Fenol Çözeltisinin Farklı Elektrotlar Kullanılarak Elektrooksidasyonu

Bu çalışmada toksik aromatik bir bileşik olarak bilinen fenolün BDD (Boron Doped Diamond), Ti/Pt ve MMO(Mixed Metal Oksit) elektrotları (Ti/RuO2-TiO2, Ti/RuO2-IrO2, Ti/IrO2-Ta2O5, Ti/Pt-IrO2) ile mineralizasyonuaraştırıldı. Mineralizasyon seviyesinin belirlenmesi amacıyla deneylerin başında ve ilerleyen sürelerindeelektrooksidasyona tabi tutulan fenol çözeltisinden örnekler alınıp TOK (Toplam Organik Karbon) değerleriölçüldü. Akım yoğunluğunun giderme verimine etkisini araştırmak için ise reaktöre üç farklı akım yoğunluğu (25mA/cm2, 75 mA/cm2 ve 125 mA/cm2) uygulandı. Akım yoğunluğu artışı ile mineralizasyon veriminin arttığıgörüldü. 125 mA/cm2akım yoğunluğunda BDD anot 180. dakikadan itibaren %100 giderme verimlerine ulaştı.Deneyin başında düşük performans gösteren Pt elektrotun 300 dakikalık deney süresi sonunda % 84 lük gidermeverimi ile, % 72-79 aralığında verim gösteren MMO anotların performansını geçtiği belirlendi. Çalışmanınsonunda BDD elektrotun fenolün sulardan gideriminde diğer anotlardan daha iyi performans gösterdiği görüldü.

Electrooxidation of Phenol Solution Using Several Electrodes

In this study, mineralization of phenol, known as toxic aromatic compound, was investigated using BDD (Boron Doped Diamond), Ti/Pt and MMO (Mixed Metal Oxide) electrodes (Ti/RuO2-TiO2, Ti/RuO2-IrO2, Ti/IrO2-Ta2O5, Ti/Pt-IrO2). In order to determine the level of mineralization, samples were taken from the phenol solution subjected to electrooxidation at the beginning and at the during of the experiments and TOC (Total Organic Carbon) values were measured. Three different current densities (25 mA/cm2 , 75 mA/cm2 and 125 mA/cm2 ) were applied to the reactor to investigate the effect of current density on the removal efficiency. BDD anode reached 100% removal efficiency from 180 minutes at 125 mA/cm2 current density. At the beginning of the experiment, the low performance Pt electrode showed 84-% removal efficiency at the end of the 300 minutes test period. MMO anodes exceeding the yield range. At the end of the study, BDD electrode performed better than other anodes in the removal of phenol from water.

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