Structural, magnetic and adsorption characteristics of magnetically susceptible carbon sorbents based on natural raw materials

• Autorzy: Soloviy Christina , Malovanyy Myroslav , Bordun Ihor , Ivashchyshyn Fedir , Borysiuk Anatoliy , Kulyk Yuriy

Identyfikatory

DOI

10.24425/jwld.2020.135043

• Języki publikacji: EN

Abstrakty

EN

The article comprises synthesis of magnetically susceptible carbon sorbents based on bio raw materials – beet pulp. The synthesis was performed by one- and two-step methodology using FeCl₃ as an activating agent. X-ray diffraction methods showed an increase in the distance between graphene layers to 3.7 Å in biocarbon synthesized by a two-step technique and a slight decrease in inter-graphene distance to 3.55 Å for biocarbon synthesized by an one-step technique. In both magnetically susceptible samples, the Fe₃O₄ magnetite phase was identified. Biocarbon synthesized by a two-step technique is characterized by a microporous structure in which a significant volume fraction (about 35%) is made by pores of 2.2 and 5 nm radius. In the sample after a one-step synthesis, a significant increase in the fraction of pores with radii from 5 to 30 nm and a decrease in the proportion of pores with radii greater than 30 nm can be detected. Based on the analysis of low-angle X-ray scattering data, it is established that carbon without magnetic activation has the smallest specific area of 212 m²∙сm^–3, carbon after one-stage synthesis has a slightly larger area of 280 m²∙сm^–3, and after two-stage synthesis has the largest specific surface area in 480 m²∙сm^–3. The adsorption isotherms of blue methylene have been studied. Biocarbon ob-tained by two-step synthesis has been shown to have significantly better adsorption properties than other synthesized biocarbons. Isotherms have been analysed based on the Langmuir model.

Słowa kluczowe

EN

adsorption properties; biocarbon; iron chloride(III); magnetic hysteresis; magnetically susceptible sorbent; porous structure

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2020
• Tom: no. 47
• Strony: 160--168
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Soloviy Christina

• Lviv Polytechnic National University, Department of Ecology and Sustainable Environmental Management, Stepana Bandery Str., 12, Lviv, Lviv Oblast, 79000, Ukraine

autor

Malovanyy Myroslav

• Lviv Polytechnic National University, Department of Ecology and Sustainable Environmental Management, Stepana Bandery Str., 12, Lviv, Lviv Oblast, 79000, Ukraine

autor

Bordun Ihor

• Czestochowa University of Technology, Faculty of Electrical Engineering, Częstochowa, Poland

autor

Ivashchyshyn Fedir

• Czestochowa University of Technology, Faculty of Electrical Engineering, Częstochowa, Poland

autor

Borysiuk Anatoliy

• Lviv Polytechnic National University, Department of Ecology and Sustainable Environmental Management, Stepana Bandery Str., 12, Lviv, Lviv Oblast, 79000, Ukraine

autor

Kulyk Yuriy

• Ivan Franko National University of Lviv, Faculty of Physics, Lviv, Ukraine

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).