Open AccessSORPTION OF HEAVY METAL CATIONS FROM A WATER-SALT SYSTEMBY NATURAL MONTMORILLONITE
Author(s) -
U.Zh. Jussipbekov,
R.M. Chernyakovа,
А. А. Аgatayeva,
N.N. Kozhabekova,
R.А. Kaiynbayeva,
G.Sh. Sultanbayeva
Publication year - 2021
Publication title -
himičeskij žurnal kazahstana
Language(s) - English
Resource type - Journals
eISSN - 2710-1185
pISSN - 1813-1107
DOI - 10.51580/2021-1/2710-1185.22
Subject(s) - sorption , montmorillonite , sorbent , bentonite , chemistry , metal ions in aqueous solution , adsorption , metal , inorganic chemistry , absorption (acoustics) , chemical engineering , materials science , organic chemistry , engineering , composite material
The sorption properties of natural montmorillonite from the Tagan deposit with respect to heavy metal cations were researched on the model system "Mn2+–Co2+– Ni2+–V4+–H2O–montmorillonite". The influence of temperature, duration of the process and concentration of solutions, as well as the norm of the sorbent on the degree of sorption of cations is considered. The optimal conditions for the sorption process (25о С, 30 min, Т:Ж = 1,5:100) have been determined, at which the degree of solution purification is up to 86.36% cations of Co2+, 85.59% of Ni2+, 82.64% of Mn2+ and 52.29% of V4+. The nature of the sorption curves is determined by the nature of the sorbed cation. According to the absorption efficiency of natural montmorillonite, ions are arranged in the following order: Ni2+≥ Co2+> Mn2+> V4+. The results of the conducted studies indicate the possibility of effective use of bentonite clays of the Tagan field in the purification of wastewater from heavy metal cations