Synthesis of nanofiber composite doped with nitrogen groups from biomass by chemical activation

Authors

  • M.S. Kunarbekova Laboratory of Engineering Profile, Satbayev University, 22a Satpayev str., Almaty, Kazakhstan
  • I.O. Sapargali Laboratory of Engineering Profile, Satbayev University, 22a Satpayev str., Almaty, Kazakhstan
  • L.N. Seimukhanova Laboratory of Engineering Profile, Satbayev University, 22a Satpayev str., Almaty, Kazakhstan
  • K.K. Kudaibergenov Laboratory of Engineering Profile, Satbayev University, 22a Satpayev str., Almaty, Kazakhstan
  • S. Azat Laboratory of Engineering Profile, Satbayev University, 22a Satpayev str., Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/cpc22(1)3-11

Keywords:

adsorption, composite, iodine, activated carbon, urea.

Abstract

Carbon sorbents are widely used in the wastewater treatment system due to their adaptable properties to various types of pollutants. The removal of radionuclides, in particular radioactive iodine, is a difficult task, since its composition includes anions and molecular iodine (I2) in water and air. In this paper, the ability and mechanism of iodine sorption by carbon sorbents based on biomass are discussed. In this work, for the first time, a series of activated carbons based on walnut shells has been chemically activated by KOH and modified with nitrogen groups due to the hydrothermal introduction of urea into the structure of activated carbon. Nitrogen doping was carried out to introduce positively charged active centers. This work includes an assessment of the preparation, characteristics and effectiveness of carbon-containing sorbents for the removal of iodine compounds from aqueous media. A simple one-reactor synthesis of a composite based on activated carbon modified with nitrogen-containing groups of WN Urea KOH has been developed. The sorption capacity of the sorbent was 459.42 mg I- per g of composite with an initial concentration of 100 mg/l iodide ion. The sorption capacity of the composite without modification by WN KOH nitrogen groups was 432.5 mg/g with an initial concentration of 100 mg/l iodide ion.

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Published

2024-03-25

How to Cite

Kunarbekova, M., Sapargali, I., Seimukhanova, L., Kudaibergenov, K., & Azat, S. (2024). Synthesis of nanofiber composite doped with nitrogen groups from biomass by chemical activation. Combustion and Plasma Chemistry, 22(1), 3–11. https://doi.org/10.18321/cpc22(1)3-11

Issue

Vol. 22 No. 1 (2024): COMBUSTION AND PLASMACHEMISTRY

Section

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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