Open AccessA sorbent based on polyvinyl formal and polyacrylic acid for the removal of heavy metals from water solutions
Author(s) -
Íàí Îâ÷àðåíêà,
Óêðà¿íà Êè¿â
Publication year - 2020
Publication title -
voprosy himii i himičeskoj tehnologii/voprosy himii i himičeskoj tehnologii
Language(s) - English
Resource type - Journals
eISSN - 2413-7987
pISSN - 0321-4095
DOI - 10.32434/0321-4095-2020-133-6-75-82
Subject(s) - sorbent , polyacrylic acid , adsorption , zinc , chemistry , metal ions in aqueous solution , metal , nuclear chemistry , extraction (chemistry) , polymer , inorganic chemistry , chromatography , organic chemistry
The characteristics of a hybrid pH-sensitive hydrogel sorbent based on polyvinyl formal and polyacrylic acid, synthesized by radical copolymerization, were investigated in the process of removing copper (II), zinc (II) and nickel (II) metal ions from water solutions. A high efficiency of the extraction (up to 96%) of metal cations (Cu(II)>Zn(II)Ni(II)) was reveled at their concentration of up to 250 mg L–1 in the pH range of 5.8 to 6.8. The experimental data were analyzed by using theoretical kinetic models and adsorption isotherms. The developed polymer sorbent was shown to be promising for removing heavy metals, even after its multiple regeneration.