skłodowska University in Lublin. The profiles of the first heads of the Department of Inorganic Chemistry and the history, research topics and didactic and organisational achievements of the unit are presented.

Alginates are salts of alginic acid derived mainly from sea algae of the genus brown algae. They are also synthesized by some bacteria. They belong to negatively charged polysaccharides exhibiting some rheological properties. High plasticity and the ability to modify the structure are the reasons for their application in numerous industries. Moreov...

Nowadays, there is a great interest in efficient adsorbent development due to the recent demand for lanthanides, which are widely used in high‐tech technology. Alginates, owing to their natural occurrence, gel formation capability, and safety, could be promising feasible adsorbents for lanthanide removal. This study proposes the alginate‐cellulose...

The superabsorbents’ application as materials for the preparation of modern mineral fertilizers of controlled activity is presented. Under the static conditions, the commercial acrylic-based Agro® Hydrogel was used as a sorbent for Cu(II), Fe(III), Mn(II), and Zn(II) ions in the presence of three biodegradable complexing agents of the new generatio...

Deadwood plays an important role in forest ecology; its degradation and, therefore, carbon assimilation is carried out by fungi and bacteria. To quantify the abundance and distribution of microbial taxa inhabiting dead spruce logs fallen over a span of 50 years and the soil beneath, we used taxonomic profiling with NGS sequencing of hypervariable D...

Synthesis, sorption–desorption studies and physicochemical analysis of novel hydroxyapatite modified biochars were performed. The hydroxyapatite used for the modification originated from the four sources: egg shells, boiler stone, chalk and marl. The obtained sorbents were used for vanadium ions removal from the aqueous solutions. It is dangerous i...

Currently, there is an urgent need to remediate heavy metals (HMs) and high alkalinity in the washing solution of fly ash (FA). This study investigated the remediation with simulated exhaust gases of two CO2 partial pressure and revealed the removal efficiency of target pollutants, mainly including Pb ions. The results verify that under the preferr...

The paper investigated the adsorption of the packed-bed column with the alginate-based adsorbents (ALG-based adsorbents) such as alginate-biochar, alginate-clinoptilolite, alginate-lignin, and alginate-cellulose for La(III) ions’ removal. Fixed-bed adsorption studies with various alginate-based adsorbents were carried out and compared to the La(III...

The recycling of REEs from the end of life (EoL) products, such as nickel metal hydride batteries (NiMH), offers great opportunities for their supply in Europe. In the presented paper, the application of ‘green’ extractants such as citric (CA), metatartaric (TA), and ethylenediaminedisuccinic acid (EDDS) (also with H2O2 addition) for the recovery o...

Phosphate rocks (PRs) play a crucial role in ensuring the availability of phosphorous for the world’s food needs. PRs are used to manufacture phosphoric acid in the wet process as well as P-fertilizers. The chemical and mineralogical compositions of PRs from Djebel Onk (Algeria), Khneifiss (Syria), Negev (Israel), Bou Craa (Morocco), and Khouribga...

This paper estimates the suitability of the strongly basic anion exchangers, Dowex PSR2 and Dowex PSR3, as sorbents of nickel ions in aqueous solutions. These actions are aimed at searching for new solutions due to the growing discharge of nickel into wastewaters, primarily due to its addition to steel. The nickel sorption experiments were conducte...

This study concerns the fabrication of CTAB- and N,N-dimethyltetradecylamine-grafted zirconia and evaluation of their ability to adsorb vanadium ions. The effectiveness of ZrO2 functionalization and the different nature of the modifiers used were confirmed by differences in the porosity (ZrO2: SBET = 347 m²/g; ZrO2-CTAB: SBET = 375 m²/g, ZrO2–NH⁺:...

The chitosan-modified biochars BC-CS 1-1, BC-CS 2-1 and BC-CS 4-1 were subjected to the synthetic application of biochar from agriculture waste and chitosan for the adsorption of Cu(II), Cd(II), Zn(II), Co(II) and Pb(II) ions from aqueous media. The results displayed a heterogeneous, well-developed surface. Additionally, the surface functional grou...

The paper presents the results of the studies on the vanadium (V) ions removal from the aqueous solutions in the adsorption process on biochars from different biomass types (cow manure BC1, wet distiller grains BC2, spent mushroom substrates BC3). The adsorbents were characterized by means of the SEM-EDS, FTIR, XRD and XPS techniques. The influence...

Development of bone scaffolds that are nontoxic to eukaryotic cells, while revealing bactericidal activity still remains a huge challenge for the scientific community. It should be noted that only bacteriostatic (the ability of the biomaterial to inhibit the growth of bacteria) and bactericidal (the ability to kill >99.9 % bacteria) activities have...

