Kinetic regularities of copper ions adsorption by natural zeolite

Abstract

Abstract.1 The kinetics of copper ions adsorption by natural zeolite has been investigated in the apparatus with mechanical stirrer. The presence of external diffusion and pore diffusion area was established. For the external diffusive area, the dependence of mass transfer coefficient on stirrer rotation speed was confirmed; the dependence was described using a criterial equation. For the pore diffusion area, the equation is adduced by means of which the effective coefficient of pore diffusion was calculated.

Investigation of Migration of Heavy Metals in the Soil Environment on the Example of Copper Sulfate

“…The analysis of Cu 2+ ions in the samples was carried out using a titrometric method according to the method described in [8].…”

“…Determination of the concentration of copper ions in the solution after the experiment was carried out by a titrometric method [8]. The mass of adsorbed copper was determined by the difference of the concentrations of the initial and final solutions.…”

Determination of Competitive Adsorption Regularities in Multicomponent Systems

“…У попередніх публікаціях наведено результати досліджень щодо адсорбції іонів Cu (II), Cr (III) та Cr (VI) з однокомпонентних [8] та бінарних розчинів [9,10]. Встановлено, що на селективність вилучення іонів впливав радіус атома.…”

The Research of Ammonium Concentrations in City Stocks and Further Sedimentation of Ion-Exchange Concentrate

“…Assessment of surface water objects influenced by the contaminating components of effluents (Kulikova et al, 2016, as well as the analysis of natural of purification systems of effluents filtering from accumulation pounds in the "aeration nature zone-wastewater" system (Pavlichenko et al, 2013) proved to be important. Treatment of the water from various types of pollution by methods such as chlorination (Styskal et al, 2014), ozonization (Mosin, 2011), ultraviolet irradiation (Vronska et al, 2013), ion exchange (Malovanyy et al, 2013), electrodialysis (Gomelia et al, 2017, Shmandiy et al, 2017), biological purification (Malovanyy et al, 2016, Malovanyy et al, 2018, adsorption on natural mineral sorbents (Sabadash et al, 2017, Malovanyy et al, 2013 and of plant origin (Danchenko et al, 2017, Bezdeneznych et al, 2009, typically requires expensive reagents and equipment, sometimes also introducing secondary hazardous contaminants to the system (chlorination and ozonation).…”