Dynamics of Hydrogen Sulfide Adsorption in Pulse Mode on Activated Carbons Produced from Plant Waste

Dynamics of Hydrogen Sulfide Adsorption in Pulse Mode on Activated Carbons Produced from Plant Waste Full article

Journal

Clean Technologies
ISSN: 2571-8797

Output data

Year: 2026, Volume: 8, Number: 3, Article number : 81, Pages count : DOI: 10.3390/cleantechnol8030081

Authors

Greish Alexander A. ¹ , Sokolovskiy Pavel V. ¹ , Finashina Elena D. ¹ , Tkachenko Olga P. ¹ , Khabibullin Timur R. ² , Polikarpova Svetlana B. ³ , Kirsanov Vladislav Yu. ³ , Ponomarev Valeriy E. ³ , Medvedev Artem A. ^4,1 , Kustov Leonid M. ^4,1

Affiliations

1	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
2	Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, ul. Lobachevskogo 2/31, 420088 Kazan, Russia
3	N.V. Sklifosovskiy Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia
4	Chemistry Department, Moscow State University, 119992 Moscow, Russia

The adsorption of H2S impurity in the gas flow on carbon adsorbents produced from coconut shells and sugarcane bagasse was studied. The runs were carried out in pulse mode. An original chromatographic method for determining the degree of H2S absorption on carbon adsorbents has been developed, which makes it possible to determine the amount of absorbed H2S in air and water environments. The results obtained show that the successive treatment of carbon adsorbents first with a solution of a strong oxidizer (HNO3, KMnO4) and then, after washing, with an alkali solution (KOH) leads to a sharp increase in the amount of H2S adsorbed. The efficiency of H2S absorption on the obtained adsorbent reaches 85.5%, which corresponds to 27.7 mg/g H2S and is comparable to the results obtained on commercial coconut carbon (CAU). The data allow one to conclude that the rise in the H2S adsorption on the carbon sorbents studied can be due to the increase in the micropores’ volume in the activated carbon, as well as the formation of surface functional groups containing an alkali metal (i.e., C-OK, C-COOK) that promotes irreversible chemisorption of H2S impurity on the carbon adsorbent. The absorption of H2S occurs through the chemisorption mechanism, which is confirmed by IR spectroscopy data.

Greish A.A. , Sokolovskiy P.V. , Finashina E.D. , Tkachenko O.P. , Khabibullin T.R. , Polikarpova S.B. , Kirsanov V.Y. , Ponomarev V.E. , Medvedev A.A. , Kustov L.M.
Dynamics of Hydrogen Sulfide Adsorption in Pulse Mode on Activated Carbons Produced from Plant Waste
Clean Technologies. 2026. V.8. N3. 81 . DOI: 10.3390/cleantechnol8030081 OpenAlex

Submitted:	Mar 26, 2026
Published online:	Jun 1, 2026

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