Based on the 2020 list of raw materials for the EU, there are 30 critical minerals on the critical raw materials list, among which the rare earth elements group is placed. This study demonstrates a viable approach to the increasing possibility of the critical materials recovery through biosorption. The environmentally friendly biosorbents were prep...

The complexes of europium(III) ions in binary and ternary systems with α-hydroxy acids and biogenic amine - spermine were investigated. Studies have been performed in aqueous solution using the potentiometric method with computer analysis of the data. Analysis of the equilibrium constants of the reactions and spectroscopic data have allowed us to d...

The iron oxide ion exchanger Ferrix A33E was successfully modified with cerium(III) ions to obtain Ferrix A33E-Ce(III) providing much better sorption properties in relation to the As(V) species. The new material has been characterized using a number of techniques including scanning electron microscopy SEM, nitrogen adsorption/desorption isotherms,...

In this study the effects of citric acid (CA) as a biodegradable complexing agent in the sorption process of La(III), Nd(III) and Ho(III) ions (single component systems) on various types of ion exchangers (chelating ion exchangers, cation exchanger, strongly and weakly basic polystyrene and polyacrylate anion exchangers) were investigated. The effe...

The adsorption capacities of ion exchangers with N-methyl-D-glucamine (NMDG) groups (Amberlite IRA 743, Lewatit MK 51, Purolite S110 and Purolite S108) relative to V(V) ions were tested in a batch system, taking into account the influence of various parameters, such as the adsorbent mass (0.05–0.20 g), phase contact time (1–240 min), initial concen...

The recent increase in interest in rare earth elements is due to their increasing use in many areas of life. However, along with their increasing popularity, the problem of their natural resources availability arises. In this study, an alginate–lignin composite (ALG-L) was fabricated and tested for adsorptive abilities of the rare earth elements (L...

In this study the iron oxide ion exchanger with the quaternary ammonium groups, Ferrix A33E was modified with neodymium (III) ions in order to obtain the new material Ferrix A33E-Nd(III) characterized by greater sorption efficiency of arsenate(V) ions. A33E-Nd(III) was described by various techniques including scanning electron microscopy SEM, nitr...

The broadening and changes in optical parameters of TiO 2 /SiO 2 transition layers irradiated with Xe + ions of energies 100, 150, 200, and 250 keV have been investigated using the Rutherford Backscattering Spectrometry (RBS) and Spectroscopic Ellipsometry (SE) methods. We observed that a rise in atomic mixing at the TiO 2 /SiO 2 interface increase...

The efficiency of azo dye Acid Red 18 (AR18) and Cu(II) ions simultaneous removal from an aqueous solution on NaP1CS and NaP1H was investigated, taking into account the effect of the phase contact time, pH, initial concentration, temperature, and interfering ions presence. Zeolite denoted as NaP1CS was modified by chitosan (CS) and zeolite denoted...

Ion exchange technique as the reversible exchange of ions between the substrate and the surrounding medium can be an effective way of removing traces of ion impurities from the waters and wastewaters and obtaining a product of ultrapure quality. Therefore, it can be used in analytical chemistry, hydrometallurgy, purification and separation of metal...

Three acrylic-based superabsorbents—TerraHydrogel®Aqua (THA), Zeba®Hydrogel (ZH) and Agro®Hydrogel (AH) were used to investigate the influence of chemical conditions on kinetic and adsorption behavior towards metal ions in the presence of a chelating agent of a new generation called ethylenediamine-N,N′-disuccinic acid (EDDS). The effects of releva...

In this study, the commercially available iron oxide sorbent with quaternary ammonium groups was modified with lanthanum(III) ions for removing arsenate(V) from water. Several analyses, such as SEM, N2 adsorption-desorption method, FTIR and XPS, were employed to characterize the ion exchanger and explore the adsorption of As(V) ions on Ferrix A33E-...

A new type of functional lignin-based spherical particles (L-CTAB) prepared with the use of hexadecyltrimethylammonium bromide (CTAB) was applied as an effective biosorbent for removing vanadium(V) ions. The porous structure, characteristic functional groups, electrokinetic stability, morphology and size of the L-CTAB particles were examined. The c...

Pure compounds extracted and purified from medical plants are crucial for preparation of the herbal products applied in many countries as drugs for the treatment of diseases all over the world. Such products should be free from toxic heavy metals; therefore, their elimination or removal in all steps of production is very important. Hence, the purpo...

