Development and Investigation of Hydrogen Sulfide Adsorbents From Natural Materials

Adsorption materials based on natural minerals are considered in the world literature as inexpensive hydrogen sulfide adsorbents capable of completely replacing commercial products such as synthetic zeolites. The global demand for inexpensive, accessible, safe materials is growing, including in the field of cleaning industrial and agricultural gas emissions from hydrogen sulfide. The article presents an analysis of literary data on natural clays, activated sludge and other materials and methods of their use for hydrogen sulfide adsorption. Data on the composition of activated sludge, clays and limestone rocks are provided. The composition studies were carried out on an infrared spectrophotometer. The inorganic component of activated sludge includes iron oxide, aluminum, calcium, magnesium compounds, and silicates. Limestone consists of carbonates, iron oxide, silicates, and when calcined at high temperatures, it mainly forms calcium oxide. Various clays contain aluminosilicates, iron oxides, copper, cobalt, and manganese. Due to the content of metal oxides, natural materials have a chemisorption mechanism, and due to the content of aluminum and silicon compounds, they have a physical sorption mechanism. 17 compositions of composite materials from natural minerals were developed and their sulfur content was studied. A study was also conducted on the absorption capacity of activated sludge in a liquid state. It was shown that all natural materials have a high potential for use as adsorbents with minimal preparation (dehydration, calcination). Compositions that do not contain expensive additives, consisting mainly of сalcined limestone rock and clays, showed sulfur capacity from 10 to 40 %.

1. Alguacil F. J. (2023) Recent Advances in H2S Removal from Gas Streams. Applied Sciences, 13 (5), 3217. https://doi.org/10.3390/app13053217.

2. Kasulla S. Malik S. J., Zafar S., Saraf A. (2021) A Retrospection of Hydrogen Sulphide Removal Technologies in Biogas Purification. International Journal of Trend in Scientific Research and Development, 5 (3), 857–863.

3. Mulu E., M'Arimi M. M., Ramkat R. C. (2021) A Review of Recent Developments in Application of Low Cost Natural Materials in Purification and Upgrade of Biogas. Renewable and Sustainable Energy Reviews, 145, 111081. https://doi.org/10.1016/j.rser.2021.111081.

4. Jepleting A., Mecha A. C., Sombei D., Moraa D., Chollom M. N. (2025) Potential of Low-cost Materials for Biogas Purification, a Review of Recent Developments. Renewable and Sustainable Energy Reviews, 210, 115152. https://doi.org/10.1016/j.rser.2024.115152.

5. Mrosso R., Mecha A. C., Kiplagat J. (2024) Natural and Low-cost Sorbents as Part of the Solution for Biogas Upgrading: A Review. Adsorption, 30, 1–15. https://doi.org/10.1007/s10450-024-00464-9.

6. Iliev I., Filimonova A., Chichirov A., Vlasova A., Kamalieva R., Beloev I. (2025) Natural and Waste Materials for Desulfurization of Gaseous Fuels and Petroleum Products. Fuels, 6 (1), 13. https://doi.org/10.3390/fuels6010013.

7. Luján-Facundo M. J., Iborra-Clar M. I., Mendoza-Roca J., Alcaina-Miranda M. I., Maciá A. M., Lardín C., Pastor L., Claros (2020) Preparation of Sewage Sludge–Based Activated Carbon for Hydrogen Sulphide Removal. Water, Air and Soil Pollution, 231 (4), 187. https://doi.org/10.1007/s11270-020-04518-w.

8. Calderon S. T., Pampa-Quispe N. B., Huaranga M. A. C. (2022) Adsorption of Hydrogen Sulfide by Activated Carbon Produced by Regeneration of Sludge from Upflow Anaerobic Sludge Blanket. Engineering for Rural Developmemt, 5, 138–145. https://doi.org/10.22616/erdev.2022.21.tf041.

9. Barbosa V. L., Stuetz R. M. (2013) Performance of Activated Sludge Diffusion for Biological Treatment of Hydrogen Sulphide Gas Emissions. Water Science and Technology, 68 (9), 1932–1939. https://doi.org/10.2166/wst.2013.444.

10. Shi L., Yang Q., Xu Z.-Z., Yang С. (2024) Technologies for Insitu H2S Control in Wastewater Treatment Plants: A Review. Journal of Water Process Engineering, 65, 105716. https://doi.org/10.1016/j.jwpe.2024.105716.

11. Gulshin I. A., Gogina E. S. (2019) Single-sludge System of Advanced Low-oxygen Wastewater Treatment with Nitrogen Compounds Removal. Voda i Ekologiya: Problemy i Resheniya = Water and Ecology: Problems and Solutions, 24 (4), 9–19. https://doi.org/10.23968/2305-3488.2019.24.4.9-19 (in Russian).

12. Anikin Yu. V., Shilkov V. I. (2018) Modern Materials and Technologies of Industrial Wastewater Treatment. Russian Journal of Construction Science and Technology, 4 (2), 22–26. https://doi.org/10.15826/rjcst.2018.2.004

13. Moskvicheva E. V., Voytyuk A. A., Doskina E. P., Ignatkina D. O., Yuryev Yu. Yu., Shchitov D. V. (2015) Improving the Technology of Municipal Wastewater Treatment using a Sorbent Based on Excess Activated Sludge. Engineering Bulletin of the Don, 36 (2–2). Available at: http://www.ivdon.ru/uploads/article/pdf/IVD_85_moskvicheva.pdf_c2b9890852.pdf (in Russian).

14. Barbosa V. L., Burgess J. E., Darke K, Stuetz R. M. (2002) Activated Sludge Biotreatment of Sulphurous Waste Emissions. Re/Views in Environmental Science and Bio/Technology, 1 (4), 345–362. https://doi.org/10.1023/A:1023229319150.

15. Iliev I., Filimonova A., Vlasova A., Kamalieva R., Beloev H. (2024) Desulfurization Technology for Industrial Fuel Gases Using Natural Adsorption Materials. Engineering Proceedings, 70 (1), 42. https://doi.org/10.3390/engproc2024070042.

16. He X., Chen Y., Gao J., Wang F., Shen B. (2024) Research Progress and Application Prospects of Modified Clay Materials for Flue Gas Pollutants Purification. Applied Clay Science, 258, 107483. https://doi.org/10.1016/j.clay.2024.107483.

17. Wal K., Rutkowski P., Stawiński W. (2021) Application of Clay Minerals and their Derivatives in Adsorption from Gaseous Phase. Applied Clay Science, 215, 106323. https://doi.org/10.1016/j.clay.2021.106323.

18. Saha B., Vedachalam S., Dalai A. K. (2021) Review on Recent Advances in Adsorptive Desulfurization. Fuel Processing Technology, 214, 106685. https://doi.org/10.1016/j.fuproc.2020.106685.

19. Alcaraz M. G. T., Choia A. E. S., Dugos N. P., Wan M.-W. (2023) A Review on the Adsorptive Performance of Bentonite on Sulfur Compounds. Chemical Engineering Transactions, 103, 553–558. https://doi.org/10.3303/CET23103093.

20. Zykova I. V., Panov V. P., Petukhova E. A., Dadaeva A. R. (2004) Extraction of Heavy Metals from Activated Sludge. Ekologia i promyshlennost Rossii =Ecology and Industry of Russia, (11), 34–35 (in Russian).

21.