Research output: Contribution to journal › Article › peer-review
Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La 3+. / Pulyalina, Alexandra ; Grekov, Konstantin ; Tataurova, Vera ; Senchukova, Anna ; Novikov, Alexander ; Faykov, Ilya ; Polotskaya, Galina .
In: Scientific Reports, Vol. 12, No. 1, 8200, 12.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La 3+
AU - Pulyalina, Alexandra
AU - Grekov, Konstantin
AU - Tataurova, Vera
AU - Senchukova, Anna
AU - Novikov, Alexander
AU - Faykov, Ilya
AU - Polotskaya, Galina
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF copolyimide membranes were prepared using [hmim][TCB] ionic liquid (IL) co-solvent which can be considered as an environmentally friendly alternative to conventional solvents. The membranes were characterized by ATR-FTIR, TGA, SEM and quantum chemical calculations. A significant difference in morphology of these membranes was revealed by SEM of membrane cross-sections; the P84 membrane has finger-like structure of porous substrate in contrast to spongy structure of substrate for the P84/IL membrane due to a higher dynamic viscosity of the casting solution. The transport parameters were determined in ultrafiltration tests with pure water and an aqueous solution of bovine serum albumin. The addition of ionic liquid to the P84 casting solution increases the performance of the membrane. The rejection capacity was evaluated with respect to La3+ in the form of a lanthanum alizarin complex (LAC) in aqueous acetone solution. The P84 membrane prepared using IL showed a high rejection (98.5%) with respect to LAC, as well as a significant productivity.
AB - Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF copolyimide membranes were prepared using [hmim][TCB] ionic liquid (IL) co-solvent which can be considered as an environmentally friendly alternative to conventional solvents. The membranes were characterized by ATR-FTIR, TGA, SEM and quantum chemical calculations. A significant difference in morphology of these membranes was revealed by SEM of membrane cross-sections; the P84 membrane has finger-like structure of porous substrate in contrast to spongy structure of substrate for the P84/IL membrane due to a higher dynamic viscosity of the casting solution. The transport parameters were determined in ultrafiltration tests with pure water and an aqueous solution of bovine serum albumin. The addition of ionic liquid to the P84 casting solution increases the performance of the membrane. The rejection capacity was evaluated with respect to La3+ in the form of a lanthanum alizarin complex (LAC) in aqueous acetone solution. The P84 membrane prepared using IL showed a high rejection (98.5%) with respect to LAC, as well as a significant productivity.
KW - Chemistry
KW - Ecology
KW - Green chemistry
KW - Materials science
KW - Ionic Liquids
KW - Water
KW - Solvents
KW - Ultrafiltration
KW - Serum Albumin, Bovine
KW - Membranes, Artificial
UR - https://www.mendeley.com/catalogue/10334681-8c79-3dbd-8928-76f9dfdc4fed/
UR - http://www.scopus.com/inward/record.url?scp=85130166231&partnerID=8YFLogxK
U2 - 10.1038/s41598-022-12377-0
DO - 10.1038/s41598-022-12377-0
M3 - Article
C2 - 35581282
VL - 12
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 8200
ER -
ID: 96487552