Ayçiçek yağı endüstrisi atık sularının koagülasyon-flokülasyon ve elektro-Fenton yöntemleriyle arıtılması

Year 2021, Volume: 36 Issue: 1, 275 - 290, 01.12.2020

Baran Özyurt Şule Camcıoğlu , Toprak Karatokuş Ceren Yüksek Hale Hapoğlu

https://doi.org/10.17341/gazimmfd.553847

Cited By: 1

Abstract

Bitkisel yağların üretimi sırasında oluşan yüksek miktarda organik
kirlilik içeren endüstriyel atık sular, alıcı ortamlara deşarj edilmeden önce arıtılmalıdır.
Yapılan çalışmada koagülasyon-flokülasyon ve elektro-Fenton yöntemleri ve iki
yöntemin ardışık işletimi ile ayçiçek yağı endüstrisi atık suyunun arıtımı
gerçekleştirilmiştir. Koagülasyon-flokülasyon yöntemiyle arıtımda en uygun
koagülant türü ve derişimi, flokülant derişimi ve pH’ın belirlenmesi amacıyla PACl
ve Al₂(SO₄)₃.18H₂O koagülantları kullanılarak
4, 10, 16 g/L değerlerinde, flokülant olarak anyonik ticari polielektrolit
kullanılarak 0,06, 0,18 ve 0,3 g/L değerlerinde ve pH 4, 6, 8 koşullarında
çalışmalar gerçekleştirilmiştir. Elde edilen en uygun değerlerde (10 g/L Al₂(SO₄)₃.18H₂O,
0,06 g/L flokülant, pH 6) yapılan çalışmada %96,57 kimyasal oksijen ihtiyacı
(KOİ) giderimine ulaşılmıştır. Elektro-Fenton yöntemi ile yapılan arıtım
çalışmalarında 1, 2,5, 4 A akım şiddeti, 4,5, 9, 18 g/L FeSO₄.7H₂O
derişimi, 32,71, 81,77, 130,84 mM H₂O₂ derişimi, 3, 5,5,
8 pH değerleri çalışılmış ve en uygun işletim koşulları 1 A akım şiddeti, 9 g/L
FeSO₄.7H₂O, 130,84 mM H₂O₂, 6,06 H₂O₂/Fe²⁺
mol oranı ve pH 3 olarak belirlenmiştir. Bu koşullarda yapılan çalışmada
%98,50 KOİ giderimi ve 0,2231 kWh/kg KOİ_g enerji tüketimi elde
edilmiştir. Belirlenen en uygun işletim koşullarında ardışık koagülasyon-flokülasyon-elektro-Fenton
yöntemi ile yapılan arıtımda ise 15 min sonunda %98,42 KOİ giderimi ve 2,15 kWh/kg KOİ_g enerji
tüketimi değerlerine ulaşılmıştır.

Keywords

Ayçiçek yağı endüstrisi atık suyu, koagülasyon-flokülasyon, elektro-Fenton, grafit elektrot

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