Heavy metals are widely distributed in the environment due to the natural processes and anthropogenic human activities. Their migration into no contaminated areas contributing towards pollution of the ecosystems e.g. soils, plants, water and air. It is recognized that heavy metals due to their toxicity, long persistence in nature can accumulate in...

Polymer hydrogels with lignin in the form of microspheres have been synthesized and their properties were evaluated. Prior to the polymerization, hardwood lignin (Eucalyptus grandis) was modified with methacryloyl chloride, and unmodified lignin (L-N) and its methacrylic derivative (L-M) were polymerized with 2-hydroxyethyl methacrylate (HEMA) and...

The aim of the presented research was to investigate the mechanism of sorption of Cu(II) ions on the commercially available Purolite S 940 and Purolite S 950 chelating ion exchangers with the aminophosphonic functional groups. In order to understand better the sorption mechanism, the beads were cut with an ultramicrotome before and after the Cu(II)...

The possibility of application of chitosan-modified zeolite as sorbent for Cu(II), Zn(II), Mn(II), and Fe(III) ions and their mixtures in the presence of N-(1,2-dicarboxyethyl)-D,L-aspartic acid, IDHA) under different experimental conditions were investigated. Chitosan-modified zeolite belongs to the group of biodegradable complexing agents used in...

Increasing the number of applications of rare earth elements (REEs) has led to increased release of these metals into the environment. Removal of REEs from e-wastes is very important considering the increasing demand for these elements, the limited resource availability of them as well as the significant environmental issues. In this present study,...

The broadening and optical parameters of TiO2/SiO2 transition layers depending on the ion energy have been investigated using the Rutherford Backscattering Spectrometry (RBS) and Ellipstrometry Spectroscopy (ES) methods. The TiO2/SiO2 samples were irradiated by Xe+ ions with energies of 100, 150, 200 and 250 keV. The depth profiles of the elements...

The recovery of La(III) and Ni(II) ions by a macroporous cation exchanger in sodium form (Lewatit Monoplus SP112) has been studied in batch experiments under varying HNO3 concentrations (0.2–2.0 mol/dm³), La(III) and Ni(II) concentrations (25–200 mg/dm³), phase contact time (1–360 min), temperature (293–333 K), and resin mass (0.1–0.5 g). The exper...

A new commercial sorbent ADSORBSIA™ As500 was used for As(V) and Cr(VI) removal as well as La(III) and Nd(III) recovery from aqueous solutions. The physicochemical properties were characterized by nitrogen adsorption/desorption analyses, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD)....

Modification of a commercial iron oxide ion exchanger (Arsen Xnp) was carried out to enhance the removal of arsenic(V) ions. The modification consisted of the adsorption of lanthanum(III) ions on the Arsen Xnp surface. After adsorption, the material was dried at 313 K to obtain the modified ion exchanger Arsen Xnp-La(III). The modification process...

A series of new synthetic spherical carbonaceous sorbents has been prepared by carbonization and physical activation of strongly acidic ion exchange resin - Wofatit RH. The carbonaceous materials were prepared using two different variants of thermal treatment - microwave and conventional heating. The samples obtained were characterized using variou...

Three-dimensional macroporous scaffolds are commonly used in bone tissue engineering applications since they provide sufficient space for cell migration and proliferation, facilitating bone ingrowth and implant vascularisation. The aim of this work was to combine two simple methods, freeze-drying and gas-foaming, in order to fabricate highly macrop...

Nowadays, the contamination of water with phenol is a serious environmental problem. This compound occurs very often with heavy metal ions which makes purification of water even more difficult. This article presents the problem of the removal of phenol from aqueous solutions in the presence of Cu(II) ions on synthetic zeolite NaP1 and zeolite NaP1...

The present study deals with the potential application of Purolite S957 and Diphonix Resin® for the removal of rare earth elements from aqueous liquors as a result of the extraction of spent Ni-MH batteries in the presence of citric acid. The effects of the metal ion and the citric acid ratio, pH, ion exchanger dose, contact time, initial concentra...

Nω-nitro-L-arginine methyl ester (L-NAME), an inhibitor of nitric oxide (NO) biosynthesis, results in hypertension and liver injury. This study aimed at investigating the changes of liver lipometabonomics and exploring the underlying mechanisms of liver injury in the L-NAME-treated rats. The male Sprague-Dawley (SD) rats were treated with L-NAME (4...

In this article, the short description of the traditional and green complexing (chelating) agents (EDTA, NTA, IMDA, HEDTA, DCTA, and DTPA as well as IDS, DS, EDDS, GLDA, and MGDA), their physicochemical properties, manufacturing process, as well as application in cleaning compounds, pulp and paper, agrochemical, textile, food, cosmetics, pharmaceut...

