PMID- 38132892
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231224
IS  - 2077-0375 (Print)
IS  - 2077-0375 (Electronic)
IS  - 2077-0375 (Linking)
VI  - 13
IP  - 12
DP  - 2023 Nov 27
TI  - Heterogeneous Anion-Exchange Membranes with Enhanced Ion Conductivity for 
      Continuous Electrodeionization.
LID - 10.3390/membranes13120888 [doi]
LID - 888
AB  - In this study, the optimal fabrication parameters of a heterogeneous 
      anion-exchange membrane (AEM) using an ionomer binder are investigated to improve 
      the performance of continuous electrodeionization (CEDI) for producing ultrapure 
      water. Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) is selected as the base 
      material for preparing the ionomer binder and quaternized to have various ion 
      exchange capacities (IECs). The optimal content of ion-exchange resin (IER) 
      powder according to the IEC of the ionomer binder is then determined through 
      systematic analyses. In conclusion, it is revealed that a heterogeneous AEM with 
      optimal performance can be fabricated when the IEC of the ionomer binder is 
      lowered and the content of IER powder is also lower than that of conventional 
      heterogeneous membranes. Moreover, crosslinked quaternized PPO (QPPO) nanofiber 
      powder is used as an additive to improve ion conductivity without deteriorating 
      the mechanical properties of the membrane. The membrane fabricated under optimal 
      conditions exhibits significantly lower electrical resistance (4.6 Omega cm(2)) 
      despite a low IER content (30 wt%) compared to the commercial membrane (IONAC 
      MA-3475, 13.6 Omega cm(2)) while also demonstrating moderate tensile strength (9.7 
      MPa) and a high transport number (ca. 0.97). Furthermore, it is proven that the 
      prepared membrane exhibits a superior ion removal rate (99.86%) and lower energy 
      consumption (0.35 kWh) compared to the commercial membrane (99.76% and 0.4 kWh, 
      respectively) in CEDI experiments.
FAU - Lee, Ji-Min
AU  - Lee JM
AD  - Department of Green Chemical Engineering, College of Engineering, Sangmyung 
      University, Cheonan 31066, Republic of Korea.
FAU - Kang, Moon-Sung
AU  - Kang MS
AUID- ORCID: 0000-0002-5210-785X
AD  - Department of Green Chemical Engineering, College of Engineering, Sangmyung 
      University, Cheonan 31066, Republic of Korea.
LA  - eng
GR  - 2022-A000-0323/Sangmyung University/
PT  - Journal Article
DEP - 20231127
PL  - Switzerland
TA  - Membranes (Basel)
JT  - Membranes
JID - 101577807
PMC - PMC10744961
OTO - NOTNLM
OT  - continuous electrodeionization
OT  - heterogeneous anion-exchange membrane
OT  - ion-exchange capacity
OT  - ionomer binder
OT  - nanofiber powder
OT  - poly(2,6-dimethyl-1,4-phenylene oxide)
COIS- The authors declare no conflict of interest.
EDAT- 2023/12/22 12:43
MHDA- 2023/12/22 12:44
PMCR- 2023/11/27
CRDT- 2023/12/22 09:17
PHST- 2023/10/28 00:00 [received]
PHST- 2023/11/20 00:00 [revised]
PHST- 2023/11/24 00:00 [accepted]
PHST- 2023/12/22 12:44 [medline]
PHST- 2023/12/22 12:43 [pubmed]
PHST- 2023/12/22 09:17 [entrez]
PHST- 2023/11/27 00:00 [pmc-release]
AID - membranes13120888 [pii]
AID - membranes-13-00888 [pii]
AID - 10.3390/membranes13120888 [doi]
PST - epublish
SO  - Membranes (Basel). 2023 Nov 27;13(12):888. doi: 10.3390/membranes13120888.