FOTOBİYOKATALİZ YÖNTEMİ KULLANILARAK PESTİSİT GİDERİMİ-DERLEME ÇALIŞMASI

Yıl 2019, , 675 - 688, 31.07.2019

Gamze Doğdu Okçu , Hatice Eser Ökten Arda Yalçuk

https://doi.org/10.28948/ngumuh.598101

Cited By: 1

Öz

   Aromatik yapılı, çevresel koşullarda
zorlukla parçalanabilen, kararlı organik kirleticilerin başında gelen
pestisitler, atmosfere, su sistemlerine, besin zincirine taşınmakta, asıl
kaynaklarından çok uzak noktalarda birikebilmektedir. Konvansiyonel arıtma
proseslerinin pestisitlerin gideriminde yetersiz kalmasından dolayı kirletilmiş
sulardan uzaklaştırılmaları için yeni arıtım teknolojilerine ihtiyaç
duyulmaktadır. Son yıllarda, su sistemlerinden konvansiyonel tekniklerle arıtılamayan
kirleticilerin giderilmesinde birleşik fotokatalitik-biyolojik arıtma umut
verici bir alternatiftir: Fotokataliz toksik organikleri biyolojik olarak
parçalanabilir ürünlere dönüştürürken, biyolojik parçalama ürünlerini verimli
şekilde mineralize eder. Ön arıtma sırasında gereksiz kimyasal ve %60 oranında
enerji sarfiyatından kaçınmak amacıyla ön arıtma basamağında mineralizasyon
yüzdesi minimalize edilerek çalışma maliyeti düşürülür. Literatüre göre yalnız
kimyasal prosesle yaklaşık %80 pestisit parçalanması ve %50’den az
mineralizasyon gözlemlenebilirken hibrit reaktör sistemiyle tamamen parçalanma
ve yaklaşık %90 pestisit mineralizasyonu elde edilebilmektedir. Bu derlemenin
amacı, fotobiyokataliz işleminin, bireysel fotokataliz ve/veya biyolojik arıtma
yöntemlerine göre pestisit giderim koşulları kapsamında, temellerini,
mekanizmalarını ve literatürde yer alan güncel çalışmaları ele almak ve
incelemektir.

Anahtar Kelimeler

Hibrit, ileri oksidasyon prosesleri (İOPs), kataliz işlemi, organik kirleticiler, yeni nesil su/atıksu arıtma yöntemleri

Teşekkür

Yazarlar, değerli desteklerinden dolayı Abant İzzet Baysal Üniversitesi Bilimsel Araştırma Projeleri Birimine (2016.09.02.1032 ve 2016.09.02.1033) sayılı projelerin desteği için teşekkür ederler. Ayrıca, yazarlar Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK), BİDEB’e (Bilim İnsanı Destekleme Daire Başkanlığı) 2228-B Yüksek Lisans Öğrencileri için Doktora Burs Programı kapsamında yazar Gamze Doğdu Okçu’yu desteklediğinden teşekkürü bir borç bilirler.

THE REVIEW STUDY ON REMOVAL OF PESTICIDES IN PHOTOCATALYSIS AND BIOLOGICAL TREATMENT HYBRID PROCESS

Öz

   Pesticides, which are aromatic, hardly degradable
under environmental conditions, leading to stable organic contaminants are
transported to the atmosphere, water systems, food chain, and can accumulate at
far distances from their original sources. Novel treatment technologies are
required to eliminate pesticides from contaminated waters due to
ineffectiveness of the conventional treatment processes for pesticide removals.
In recent years, combined photocatalytic-biological degradation is a promising
alternative to eliminate contaminants not treatable by conventional techniques
from water systems: Photocatalysis converts toxic organics into biodegradable
products, while biodegradation efficiently mineralizes the products. In order
to avoid unnecessary chemical and 60% energy consumption during pre-treatment,
the percentage mineralization in the pre-treatment step is minimized and the
operating cost is reduced. According to the literature, while only about 80%
pesticide degradation and less than 50% mineralization can be observed by the
chemical process, a completely degradation and about 90% pesticide
mineralization can be obtained with hybrid reactor system. The aim of this
review is to evaluate handling and examining fundamentals, mechanisms and
recent studies in the literature within scope of pesticide removal conditions
accordance with individual photocatalysis and/or biological treatment methods.

Anahtar Kelimeler

Hybrid, advanced oxidation processes (AOPs), catalysis process, organic pollutants, new generation water / wastewater treatment methods

Kaynakça

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