Autor: Szcześ, Aleksandra - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Determination of surface free energy components of organic liquids by the thin layer wicking method
Autorzy:: Hołysz, Lucyna
Szcześ, Aleksandra
Powiązania:: https://bibliotekanauki.pl/articles/764058.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Opis:: Using the layer wicking method (TLW method) the electron-donor interactions of surface free energy of the organic liquids: benzene (C6H6), toluene C6H5CH3), and tetrahydrofuran ((CH2)4O) was determined. For this purpose the penetration rate measurements of these liquids in the porous layers of silica gel and alumina were performed. The obtained values of the electron-donor parameter of surface free energy of the studied organic liquids were compared with the literature data obtained by the direct measurement of the interface tensions of water/organic liquids.
Źródło:: Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2016, 71, 2
2083-358X
Pojawia się w:: Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Synthesis of hydroxyapatite derived from agricultural waste and its applications as an adsorbent for heavy metal removal from wastewater
Autorzy:: Kalbarczyk, Marta
Szcześ, Aleksandra
Powiązania:: https://bibliotekanauki.pl/articles/2079904.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:: hydroxyapatite, eggshell, adsorption, heavy metal, wastewater
Opis:: The presence of heavy metals in aquatic systems can be harmful to living species. Heavy metals are not biodegradable, and their tendency to accumulate in living organisms often causes different, undesirable consequences. Therefore, removing these impurities from wastewater has become one of the key issue related to environmental protection [Babel and Kurniawan 2004].There are many methods developed to remove heavy metals from wastewater and adsorption is one of the most popular one. Despite of the diversity of these technologies there is still a need to develop methods that do not require a large financial input [Hegazi 2013, Renu et al. 2017].The most important features that determine materials used as adsorbent is their low cost, biocompatibility and environmental friendly nature and hydroxyapatite presents all of them. Moreover, hydroxyapatite particles are characterized by high specific surface area and simple method of synthesis. It is also reported that it can be obtained from agricultural waste based on calcium like eggshells [Akram et al. 2014].The aim of this paper is to show and compare different methods of hydroxyapatite synthesis using eggshells as a source of calcium and it sorption capacity due to different metal cations from aqueous solution.
Źródło:: Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2019, 74, 2; 53-68
2083-358X
Pojawia się w:: Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Microwave assistant synthesis of calcium phosphate minerals using hen’s eggshells as a calcium source
Autorzy:: Kalbarczyk, Marta
Szcześ, Aleksandra
Powiązania:: https://bibliotekanauki.pl/articles/1450409.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: hydroxyapatite
brushite
β-TCP
microwave assisted synthesis
Opis:: In this study raw hen’s eggshells were used as a calcium source for calcium phosphate mineral synthesis. The materials composed of brushite and different amounts of HA (hydroxyapatite) and β-TCP (β-tricalcium phosphate) with the needle-like, sheet-like and hexagonal structures were synthesized in the presence of the microwave. It was found that the time of microwave action, temperature and initial pH are parameters affecting the morphology and composition of the obtained materials, i.e. the increasing duration of MW exposure increases the amount of HA increases, whereas the temperature increase causes an increase in the contents of brushite and β-TCP. The lowering of initial pH leads to an increase in the brushite content.
Źródło:: Physicochemical Problems of Mineral Processing; 2020, 56, 6; 167-177
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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