Sulardan Humik Asit Gideriminde Demir Kapli Zeolitle (DKZ) Katalitik Ozonlama
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Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Nevsehir Haci Bektas Veli Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Buçalismada hidrojen peroksit ve demir kapli zeolitle katalitik ozonlama ilehumik asit giderimi incelenmistir. Sonuçlar çözünmüs organik karbon (ÇOK),UV254, SUVA254 (254 nm'de (spesifik Ultraviyole absorbansi) ve renk absorbansi(A436) parametreleri ölçülerek degerlendirilmistir. 60 dakikada pH 6.5'da 10mg/L ozon konsantrasyonunda yalniz basina ozonlama ile %21,4 ÇOK giderimi eldeedilirken demir kapli zeolitle (0,75 mg/L) katalitik ozonlama deneylerinde %62ÇOK giderimi elde edilmis, katalitik ozonlama sistemine 1 mg/L hidrojenperoksit ilavesiyle de (%64,6 ile ) çok hafif bir artis gözlenmistir. katalitikozonlama yalniz basina ozonlamaya kiyasla UV absorplayan aromatik yapinin parçalanmasinakatkida bulunmus ve ÇOK giderimini de iyilestirmistir ancak katalitik ozonlamasistemlerinde ozon konsantrasyonunun artisi giderim veriminde kayda deger birartis saglamamistir.
Thisstudy examined the catalytic ozonation of humic acid (HA) with iron coatedzeolite (ICZ) and hydrogen peroxide (H2O2). The resultswere evaluated by DOC that specify organic matter, UV254, SUVA254(Specific Ultraviole Absorbance at 254 nm), and A436.When ozonation was used alone, DOC removal wasobtained as 21.4% at ozone concentration of 10 mg/L, pH 6.50 and oxidation timeof 60 min. DOC removal was found to increase by the the addition of H2O2in ozonation process. The use of ICZ as catalystincreased the decomposition of humic acid compared to ozonation alone. DOCremoval efficiency was obtained as 62.0% at pH 6.5, at catalyst loading of 0.75 g/L, and oxidationtime of 60 min. In catalytic ozonation process DOC removal slightlyincresed, when H2O2 was added. 64.6% DOC removal was obtainedat ozone concentration of 10 mg/L, catalyst dosage of 0.75mg/L and H2O2 concentration of 1mg/L. The catalytic ozonation enhanced thedestruction of the aromatic and UV-absorbing structures compared with ozonationalone. However, increasing ozone concentrations did not increase removalefficiencies significantly in the catalytic ozonation processes.
Thisstudy examined the catalytic ozonation of humic acid (HA) with iron coatedzeolite (ICZ) and hydrogen peroxide (H2O2). The resultswere evaluated by DOC that specify organic matter, UV254, SUVA254(Specific Ultraviole Absorbance at 254 nm), and A436.When ozonation was used alone, DOC removal wasobtained as 21.4% at ozone concentration of 10 mg/L, pH 6.50 and oxidation timeof 60 min. DOC removal was found to increase by the the addition of H2O2in ozonation process. The use of ICZ as catalystincreased the decomposition of humic acid compared to ozonation alone. DOCremoval efficiency was obtained as 62.0% at pH 6.5, at catalyst loading of 0.75 g/L, and oxidationtime of 60 min. In catalytic ozonation process DOC removal slightlyincresed, when H2O2 was added. 64.6% DOC removal was obtainedat ozone concentration of 10 mg/L, catalyst dosage of 0.75mg/L and H2O2 concentration of 1mg/L. The catalytic ozonation enhanced thedestruction of the aromatic and UV-absorbing structures compared with ozonationalone. However, increasing ozone concentrations did not increase removalefficiencies significantly in the catalytic ozonation processes.
Açıklama
Anahtar Kelimeler
Hümik asit, ozonlama, hidrojen peroksit, katalitik ozonlama
Kaynak
Nevsehir Bilim ve Teknoloji Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
6
