scholarly journals Simplified Prediction of Ion Removal in Capacitive Deionization of Multi-Ion Solutions

Langmuir ◽  
2020 ◽  
Vol 36 (5) ◽  
pp. 1338-1344 ◽  
Author(s):  
Johan Nordstrand ◽  
Joydeep Dutta
Keyword(s):  
Capacitive Deionization ◽  
Ion Removal

scholarly journals Development of an Ion Removal Technique Based on Capacitive Deionization for Treatment of Rinse Water from Incineration Ash

2014 ◽  
Vol 12 (3) ◽  
pp. 259-274 ◽  
Author(s):  
Ginno Lizano ANDRES ◽  
Nobuyuki YANO ◽  
Yuuki SHIYOUKEI ◽  
Yoshinobu YOSHIHARA ◽  
Masakazu TANAHASHI
Keyword(s):  
Capacitive Deionization ◽  
Ion Removal ◽  
Rinse Water ◽  
Removal Technique

Removal of nitrate using activated carbon-based electrodes for capacitive deionization

2018 ◽  
Vol 18 (6) ◽  
pp. 2028-2034 ◽  
Author(s):  
Shaojie Jiang ◽  
Hongwu Wang ◽  
Guanquan Xiong ◽  
Xinlei Wang ◽  
Siying Tan
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Flow Rate ◽  
Nitrate Removal ◽  
Cell Voltage ◽  
Solution Concentration ◽  
Capacitive Deionization ◽  
Optimal Conditions ◽  
Ion Removal ◽  
Initial Solution Concentration

Abstract The removal performance of nitrate using capacitive deionization (CDI) of activated carbon (AC)-based electrodes were studied. The AC electrode was prepared and the effect of cell voltage, flow rate and initial solution concentration on ion removal were investigated. Furthermore, the AC was modified with phosphoric acid (ACP) and the surface structure of AC and ACP were analyzed. The results showed that the specific surface area of AC increased by 10.71% after the modification. The mesopore ratio and micropore ratio increased by 14.69% and 24.06%, respectively. The optimal conditions of AC electrode was a voltage of 1.4 V and flow rate of 20 mL/min while the ACP electrode was a voltage of 1.4 V and flow rate of 10 mL/min. The electrosorption capacity of ACP electrode was improved and the unit of electrosorption load was high to 19.28 mg/L. For the AC or ACP electrode, the nitrate removal efficiency decreases with the increase in the initial feed solutions, but the unit electrosorption load gradually increased with the improvement of initial feed solutions' concentration and the ACP electrode was superior to the AC electrode. Therefore, the ACP electrode would be suitable for the application of CDI on the nitrate removal.

Improved chlorine and chromium ion removal from leather processing wastewater by biocharcoal-based capacitive deionization

2020 ◽  
Vol 233 ◽  
pp. 116024 ◽  
Author(s):  
Zhaoyang Du ◽  
Weijun Tian ◽  
Kaili Qiao ◽  
Jing Zhao ◽  
Liang Wang ◽  
...  
Keyword(s):  
Capacitive Deionization ◽  
Chromium Ion ◽  
Ion Removal ◽  
Leather Processing

Battery Electrode Materials with Omnivalent Cation Storage for Fast and Charge-Efficient Ion Removal of Asymmetric Capacitive Deionization

2018 ◽  
Vol 28 (35) ◽  
pp. 1802665 ◽  
Author(s):  
Seungyeon Choi ◽  
Barsa Chang ◽  
Seoni Kim ◽  
Jiho Lee ◽  
Jeyong Yoon ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Capacitive Deionization ◽  
Ion Removal ◽  
Battery Electrode

Emerging investigator series: capacitive deionization for selective removal of nitrate and perchlorate: impacts of ion selectivity and operating constraints on treatment costs

2020 ◽  
Vol 6 (4) ◽  
pp. 925-934 ◽  
Author(s):  
Steven Hand ◽  
Roland D. Cusick
Keyword(s):  
Water Treatment ◽  
Ion Selectivity ◽  
Treatment Costs ◽  
Selective Removal ◽  
Capacitive Deionization ◽  
Ion Removal ◽  
Operating Constraints

A parameterized costing model was used to investigate the impacts of ion selectivity on water treatment price for selective ion removal with capacitive deionization (CDI) systems.

scholarly journals MXenes as Flow Electrodes for Capacitive Deionization of Wastewater

2020 ◽  
Author(s):  
Naqsh E. Mansoor
Keyword(s):  
Transition Metal ◽  
Applied Voltage ◽  
Energy Efficient ◽  
Performance Metrics ◽  
Industrial Applications ◽  
Operating Conditions ◽  
Water Remediation ◽  
Capacitive Deionization ◽  
Ion Removal ◽  
Ionic Impurities

The energy-water nexus poses an integrated research challenge, while opening up an opportunity space for the development of energy efficient technologies for water remediation. Capacitive Deionization (CDI) is an upcoming reclamation technology that uses a small applied voltage applied across electrodes to electrophoretically remove dissolved ionic impurities from wastewater streams. Similar to a supercapacitor, the ions are stored in the electric double layer of the electrodes. Reversing the polarity of applied voltage enables recovery of the removed ionic impurities, allowing for recycling and reuse. Simultaneous materials recovery and water reclamation makes CDI energy efficient and resource conservative, with potential to scale it up for industrial applications. The efficiency of the technology depends on the architectural design of the CDI cell, control of operating conditions, and the nature of the electrodes used. In this project we report on the performance of Ti3C2Tx MXenes flow electrodes in a CDI cell design. MXenes are a novel class of two-dimensional (2D) transition metal carbides, nitrides and carbonitrides with the general formula Mn+1XnTx where M is an early transition metal, X is carbon and/or nitrogen, Tx represents the surface terminations. Ti3C2Tx MXenes synthesized at Boise State, were employed as a flow electrode solution in an established CDI cell for targeted and selective ion removal. Performance metrics of achieved adsorption capacity, ion removal efficiency, regeneration efficiency, energy consumption, and charge efficiency, exceed those of currently prevalent electrode systems. In addition, rheological properties of the Ti3C2Tx MXenes colloidal solution were evaluated. This work establishes the deionization performance of Ti3C2Tx MXene based flow electrodes while providing further insight towards understanding the effect of structure and surface functionalization on the resultant deionization efficiency.

scholarly journals Recent advances in ion selectivity with capacitive deionization

2021 ◽  
Author(s):  
J. G. Gamaethiralalage ◽  
K. Singh ◽  
S. Sahin ◽  
J. Yoon ◽  
M. Elimelech ◽  
...  
Keyword(s):  
Ion Selectivity ◽  
Comprehensive Analysis ◽  
Capacitive Deionization ◽  
Ion Removal ◽  
Recent Advances

Fishing ions: this review provides a comprehensive analysis of different approaches in utilizing capacitive deionization (CDI) for selective ion separations and ion removal.

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