Тип публикации: статья из журнала
Год издания: 2019
Идентификатор DOI: 10.14258/jcprm.2019035180
Ключевые слова: Alkaline activation, Aspen bark, Carbon sorbent, Carbonization, Mesopores, Methylene blue, Micropores, Vitamin B12
Аннотация: The effect of temperature of aspen bark pre-carbonization on evolution of a porous structure and sorption properties of the carbon sorbents prepared in results of thermo alkaline activation of carbonizats with hydroxide potassium was studied. The relationship of a sorption of methylene blue and vitamin B12 by the sorbents from aspen bark to a volume and size of pores was established. It was shown, that the carbon sorbents capacity at a methylene blue are defined by pores with width 0.86-2.95 nm, and at a vitamin B12 - 3.18-6.89 nm. Comparation of the porous structures parameters and sorption properties of the carbon sorbents from aspen bark and commercial activated carbon for medical purposes was maked. Kinetic of markers sorption onto sorbents with different porous structure was studied and the corresponding rate constants were calculated. The possibility preparation of a carbon sorbent have high rate of vitamin B12 sorption (rate constant is 3.953 min-1) was shown. The determinations of a sorption capacity of sorbents in conditions assume at enterosorbents test were carry out. It was determined, that sorbents, prepped from aspen bark, exceeds the sample of industrial activated carbon for medical purposes at sorption capacity of methylene blue and vitamin B12 in 1.7 and 1.5 time, correspondingly. © 2019 Altai State University. All rights reserved.
Журнал: Khimiya Rastitel'nogo Syr'ya
Выпуск журнала: Is. 3
Номера страниц: 325-333
ISSN журнала: 10295151
Издатель: Altai State University
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- Scopus (цитирований 1)
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