Some new modified sorbents based on opoka from Astrakhan region were obtained. A comparative study of the sorption of cadmium ions on the surfaces of the sorbents was made. Also the static adsorption isotherm of substances from aqueous solutions was studied. The change of enthalpy, isobaric-isothermal potential and entropy of sorption and kinetics of cadmium ions sorption from water solutions were calculated. The results of the study can be used for the water purification from cadmium ions
[1] Alykov N. et al.: Prirodnye Mineralnye Resursy i Problemy Okruzhaushei Sredy Astrakhanskoi Oblasti, Astrakhan Univ., Astrakhan 2005.
[2] Omidi F., Behbahani M., Kalate Bojdi M., Shahtaheri S.: J. Magn. Magn. Mater., 2015, 395, 213. https://doi.org/10.1016/j.jmmm.2015.07.093
https://doi.org/10.1016/j.jmmm.2015.07.093
[3] Chen L., Lü L., Shao W., Luo F.: J. Chem. Eng. Data, 2011, 56, 1059. https://doi.org/10.1021/je101037x
https://doi.org/10.1021/je101037x
[4] Kostin A., Mostalygina L., Bukhtoyarov O.: Prot. Met. Phys. Chem. Surf., 2015, 51, 477. https://doi.org/10.7868/S0044185615050174
https://doi.org/10.7868/S0044185615050174
[5] Zamani A., Shokri R., Yaftian M., Parizanganeh A.: Int. J. Environ. Sci. Technol., 2013, 10, 93. https://doi.org/10.1007/s13762-012-0107-x
https://doi.org/10.1007/s13762-012-0107-x
[6] Kostin A., Mostalygina L., Bukhtoyarov O.: Prot. Met. Phys. Chem. Surf., 2015, 51, 5, 773.
https://doi.org/10.1134/S2070205115050172
https://doi.org/10.1134/S2070205115050172
[7] Bian Y., Bian Z., Zhang J. et al.: Chinese J. Chem. Eng., 2015, 23, 1705. https://doi.org/10.1016/j.cjche.2015.08.031
https://doi.org/10.1016/j.cjche.2015.08.031
[8] Mohammadi M., Ghaemi A., Asadollahzadeh M. et al.: Desalination Water Treat., 2015, 53, 149. https://doi.org/10.1080/19443994.2013.836990
https://doi.org/10.1080/19443994.2013.836990
[9] Kumar R., Chawla J., Kaur I.: J. Water Health, 2015, 13, 18. https://doi.org/10.2166/wh.2014.024
https://doi.org/10.2166/wh.2014.024
[10] Barka N., Ouzaouit K., Abdennouri M. et al.: Desalination Water Treat., 2012, 43, 8. https://doi.org/10.1007/s12011-015-0538-6
https://doi.org/10.1007/s12011-015-0538-6
[11] Mamedova S.: Eur. J. Anal. Appl. Chem., 2015, 1, 23.
https://doi.org/10.20534/EJAAC-15-1-23-26
[12] Ben Bouabdallah A., Djelali N.: Revue Roumaine de Chimie, 2015, 60, 321.
[13] Zeynalov R., Tatayeva S., Atayeva N.: Analitika i Control, 2013, 17, 89.
[14] Demirbas A.: J. Hazard. Mat., 2004, 109, 221.
https://doi.org/10.1016/j.jhazmat.2004.04.002
[15] Shachneva E. et al.: Ecologia i Promyshlennost Rossii, 2010, 8, 20.
[16] Nechayev E.: Khemosorbtsiya Organicheskikh Veshchestv na Oksidakh i Metallakh. Kharkov. Univ., Kharkov 1989.