- Tytuł:
- 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 - Powiązania:
- https://bibliotekanauki.pl/articles/1844394.pdf
- Data publikacji:
- 2020
- Wydawca:
- Instytut Technologiczno-Przyrodniczy
- Tematy:
-
adsorption properties
biocarbon
iron chloride(III)
magnetic hysteresis
magnetically susceptible sorbent
porous structure - Opis:
- 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.
- Źródło:
-
Journal of Water and Land Development; 2020, 47; 160-168
1429-7426
2083-4535 - Pojawia się w:
- Journal of Water and Land Development
- Dostawca treści:
- Biblioteka Nauki
Artykuł