MYH’de Farklı Katot Çözeltileri ile Atıksu Arıtımı ve Elektrik Üretimi

Year 2023, Volume: 25 Issue: 74, 513 - 523, 15.05.2023

Serkan Eker

https://doi.org/10.21205/deufmd.2023257420

Abstract

Eş zamanlı olarak atık sudan KOİ giderimi sağlanırken güç üretmek için katot ve anot odalarına sahip bir mikrobiyal yakıt hücresi (MYH), kullanılmıştır. Çeşitli oksidan çözeltileri kullanarak üretilen voltajı artırmak mümkündür. Anot bölümünde sentetik atık suyun (yaklaşık 1000 mg/L) anaerobik arıtımı sağlanırken, katot bölümü seyreltik hidrojen peroksit (300 mg/L), KMnO4 (300 mg/L), K2Cr2O7 (300 mg/L) ve Fenton reaktifi (H2O2/Fe(II), 300/20 mg/L) gibi çeşitli oksidan çözeltiler içermektedir. Aerobik atık su arıtma ve aralıklı ozon da katot bölümünde test edilmiştir. Katot bölümünün aralıklı ozonlanması ile en yüksek güç çıkışı (382 mW/m2) elde edilmiştir. Çalışma periyodunun sonunda, anot odasındaki KOİ konsantrasyonu 1170 mg/L'den 650 mg/L'ye düşmüş ve yaklaşık %45 KOİ giderimi sağlanmıştır. Katot odasında seyreltilmiş KMnO4 ve H2O2 çözeltilerinin kullanımı sırasıyla 35 ve 23 W/m2'lik yüksek güç yoğunlukları üretirken, diğer oksidanlar düşük güç yoğunlukları üretmiştir. 72 saatin sonunda, anaerobik bölümün KOİ içeriği 800 mg/L'den yaklaşık 333 mg/L'e düşmüş ve KMnO4 çözeltisi için yaklaşık %59 KOİ giderimi ile sonuçlanmıştır. Ozonlamanın yüksek maliyeti göz önüne alındığında, yüksek güç üretimi için katot odasında ya aerobik atıksu arıtımı ya da seyreltik KMnO4/H2O2 çözeltilerinin kullanılması önerilmektedir.

Keywords

Katot Çözümü, Elektrik Üretimi, Mikrobiyal Yakıt Hücresi (MFC), Atık su arıtma

Wastewater Treatment and Electricity Generation with Different Cathode Solutions in MFC

Abstract

A microbial fuel cell (MFC) with cathode and anode chambers was utilized to generate power while simultaneously removing COD from wastewater. By utilizing various oxidant solutions, it is possible to increase the generated voltage. The anode chamber was used for anaerobic treatment of synthetic wastewater (approximately 1000 mg/L), whereas the cathode chamber contained various oxidant solutions such as dilute hydrogen peroxide (300 mg/L), KMnO4 (300 mg/L), K2Cr2O7 (300 mg/L) and Fenton reagent (H2O2/Fe(II), 300/20 mg/L). Aerobic wastewater treatment and intermittent ozonation were also tested in the cathode chamber. With intermittent ozonation of the cathode chamber, the highest power output (382 mW/m2) was obtained. At the conclusion of the operation period, the COD concentration in the anode chamber decreased from 1170 mg/L to 650 mg/L, resulting in nearly 45% COD removal. In the cathode chamber, the use of diluted KMnO4 and H2O2 solutions produced high power densities of 35 and 23 W/m2, respectively, while the other oxidants produced low power densities. At the end of 72 hours, the COD content of the anaerobic chamber decreased from 800 mg/L to nearly 333 mg/L, resulting in nearly 59% COD removal for the KMnO4 solution. Considering the high cost of ozonation, it is recommended that either aerobic wastewater treatment or dilute KMnO4/H2O2 solutions should be used in the cathode chamber for high power generation.

Keywords

Cathode Solution; Electricity Generation; Microbial Fuel Cell (MFC); Wastewater Treatment, Cathode Solution; Electricity Generation; Microbial Fuel Cell (MFC); Wastewater Treatment, Cathode Solution, Electricity Generation, Microbial Fuel Cell (MFC, Wastewater Treatment

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