Affiliation:
1. Federal Scientific Centre of Agroecology, Complex Melioration and Protective Afforestation of the Russian Academy of Sciences
Abstract
The results of studies of the carbon sorbent adsorption properties by atomic absorption spectrometry are presented. Carbon sorbent was obtained by graphite nitrate cointercalation compound thermal expansion at 900 °C. It is shown that the Freundlich, Langmuir and Temkin equations adequately describe the adsorption of the studied metal ions by a carbon sorbent. The carbon sorbent after the adsorption of heavy metal ions was studied using energy-dispersive X-ray spectrometry and X-ray powder diffraction. The limit values were fixed for the adsorption capacity of the sorbent relative to Cu2+, Ni2+, Fe2+ as 0.94; 0.85 and 0.58 mmol/g sorbent, respectively. It was concluded that the conducted studies indicate the possibility of using such sorbent in processes of water purification from heavy metal ions.
Reference15 articles.
1. Plotnikov E., Martemianova I., Martemianov D., Zhuravkov S., Voronova O., Korotkova E., Silnikov V. Water purification with natural sorbents: effect of surface modification with nano-structured particles. Procedia Chemistry. 2015. Vol. 15. P. 219—224. https://doi.org/10.1016/j.proche.2015.10.035.
2. Sweetman M.J., May S., Mebberson N., Pendleton Ph., Vasilev K., Plush S.E., Hayball J.D. Activated carbon, carbon nanotubes and graphene: materials and composites for advanced water purification. Journal of Carbon Research. 2017. Vol. 3. P. 1—29. https://doi.org/10.3390/c3020018.
3. Schwarzenbach R.P., Escher B.I., Fenner K., Hofstetter T.B., Johnson C.A., Gunten U., Wehrli B. The challenge of micropollutants in aquatic systems. Science. 2006. Vol. 313 (5790). P. 1072—1077. https://doi.org/10.1126/science.1127291.
4. Kuznetsov B.N., Chesnokov N.V., Mikova N.M., Shendrik T.G., Lyubchik S.B., Savos'kin M.V. Poluchenie iz prirodnogo grafita i antratsita uglerodnykh nanostrukturnykh sorbentov i nositelei. Hydrogen materials science and chemistry of carbon nanomaterials VIII International Conference. Sudak—Crimea, Ukraine. September 14—20, 2003. C. 514—515.
5. Meritsidi I.A., Sidorenko V.G., Kovalenko B.M., Tul'skii V.F. Primenenie sorbenta STRG dlya ochistki vodnoi poverkhnosti ot razlivov nefti i nefteproduktov, zhirov i razlichnykh vodonerastvorimykh organicheskikh soedinenii. Neftepromyslovoe delo. 2002. № 12. S. 364—368.