Adsorption effectiveness of Amberlite 200C Na, Amberlite 200C H and Dowex M 4195 towards La(III), Ce(III) and Nd(III) was carried out. The effects of phase contact time, initial metal concentration and temperature were studied to evaluate the kinetic, equilibrium and thermodynamic parameters for the sorption process. The structure and physicochemic...

In this study, Diphonix resin containing sulfonic, diphosphonic and carboxylic groups was used to evaluate the adsorption capacity of metal ions contained in the nickel-metal hydride batteries (Ni-MH). This type of ion exchanger can be considered as the multifunctional material having great affinity to many metal ions. Using Diphonix resin adsorpti...

Multistage modification of commercially available styrene with divinylbenzene (St-DVB) microspheres is presented. The new type of modification introducing very attractive thiol (–SH) groups on the surface of polymeric matrices was made. In order to obtain thiol derivatives, the parent St-DVB microspheres were treated by H2SO4 with addition of oleum...

The main aim of investigations was to study adsorption effectiveness of the ions contained in nickel-metal hydride cells on the commercial adsorbent Pyrolox ® as well as estimation of possible application of the adsorbent for recovery of metal ions from real solutions after cells leaching. Pyrolox ® was applied as adsorbents for the removal of La(I...

The detoxification of municipal solid waste incinerator (MSWI) fly ash dioxins urgently requires an effective treatment technology. In this study, we adopted a single-mode microwave (MW)-based pyrolysis to treat MSWI fly ash under N 2 atmosphere and further elucidated the main influencing factors, including the chemical inhibitor, for dioxin contro...

Rare earth elements (REEs) belong to the group of strategic elements. Their separation together with the spectral, magnetic and coordinative properties of REEs is essential for their further applications. However, separation of individual REEs on an industrial scale is very complex. Obtaining REEs of high purity requires purification of their conce...

The novel organic-inorganic biohybrid composite adsorbent was synthesized based on nanosized silica-titania modified with alginate within the development of effective adsorbent for heavy metal ions. Effects of metal species Cu(II), Zn(II), Cd(II), and Pb(II); concentrations; pH; temperature; and adsorption onto titania-coated silica (ST20) initial...

In order to investigate diffusion models and adsorption mechanism of polymeric ligand exchangers (PLE) for the removal of perchlorate from tap water Lewatit MonoPlus TP 220-Cu, Lewatit MonoPlus TP 220-CuEDDS, Dowex 4195-Cu and M 4195-CuEDDS were prepared and compared with commercial Lewatit TP 220 and Dowex M 4195. Based on the adsorption experimen...

This paper presents the possibility of using alginates as biosorbents for the removal of representative of the lanthanide group La(III) ions and heavy metals Cd(II) and Cu(II) ions from aqueous solutions. The calcium alginate in the form of beads obtained by the drop method was used. Biosorption was performed by the static method, studying the effe...

In this paper, we studied the dielectric parameters, such as the real and imaginary parts of the dielectric constant, dielectric loss angles, in the paraelectric phase in the temperature range of 300-650K. Based on the dielectric parameters in the frequency range 100-106 Hz, the role of free ions in the relaxation process at f <10 kHz was determine...

Chitosan hydrogel beads (CHBs) have displayed prominent advantages as adsorbents, including easy separation after adsorption. To further increase their adsorption capacity, CHBs were modified with malic acid and further freeze-dried. The structural characteristics of malic acid modified CHBs (mCHBs) were explored along with the factors primarily in...

Sorption of lanthanum(III), cerium(III) and neodymium(III) ions from the aqueous solutions of mixtures through adsorption on the biochar composites was investigated as a function of sorbent mass, pH, phase contact time and initial concentration of solutions at 295 K. The maximum removal of lanthanide ions takes place under the following conditions:...

Lately, there have been published numerous papers on application of biochar for removal of impurities from aqueous solutions. This is possible due to its favourable physicochemical properties such as large specific surface area, the presence of active functional groups and porous structure. Moreover, suitable conditions of the process (temperature,...

The studies were carried out using the semi-insulating SI semiconductor. The surfaces (100) of GaAs were irradiated by the noble gases Ne⁺ and Kr⁺ ions. The fluences were in the range from 1 × 10¹³ cm⁻² to 3 × 10¹⁶ cm⁻². The dielectric functions were obtained for the virgin and implanted semiconductors. The investigations were carried out for the n...

The surfaces of (100) GaAs were irradiated with In⁺ ions. The implanted samples were isobaric annealed at 800 °C and then of dielectric function, the surface atomic concentrations of atoms and also the chemical composition of the near surface layers in these implanted semiconductor samples were obtained. The following investigation methods were use...

