Sıfır Değerlikli Mangan ve Ultrases ile Nitratın Denitrifikasyonu

Yıl 2019, Cilt: 5 Sayı: 1, 32 - 48, 30.05.2019

Burcu İleri , Özge Terzioğlu Yasemin Çiçi

https://doi.org/10.28979/comufbed.529912

Öz

Bu çalışmada, sıfır değerlikli
mangan (Mn⁰) partikülü ve ultrases prosesinin (US) tekli ve birleşik
(US/Mn⁰) uygulamaları sentetik ve yeraltı suyunda bulunan nitratın
indirgenmesinde denenmiş ve partikül dozu (0.5, 0.75, 1, 1.5 ve 2 gr) ile reaksiyon
süresinin (0-60 dk) etkisi araştırılmıştır. Ultrases prosesi tek başına
uygulandığında nitrat (NO₃^-)
giderimine etkisi az iken; Mn⁰ dozu arttıkça NO₃^- giderimi yükselmiştir. Birleşik US/Mn⁰
uygulamasında ise ultrases etkisiyle Mn⁰ partiküllerinin
denitrifikasyon kapasitesini arttırdığı belirlenmiştir. Sadece Mn⁰
ile 60 dk sonunda % 70 civarında bir NO₃^-
giderimi gerçekleşirken, aynı deneysel şartlarda ultrasonik mekanik kuvvet
etkisi ile 30 dk içerisinde % 95
civarında bir NO₃^-
giderimi elde edilmiştir. US/Mn⁰ ile nitratın indirgenmesi sonucu nitrit
(NO₂^-) ve amonyum/amonyak (NH₄⁺/NH₃)
denitrifikasyon bileşikleri az miktarda oluşurken, azot gazına (N₂) dönüşüm
oranının arttığı tespit edilmiştir.

Anahtar Kelimeler

Denitrifikasyon, nitrat, sıfır değerlikli mangan, ultrases

Kaynakça

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