Julia Sordyl

AGH UST in Kraków (Poland) and Uppsala University (Sweden)

Rare earth elements (REE) in calcium apatite have been widely described in the literature. Based on the investigations of minerals and their synthetic analogs, the mechanism of substitution of REE3+ for Ca2+ and their structural positions are well established. Although the presence of REE in natural pyromorphite has been reported, the structural re...

U(VI) in natural pyromorphite reaches 0.5 wt%. However, this depends on concentration of U in source solutions and the upper limit of incorporation of uranyl into pyromorphite at low temperature is unknown. If U(VI) incorporation capacity in the structure is high enough, Pb-apatite could be used in radioactive waste remediation. In this study, ei...

Search for inexpensive and efficient methods of critical raw materials recovery is of great importance across the world due to growing demand for green technologies. Formation and detailed characterization of new Pb- and Light Rare Earth Elements (LREE)-containing phosphates, compared to already described Pb- or LREEcontaining phosphates, was descr...

Introduction There is growing demand for novel REE recovery methods from alternative ores and previously economically unavailable sources, due to the Chinas’ continuous domination of the REE market. One of the recently developed methods is leaching of apatite using phosphoric acid followed by coprecipitation of REE phosphates in the presence of Pb...

The supply of technologically important rare earth elements (REE) is a concern in Europe, hence the recovery of REE from alternative sources has recently become widely investigated. One of the problems is the lack of cost-effective technologies for REE recovery from leaching solutions. The present work investigated the potential for recovering REE...

Arsenic is one of the most toxic elements and occurs at concentrations above drinking water standards (0.01 mg/ dm3) in many parts of the world [1]. A novel method for removal of AsO43- ions from aqueous solutions is proposed herein. The principle of the method is based on reaction with cerussite PbCO3 in the presence of Cl- ions, resulting in prec...

Research on rare earth elements (REE) is currently of high importance due to these elements being considered as critical raw materials. Particularly REE phosphates are the subject of laboratory experiments since they have various applications resulting from their structural diversity. In crystalline rocks REE phosphates occur as monazites and xenot...

Lead hydrogen arsenate PbHAsO4 and lead hydrogen phosphate PbHPO4, which can form a continuous solid solution series, have been extensively studied owing to their ferroelectric properties. PbHAsO4 has also been found to occur in weathered As- and Pb-rich outcrops and historically contaminated soils as a schultenite mineral. Although most ferroelect...

Synthetic schultenite PbHAsO4 and its phosphate analogue PbHPO4 have been extensively studied due to their ferroelectric properties. They have also been found to occur in Earth's surface environments. Although the natural occurrence of PbHPO4 has not been well documented yet, the experimental works showed that both phases can form a continuous soli...

Although vanadinite (Pb5(VO4)3Cl) occurs in abundance in various terrestrial geochemical systems of natural and anthropogenic origin and is seriously considered as a potential nuclear waste sequestering agent, its actual application is severely limited by a lack of understanding of its basic thermodynamic parameters. In this regard, the greatest ch...

Five lead-arsenate apatites (mimetites)-Pb5(AsO4)3X—where X denotes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and hydroxide (OH)—were synthesized via precipitation from aqueous solutions. The crystal structures were determined through Rietveld refinement of powder synchrotron X-ray data. All the compounds crystallized in the hexagonal...