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.

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 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 Long-lasting, monovalent-selective capacitive deionization electrodes

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Eric N. Guyes ◽  
Amit N. Shocron ◽  
Yinke Chen ◽  
Charles E. Diesendruck ◽  
Matthew E. Suss
Keyword(s):  
Water Treatment ◽  
Ionic Conductivity ◽  
Ion Selectivity ◽  
Single Step ◽  
Carbon Electrodes ◽  
Capacitive Deionization ◽  
Treatment Technologies ◽  
Porous Carbon Electrodes ◽  
Monovalent Ion ◽  
Direct Use

AbstractEmerging water purification applications often require tunable and ion-selective technologies. For example, when treating water for direct use in irrigation, often monovalent Na+ must be removed preferentially over divalent minerals, such as Ca2+, to reduce both ionic conductivity and sodium adsorption ratio (SAR). Conventional membrane-based water treatment technologies are either largely non-selective or not dynamically tunable. Capacitive deionization (CDI) is an emerging membraneless technology that employs inexpensive and widely available activated carbon electrodes as the active element. We here show that a CDI cell leveraging sulfonated cathodes can deliver long-lasting, tunable monovalent ion selectivity. For feedwaters containing Na+ and Ca2+, our cell achieves a Na+/Ca2+ separation factor of up to 1.6. To demonstrate the cell longevity, we show that monovalent selectivity is retained over 1000 charge–discharge cycles, the highest cycle life achieved for a membraneless CDI cell with porous carbon electrodes to our knowledge, while requiring an energy consumption of ~0.38 kWh/m3 of treated water. Furthermore, we show substantial and simultaneous reductions of ionic conductivity and SAR, such as from 1.75 to 0.69 mS/cm and 19.8 to 13.3, respectively, demonstrating the potential of such a system towards single-step water treatment of brackish and wastewaters for direct use in irrigation.

scholarly journals Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview

RSC Advances ◽  
2021 ◽  
Vol 11 (58) ◽  
pp. 36528-36553
Author(s):  
Ahmad K. Badawi ◽  
M. Abd Elkodous ◽  
Gomaa A. M. Ali
Keyword(s):  
Water Treatment ◽  
Metal Ions ◽  
Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Recent Advances ◽  
Metal Ions Removal

Various materials including waste precursors used as adsorbents for water treatment (dyes and metal ions removal).

scholarly journals Nickel hexacyanoferrate electrodes for high mono/divalent ion-selectivity in capacitive deionization

Desalination ◽  
2020 ◽  
Vol 481 ◽  
pp. 114346 ◽  
Author(s):  
Kaustub Singh ◽  
Zexin Qian ◽  
P.M. Biesheuvel ◽  
Han Zuilhof ◽  
Slawomir Porada ◽  
...  
Keyword(s):  
Ion Selectivity ◽  
Capacitive Deionization ◽  
Nickel Hexacyanoferrate

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

scholarly journals Electrospun Nanomaterials for Energy Applications: Recent Advances

2019 ◽  
Vol 9 (6) ◽  
pp. 1049 ◽  
Author(s):  
Saveria Santangelo
Keyword(s):  
Large Scale ◽  
Three Dimensional ◽  
Cost Effective ◽  
Water Desalination ◽  
High Porosity ◽  
Capacitive Deionization ◽  
Fiber Networks ◽  
Energy Applications ◽  
Recent Advances ◽  
Highly Porous

Electrospinning is a simple, versatile, cost-effective, and scalable technique for the growth of highly porous nanofibers. These nanostructures, featured by high aspect ratio, may exhibit a large variety of different sizes, morphologies, composition, and physicochemical properties. By proper post-spinning heat treatment(s), self-standing fibrous mats can also be produced. Large surface area and high porosity make electrospun nanomaterials (both fibers and three-dimensional fiber networks) particularly suitable to numerous energy-related applications. Relevant results and recent advances achieved by their use in rechargeable lithium- and sodium-ion batteries, redox flow batteries, metal-air batteries, supercapacitors, reactors for water desalination via capacitive deionization and for hydrogen production by water splitting, as well as nanogenerators for energy harvesting, and textiles for energy saving will be presented and the future prospects for the large-scale application of electrospun nanomaterials will be discussed.

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.

A review on free-standing electrodes for energy-effective desalination: Recent advances and perspectives in capacitive deionization

Desalination ◽  
2020 ◽  
Vol 493 ◽  
pp. 114662
Author(s):  
Sareh Vafakhah ◽  
Zahra Beiramzadeh ◽  
Mohsen Saeedikhani ◽  
Hui Ying Yang
Keyword(s):  
Capacitive Deionization ◽  
Free Standing ◽  
Recent Advances
Sign in / Sign up

Export Citation Format

Share Document