Photocatalytic Oxidation and Heterogeneous Fenton Applications With Paper Industry Wastewater

Abstract

Nowadays, leaving industrial wastewater into receiving environment causes serious environmental problems. In this study, experimental studies on color and chemical oxygen demand (COD) removal of paper industrial wastewater were carried out. In this context, heterogeneous Fenton and photocatalytic oxidation processes were applied and removal efficiencies were compared. The Fe(III)/MnO2 catalyst containing 8% w/w of iron ion was synthesized to be used in experimental studies. The effects of parameters such as pH, catalyst amount, hydrogen peroxide concentration and reaction time were investigated. At the end of the experimental studies, 90% color and 55% COD removal efficiencies were obtained in heterogeneous Fenton process after 120 minutes reaction time under optimum conditions. After 60 minutes reaction time under the same optimum conditions, 97% color and 91% COD removal efficiencies were achieved in photocatalytic oxidation process.

Comparative study of degradation of pharmaceutical and personal care products in wastewater by advanced oxidation processes: Fenton, UV/H2O2, UV/TiO2

“…Although almost complete removal was also observed at the 0.28 mM H 2 O 2 dose, it was not preferred due to the possibility of scavenging radicals and the formation of a radical with a lower oxidation potential ( • HO 2 ) with an increase in H 2 O 2 concentration. [ 40 ] Additionally, TRC is a chlorinated phenoxyphenol and turns into a neutral phenolic form when p K a > pH. In this case, it is in molecular structure and photostable.…”