scholarly journals Chitosan-based activated carbon as economic and efficient sustainable material for capacitive deionization of low salinity water

RSC Advances ◽  
2019 ◽  
Vol 9 (46) ◽  
pp. 26676-26684 ◽  
Author(s):  
Qinghao Wu ◽  
Dawei Liang ◽  
Xiumei Ma ◽  
Shanfu Lu ◽  
Yan Xiang
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Capacitive Deionization ◽  
Sustainable Material ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Salinity Water

Chitosan was selected as a carbonaceous precursor to prepare high-performance chitosan-based activated carbon (CTS-AC) for CDI electrode.

scholarly journals Tunable membranes incorporating artificial water channels for high-performance brackish/low-salinity water reverse osmosis desalination

2021 ◽  
Vol 118 (37) ◽  
pp. e2022200118
Author(s):  
Maria Di Vincenzo ◽  
Alberto Tiraferri ◽  
Valentina-Elena Musteata ◽  
Stefan Chisca ◽  
Mihai Deleanu ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
High Performance ◽  
Applied Pressure ◽  
Cross Flow ◽  
Water Channels ◽  
Low Salinity ◽  
Cross Flow Filtration ◽  
Low Salinity Water ◽  
Salinity Water ◽  
Artificial Water

Membrane-based technologies have a tremendous role in water purification and desalination. Inspired by biological proteins, artificial water channels (AWCs) have been proposed to overcome the permeability/selectivity trade-off of desalination processes. Promising strategies exploiting the AWC with angstrom-scale selectivity have revealed their impressive performances when embedded in bilayer membranes. Herein, we demonstrate that self-assembled imidazole-quartet (I-quartet) AWCs are macroscopically incorporated within industrially relevant reverse osmosis membranes. In particular, we explore the best combination between I-quartet AWC and m-phenylenediamine (MPD) monomer to achieve a seamless incorporation of AWC in a defect-free polyamide membrane. The performance of the membranes is evaluated by cross-flow filtration under real reverse osmosis conditions (15 to 20 bar of applied pressure) by filtration of brackish feed streams. The optimized bioinspired membranes achieve an unprecedented improvement, resulting in more than twice (up to 6.9 L⋅m−2⋅h−1⋅bar−1) water permeance of analogous commercial membranes, while maintaining excellent NaCl rejection (>99.5%). They show also excellent performance in the purification of low-salinity water under low-pressure conditions (6 bar of applied pressure) with fluxes up to 35 L⋅m−2⋅h−1 and 97.5 to 99.3% observed rejection.

High Performance Hybrid Capacitive Deionization with Ag-coated Activated Carbon Electrode

2021 ◽  
Author(s):  
Hongsik Yoon ◽  
Jiho Lee ◽  
Taijin Min ◽  
Gunhee Lee ◽  
Minsub Oh
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Industrial Application ◽  
High Performance ◽  
Treatment System ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Water Treatment System

Capacitive deionization (CDI) has been highlighted as a promising electrochemical water treatment system. However, the low deionization capacity of CDI electrodes has been a major limitation for its industrial application,...

Single-Well Chemical-Tracer Modeling of Low-Salinity-Water Injection in Carbonates

2017 ◽  
Vol 20 (01) ◽  
pp. 118-133 ◽  
Author(s):  
Emad W. Al-Shalabi ◽  
Haishan Luo ◽  
Mojdeh Delshad ◽  
Kamy Sepehrnoori
Keyword(s):  
Water Injection ◽  
Low Salinity ◽  
Chemical Tracer ◽  
Low Salinity Water ◽  
Single Well ◽  
Salinity Water ◽  
Low Salinity Water Injection
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