Modification of the silica surface leads to the change in chemical composition of the surface which can be modified either by physical treatment (thermal or hydrothermal) or by chemical treatment. Such modifications significantly affect the adsorption properties of the materials and especially mechanical stability and water insolubility, increasing...

The paper presents the use of Pyrolox™ containing manganese nano oxides used for the removal of Cu(II), Zn(II), Cd(II), and Pb(II) as well as U(VI) ions. Their concentrations were analyzed using the atomic absorption spectrometer SpectrAA 240 FS (Varian) as well as UV-vis method. For this purpose the static kinetic and equilibrium studies were carr...

In the original publication [1] the author name L. V. Pylychuk had a spelling error and one sentence under paragraph “Effect of Initial pH” consisted an error. Incorrect name: L. V. Pylypchuk Correct name: L. V. Pylychuk Wrong sentence: Additionally, based on the speciation diagram (Fig. 2) for the pH values 5.0 and 6.0 Cd2+, Cd(II) was predominant...

Fly ash (FA) and zeolite Na-A obtained on it were modified by chitosan (CS) and investigated for heavy metal ions removal from aqueous solutions. FA–CS and Na-A–CS were characterized by the X-ray fluorescence method, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), nitrogen adsorption/desorption m...

Three types of magnetic biochars (MBC1, MBC2, and MBC3) were synthesized from biochar using NaBH4 as a reducing agent of Fe(II) to Fe(0) to remove copper(II) ions from different wastewaters. Based on the research it was found that removal of copper(II) ions by MBC1 occurs with a yield of 99.8% for the concentration 50 mg/dm³ and decreases to 71.7%...

In the paper the synthesis and comprehensive physicochemical characterization of a new group of adsorbents containing inorganic oxides and functional biopolymers from the lignocellulose group o such as TiO2/lignin, TiO2-SiO2/lignin and MgO-SiO2/lignin are presented. The obtained materials were evaluated taking into account their physicochemical pro...

Magnetic biochar nanocomposites were obtained by modification of biochar by zero-valent iron. The article provides information on the impact of contact time, initial Cd(II), Co(II), Zn(II), and Pb(II) ion concentrations, dose of the sorbents, solution pH and temperature on the adsorption capacity. On the basis of experiments, it was found that the...

The method for chitosan (CS) covalent immobilization onto the NH2-functionalized magnetite nanoparticles surface is presented. Covalent binding of CS to the magnetite surface proceeds using a free -CH2OH group of CS and a NH2-group of magnetite with epichlorohydrin (ECH) as a cross linker. The obtained nanocomposites was functionalized by DTPA-grou...

The aim of the presented study was to investigate the sorption and physicochemical properties of the chelating ion exchangers with bis(2-pyridylmethyl)amine and aminophosphonic functional groups before and after the sorption of galvanic wastewaters. The study was carried out on the Dowex M4195, Lewatit® MonoPlus TP 220, Purolite S 940 and Purolite...

Zeolite Na–X and chitosan-modified Na–X–CS were used as adsorbents for the removal of Cu(II), Fe(III), Mn(II) and Zn(II) from aqueous solutions. They were prepared based on fly ash by hydrothermal reaction using the NaOH solution under controlled conditions. Characterization of the Na–X and Na–X–CS sorbents was made using Fourier transform infrared...

In the paper the potential of chitosan modified zeolite (NaP1CS) as a cheap adsorbent for methylene blue (MB) removal from aqueous solutions was determined. Fourier transform infrared spectroscopy analyses, nitrogen adsorption/desorption isotherms and scanning electron microscope were applied to characterize the adsorbent. Batch adsorption studies...

The adsorption of BTX (benzene, toluene, o- and p-xylene) from aqueous solution by synthetic zeolite Na-P1 obtained from fly ash was examined. The adsorbent was characterized by scanning electron microscope (SEM-EDS) and X-ray diffraction (XRD). Surface area and pore volume distribution were determined using a nitrogen adsorption/desorption isother...

Environmental pollution with petroleum products has become a major problem worldwide, and is a consequence of industrial growth. The development of sustainable methods for the removal of petroleum substances and their derivatives from aquatic and terrestrial environments and from air has therefore become extremely important today. Advanced technolo...

Obtaining useful sorbents from spent materials is of great importance. The paper presents the results of tests determining the kinetic and adsorption parameters on the removal of heavy metal Cu(II), Cd(II), Co(II) and Pb(II) ions on the carbonaceous adsorbents W1 KPS, W2 KPS, D1 CC3 and D2 CC3 obtained from spent ion exchangers. Among others the so...