Journals / Ekoloji / 2007 / Cilt: 16 - Sayı: 64

UV/H2O2 disinfection of humic substance containing surface waters

Hümik madde içeren yüzeysel suların UV/H2O2 ile dezenfeksiyonu

Journal
Ekoloji
Pages
21–28
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results showed that the efficiency of bacterial reduction was reduced significantly with increasing concentrations of humic acid in water.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:UV/H2O2 disinfection of surface water containing humic substances was investigated.
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Key Findings & Data:UV radiation was applied at doses of 68, 136, 204, 272, 341, 409, 545, 681 mWs/cm2 to water samples containing various concentrations of humic acid [0-10 mg Dissolved Organic Carbon (DOC)/L] and 0.125 mg/L hydrogen peroxide.
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Conclusion & Impact:Results showed that the efficiency of bacterial reduction was reduced significantly with increasing concentrations of humic acid in water.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

UV/H2O2 disinfection of surface water containing humic substances was investigated. UV radiation was applied at doses of 68, 136, 204, 272, 341, 409, 545, 681 mWs/cm2 to water samples containing various concentrations of humic acid [0-10 mg Dissolved Organic Carbon (DOC)/L] and 0.125 mg/L hydrogen peroxide. Total coliform numbers were determined after UV radiation and dark incubation of the samples. Results showed that the efficiency of bacterial reduction was reduced significantly with increasing concentrations of humic acid in water. Inactivation coefficients (k) for waters containing 0, 1, 5 ve 10 mg DOC/L humic acid were determined to be 0.0232, 0.0162, 0.0151 ve 0.0135, respectively according to Chick-Watson Model. Results of regrowth experiments indicated that free oxygen radicals produced by H2O2 decomposition were also effective for the inactivation of bacteria after the completion of disinfection process.

Özet

Bu çalışmada, humik madde içeren yüzeysel suların UV/H2O2 ile dezenfeksiyonu incelenmiştir. Çeşitli konsantrasyonlarda [0-10 mg Çözünmüş Organik Karbon (ÇOK)/L] hümik asit ve 0,125 mg/L hidrojen peroksit içeren sulara 68, 136, 204, 272, 341, 409, 545, 681 mWs/cm2 dozlarında UV radyasyonu uygulanmıştır. UV radyasyonu sonrasında ve bunu takip eden karanlık inkübasyonu sonrasında toplam koliform sayıları belirlenmiştir. Sonuçlar bakteriyel giderim veriminin sudaki hümik asit konsantrasyonunun artışı ile önemli oranda azaldığını göstermiştir. 0, 1, 5 ve 10 mg ÇOK/L hümik asit içeren sular için inaktivasyon katsayıları (k) Chick-Watson Modeline göre 0,0232, 0,0162, 0,0151 ve 0,0135 olarak belirlenmiştir. Yeniden çoğalma testlerinin sonuçları H2O2 dekompozisyonu ile meydana gelen serbest oksijen radikallerinin dezenfeksiyon prosesi sonrasında da bakterilerin inaktivasyonunda etkili olduğunu göstermiştir.

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Cite This Article

TEKSOY, A., ALKAN, U., ATEŞLİ, A. (2022). UV/H2O2 disinfection of humic substance containing surface waters. Ekoloji, Cilt: 16 - Sayı: 64, 21–28. https://ajindex.com/articles/499236

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