Xiang, Wenjun

Wenjun Xiang from UConn is a PhD candidate, a husband, and a son. My research topic focuses on resources recovery via electrochemical methods: Membrane-capacitive deionization and Li-selective membrane sensors.

Titles from this speaker

Description: Advancing lithium recovery from brine through highly selective membrane-capacitive...

Advancing lithium recovery from brine through highly selective membrane-capacitive deionization (M-CDI) and real-time monitoring using miniature solid-state lithium sensors

Abstract

In the 21st century, two pivotal requirements for lithium recovery should be met: 1) lithium recovery from brine and 2) real-time in-situ lithium concentration monitoring. This study develops a state-of-the-art polyelectrolyte multilayer ion selective membrane (PEM-ISM) sensor focusing lithium in the brine. The mm-sized S-ISM sensors were made by precisely electrospraying a well-mixed lithium ionophore cocktail matrix and then dipping deposition polycation (Poly(allylamine hydrochloride) and polyanion (poly(sodium 4-styrenesulfonate)) for enhanced adhesion and stable structure onto the electrode surface. And also, PEM-ISM sensor was incorporated with M-CDI for the first time to record the lithium concentration changes with adsorption/desorption cycles. Tests results indicated that PEM-ISM sensors possessed excellent selectivity, accuracy, and stability to record the lithium concentrations. In summary, the integration of novel Li sensor with M-CDI has a great potential to advance Li recovery from brine wastewater and determine the maximum capacity of M-CDI, and ultimately elevate lithium recovery efficiency.

This study develops a state-of-the-art polyelectrolyte multilayer ion selective membrane (PEM-ISM) sensor focusing lithium in the brine. And also, PEM-ISM sensor was incorporated with M-CDI for the first time to record the lithium concentration changes with adsorption/desorption cycles.

SpeakerXiang, Wenjun

Presentation time

16:30:00

17:00:00

Session time

15:30:00

17:00:00

SessionWater Reuse and Resource Recovery: Brines, Trains, and (EV) Automobiles

Session locationRoom S504c - Level 5

TopicIntermediate Level, Resilience, Disaster Planning and Recovery, Sustainability and Climate Change, Water Reuse and Reclamation

Author(s)

Zhang, Mi

Author(s)M. Zhang 1; J. Buslewicz 2 ; W. Xiang 3; J. Contreras 4; X. Wang 1; Y. Fan 5; J. McCutcheon 6; B. Li 6; M. Zhang 1;

Author affiliation(s)Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, CT, USA 1; Department of Civil and Environmental Engineering, University of Connecticut 2 ; Department of Civil and Environmental Engineering, University of Connecticut 3; Department of Civil and Environmental Engineering, University of Connecticut 4; Department of Civil and Environmental Engineering, University of Connecticut 1; Department of Civil and Environmental Engineering, University of Connecticut 5; Department of Chemical & Biomolecular Engineering, University of Connecticut 6; Department of Civil and Environmental Engineering, University of Connecticut 6;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159054

Volume / Issue

Content sourceWEFTEC

Word count20