İstatistiksel yaklaşım kullanarak heterojen foto-Fenton benzeri oksidasyon ile atrazin arıtımı

Year 2019, Volume: 25 Issue: 6, 705 - 710, 25.11.2019

Ebru Çokay

Abstract

Atrazin
(ATZ) triazin herbisit olup tarım arazileri üzerindeki kontrol bitkileri için
kullanılmaktadır. Endokrin bozucu bir pestisit olarak sınıflandırılmaktadır.
ATZ, yarı ömrnün uzun olması, güneş ışığı ve mikroorganizma ile parçalanması
yavaş olması nedeni ile nedeniyle su ve toprakta kalıcıdır. Heterojen Fenton
prosesi ile kirletici maddelerin hidroksil radikali ile oksitlenmesi ve adsorpsiyonu
mümkün olup atrazinin parçalanması için etkili bir yöntemdir. Hidroksil radikal
oluşumu hidrojen peroksit ve manyetit kullanımı ile artırılabilmektedir. Bu
çalışmada atrazini giderebilmek için heterojen Foto-Fenton benzeri oksidasyon
yöntemi uygulanmıştır. İstatiksel yöntemi olan yüzey yanıt yönteminde; atrazin,
hidrojen peroksit ve manyetit konsantrasyonlarının bağımsız değişkenlerin
atrazin giderme verimi üzerindeki etkileri araştırılmıştır. Atrazinin tamamen
parçalanması bir saatlik reaksiyon süresinde gerçekleştirilmiştir. Optimum H₂O₂/Manyetit/ATZ
oranı 10/5/0.7 olarak belirlenmiştir ve optimum oranda atrazin giderme verimi
%97.5 olarak elde edilmiştir.

Keywords

Atrazin, Heterojen foto-fenton benzeri oksidasyon, Box-Behnken

Atrazine treatment with heterogeneous photo-Fenton like oxidation using statically approach

Abstract

Atrazine
(ATZ) which is a triazine herbicide can be used for the control weeds on
agricultural land and it is classified as an endocrine disrupting pesticide.
ATZ is persistent in water and soil due to its half-life and slow degradation
by means of sunlight and microorganism. The heterogeneous Fenton process is an
effective technique for degrading atrazine because of the oxidation and
adsorption of pollutants by hydroxyl radical. The hydroxyl radical formation
has been accelerated by addition of hydrogen peroxide and magnetite.
heterogeneous Photo-Fenton like oxidation were executed to remove atrazine in
this study. Effects of independent variables namely the concentrations of
atrazine, hydrogen peroxide and magnetite on atrazine removal efficiency were
investigated by using the surface response analysis. Atrazine degradation was
completely achieved with an hour. Optimal H₂O₂/Magnetite/ATZ
ratio resulting by optimum atrazine removal efficiency (97.5%) was determined
as 10/5/0.7, respectively.

Keywords

Atrazine, Heterogeneous photo-fenton like oxidation, Box-Behnken

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