Fouling-resistant ionic graft-polyamide nanofiltration membrane with improved permeance for lithium separation from MgCl2/LiCl mixtures was written by Soyekwo, Faizal;Wen, Hui;Liao, Dan;Liu, Changkun. And the article was included in Journal of Membrane Science in 2022.Name: Trimesoylchloride This article mentions the following:
Selective recovery of lithium from Salt Lake brines using environmentally friendly technologies is increasingly demanded to overcome the shortage of lithium. However, satisfying high separation precision is challenging for most polymer nanofiltration membranes. Besides, bestowing high permeance together with improved membrane fouling remains a challenge for the widespread implementation of membrane processes. Herein, a new tri-quaternary ammonium-based ionic liquid (TQAIL) electrolyte monomer is synthesized and utilized for the surface modification of nascent polyamide active layer to fabricate IL-modified polyamide nanofiltration (NF) membrane for Mg2+/Li+ separation Mol. dynamics simulations confirm that TQAIL modification creates nanoscale structural heterogeneity leading to enhanced surface hydrophilicity and reduces internal resistance through the membrane selective layer. The TQAIL membrane exhibits improved Li+/Mg2+ selectivity and improved water permeability of 26.11 L m-2 h-1 bar-1, which is fourfold that of unmodified membrane accompanied with a 100-h stable continuous nanofiltration. Moreover, the membrane displays good anti-biofouling behavior with excellent antimicrobial properties. This study offers new insights into how surface functionalization using multication side chains can remarkably improve ion separations by molecularly tuning ion-membrane electrostatic interactions in polymeric membranes. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Name: Trimesoylchloride).
Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Name: Trimesoylchloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics