ENHANCING CAPACITIVE DEIONIZATION TECHNOLOGY AS AN EFFECTIVE METHOD FOR WATER TREATMENT

Abstract

In recent years, capacitive deionization (CDI) is reported as one of the emerging technologies developed with the purpose of water desalination. This work aims the use of supercapacitor electrodes for efficient removal of ions from water and contributes develepment of CDI technology. Towards the purpose, graphene based supercapacitor electrodes were developed and the use of these new materials for deionization purpose was explored in detail. The ion sorption behavior of the graphene electrodes developed from a commercially available graphene was analyzed at different electrical potentials and flow rates. Impact of operating parameters on sorption capacity was determined. At 20mL/min flow rate and 2.0V potential, the electrosorptive capacity of commercially available graphene electrodes could reach 12.5µmol/g. Our results showed that it is possible to develop supercapacitors from commercially available graphene material for the purpose of deionization

Keywords

• Deionization, Electrode, Graphene, Desalination, Supercapacitors

SU ARITIMI İÇİN ETKİLİ BİR YÖNTEM OLARAK KAPASİTİF DEİYONİZASYON TEKNOLOJİSİNİN GELİŞTİRİLMESİ

Abstract

: Son yıllarda, kapasitif deiyonizasyon (KDI) adı verilen ve kapasitörler aracılığı ile sudan iyonların giderilmesi amacıyla geliştirilen bu teknoloji su arıtımı için kullanılan yeni teknolojiler arasında öne çıkmaktadır. Bu çalışma kapsamında sudan iyonların giderilmesi için süperkapasitör elektrotların kullanılması ve KDI teknolojisinin geliştirilmesine katkıda bulunulması hedeflenmiştir. Bu amaç doğrultusunda, grafen bazlı süperkapasitör elektrotlar geliştirilmiş ve deiyonizasyon için bu yeni malzemelerin kullanımı detaylı olarak araştırılmıştır. Elektrotların iyon tutma özellikleri farklı elektrik potansiyelleri ve debilerde analiz edilmiştir. Elde edilen sonuçlara göre 20mL/dakika akış hızı ve 2,0V elektrik potansiyel uygulanarak geliştirilen grafen elektrotlar ile 12,5µmol/g iyon adsorpsiyon kapasitesine ulaşılmıştır. Sonuçlarımız doğrultusunda ticari olarak satın alınabilen grafen malzemesi ile sudan iyonların giderilmesi amacı ile elektrot üretmenin mümkün olduğu görülmüştür

Keywords

• Deiyonizasyon, Elektrot, Grafen, Tuz Giderimi, Süperkapasitörler

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