Abstract: A green and energy-efficient technique for production of porous carbon-mineral chars from agricultural wastes (rice husk, wheat bran) and sedimentary carbonaceous feedstocks (high-ash peat, coal) was developed. It is based on partial combustion in fluidized bed of a deep oxidation catalyst at low temperatures (465 – 600 ◦C). This technique yields porous chars with an elevated mineral content that depends on a feedstock used, and gaseous products of complete oxidation. It was found that the obtained chars have developed porosity with BET specific surface area of ca. 50 – 170 m2g−1, pore volume of 0.05 – 0.17 ml·g−1, and ash content of 16 – 79 wt. %. They were additionally characterized by TGA and FTIR. Their testing as adsorbents for heavy metal ions (by the example of Cu2+) and organic dyes (by the example of methyl green) revealed that their adsorption capacities are comparable to those of chars produced by the conventional pyrolytic approaches.

Cite: Yeletsky P.M. , Yazykov N.A. , Dubinin Y.V. , Borodaevskiy M.M. , Selishcheva S.A. , Yakovlev V.A.
Green Approach to Production of Porous Char Adsorbents via Oxidative Carbonization in Fluidized Catalyst Bed
Наносистемы: физика, химия, математика = Nanosystems: physics, chemistry, mathematics. 2024. V.15. N2. P.285-299. DOI: 10.17586/2220-8054-2024-15-2-285-299 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Dec 16, 2023
Accepted:	Mar 10, 2024
Published print:	Apr 1, 2024

Identifiers:

Web of science:	WOS:001230126300008
Scopus:	2-s2.0-85201297680
Elibrary:	67220850
OpenAlex:	W4398239035

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