Advanced Oxidation Of Photographic
Processing Effluents On Novel Heterogeneous
Fibrous Catalyst
Author(s)
V. V. Ishtchenko, K. D. Huddersman & Z. Yang
Abstract
A novel heterogeneous catalyst, based on Fenton’s chemistry, was evaluated for
the treatment of KODAK Silver Bearing (SB) photographic processing effluents
with high Chemical Oxygen Demand (COD) value. The effect of temperature,
the nature and concentration of the oxidant (air and/or hydrogen peroxide), the
duration of catalytic treatment and the dilution factor of the effluent on the
reduction in COD were investigated. The catalyst and bubbled air (with no
hydrogen peroxide present) resulted in a significant COD reduction of the
effluent of 56 % after 18 hours of treatment at room temperature. It was found
that most of the COD reduction occurred within the first four hours of treatment.
Using air on its own, as oxidant was found to be sufficient, with only a slight
improvement on the addition of hydrogen peroxide. Ambient temperature was
preferred for the catalytic treatment of the effluent, as an increase in temperature
up to 600C led to less COD reduction which may arise from a change in the
redox potential of the active transition metal (Fe3+) complex or to the formation
of recalcitrant products.
Keywords: Advanced oxidation, photographic processing effluents,
heterogeneous catalyst, Fenton’s chemistry.
1 Introduction
The treatment of wastewater is one of the most important subjects in the area of
pollution control. In the monitoring and control of wastewaters, including trade
complex effluents, such as photographic processing effluents (PPE), chemical
oxygen demand (COD) is used as a measure of the extent of pollution as it is the
Keywords
Advanced oxidation, photographic processing effluents,
heterogeneous catalyst, Fenton’s chemistry.
Related Book
Other papers in this volume
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