Poly(arylene alkylene)-Based Ion-Exchange Polymers for Enhancing Capacitive Desalination Capacity and Electrode Stability

Xu, Yingsheng; Jiang, Tao; Zhang, Xinyuan; Cao, Guoxin; Yang, Lv; Wei, Haibing; Zhou, Hongjian

doi:10.1021/acs.iecr.3c02238

Cited by 8 publications

(2 citation statements)

References 41 publications

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“… , The chemical structures of the poly(phenylene alkylene) AEM and CEM are shown in Figure . There has only been one report investing the class of poly(phenylene alkylene) ionomers for MCDI . This recent article investigated poly(fluorene) backbone anion exchange ionomer and cation exchange ionomer variants and compared the electrode salt capacity and charge efficiency of CDI and MCDI with commercial ASTOM IEMs, and MCDI where the poly(fluorene) ionomers coated the porous electrodes.…”

Section: Resultsmentioning

confidence: 99%

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Shrimant,

Kulkarni,

Hasan

et al. 2024

ACS Appl. Mater. Interfaces

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Plasma protein therapies are used by millions of people across the globe to treat a litany of diseases and serious medical conditions. One challenge in the manufacture of plasma protein therapies is the removal of salt ions (e.g., sodium, phosphate, and chloride) from the protein solution. The conventional approach to remove salt ions is the use of diafiltration membranes (e.g., tangential flow filtration) and ion-exchange chromatography. However, the ion-exchange resins within the chromatographic column as well as filtration membranes are subject to fouling by the plasma protein. In this work, we investigate the membrane capacitive deionization (MCDI) as an alternative separation platform for removing ions from plasma protein solutions with negligible protein loss. MCDI has been previously deployed for brackish water desalination, nutrient recovery, mineral recovery, and removal of pollutants from water. However, this is the first time this technique has been applied for removing 28% of ions (sodium, chloride, and phosphate) from human serum albumin solutions with less than 3% protein loss from the process stream. Furthermore, the MCDI experiments utilized highly conductive poly(phenylene alkylene)based ion exchange membranes (IEMs). These IEMs combined with ionomer-coated nylon meshes in the spacer channel ameliorate Ohmic resistances in MCDI improving the energy efficiency. Overall, we envision MCDI as an effective separation platform in biopharmaceutical manufacturing for deionizing plasma protein solutions and other pharmaceutical formulations without a loss of active pharmaceutical ingredients.

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Section: Resultsmentioning

confidence: 99%

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Shrimant,

Kulkarni,

Hasan

et al. 2024

ACS Appl. Mater. Interfaces

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“…Specifically, the maximum Li + intercalation rates of LMO||CoAl-LDO and LMO||AC/AEM were 0.57 mmol g −1 min −1 and 0.37 mmol g −1 min −1 , respectively. The slower Li + intercalation rate of LMO||AC/AEM is principally due to the interfacial resistance between the membrane and the electrode surface. , Thus, considering the membrane-free conditions, LMO||CoAl-LDO could achieve a higher Li + intercalation rate. To evaluate the Li + intercalation cycle stability, the continuous charge/discharge cycles of LMO||CoAl-LDO and LMO||AC/AEM are investigated in Figure (d).…”

Section: Resultsmentioning

confidence: 99%

Layered Double Oxide as a Cl⁻ Selective Anode for High-Performance Electrochemical Lithium Extraction

Qiao,

Li,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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The widespread application of lithium-ion batteries and the rapid development of electric vehicles have increased the demand for lithium resources. Electrochemical lithium extraction has been proven to be an effective method for Li + recovery from brine due to its environmental friendliness and excellent selectivity. In a conventional configuration, LiMn 2 O 4 (LMO)||activated carbon (AC)/anion exchange membrane (AEM), AEM is essential to avoid the adsorption of Li + onto the AC anode during Cl − desorbing. Here, we propose that a layered double oxide (LDO) serves as an anode material with high Cl − selectivity. CoAl-LDO was synthesized by a one-pot hydrothermal method, followed by heat treatment, and used as an anode with LMO as a cathode (LMO|| CoAl-LDO). The Li + intercalation capacity of LMO||CoAl-LDO reached 1.35 mmol g −1 at 1.2 V with a maximum rate of 0.57 mmol g −1 min −1 and a capacity retention of 70.83% after 20 cycles, higher than those of LMO||AC/AEM (1.12 mmol g −1 , 0.37 mmol g −1 min −1 , 35.48%, respectively). Moreover, the selectivity of Li + in a Li + /Mg 2+ binary solution (1:5) was investigated, showing that the separation factor of Li + /Mg 2+ in LMO||CoAl-LDO (2.67) was close to that in LMO||AC/AEM (2.98). In situ Raman characterization was conducted, showing that the high Cl − selectivity and good Cl − capacity were induced by the anion intercalation mechanism of CoAl-LDO. In addition, CoAl-LDO coated with AEM further enhanced the Cl − selectivity and capacity, which assisted the Li + extraction performance of LMO||CoAl-LDO with 1.80 mmol g −1 Li + intercalation capacity. We believe that CoAl-LDO is a promising anode material for electrochemical lithium extraction.

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Constructing ionic highway in capacitive deionization via integrated electrodes based on bifunctional ionomer

Jiang,

Zhou,

et al. 2024

Desalination

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Poly(arylene alkylene)-Based Ion-Exchange Polymers for Enhancing Capacitive Desalination Capacity and Electrode Stability

Cited by 8 publications

References 41 publications

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Layered Double Oxide as a Cl⁻ Selective Anode for High-Performance Electrochemical Lithium Extraction

Constructing ionic highway in capacitive deionization via integrated electrodes based on bifunctional ionomer

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Poly(arylene alkylene)-Based Ion-Exchange Polymers for Enhancing Capacitive Desalination Capacity and Electrode Stability

Cited by 8 publications

References 41 publications

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Desalting Plasma Protein Solutions by Membrane Capacitive Deionization

Layered Double Oxide as a Cl− Selective Anode for High-Performance Electrochemical Lithium Extraction

Constructing ionic highway in capacitive deionization via integrated electrodes based on bifunctional ionomer

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Layered Double Oxide as a Cl⁻ Selective Anode for High-Performance Electrochemical Lithium Extraction