Assessment of Photo-Fenton Process for The Removal Of Pesticide from Wastewater
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Date
2019-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
The main purpose of this work was to study assessment of photo-Fenton process (Fe
/H2O2/UV)
for the removal of pesticide from wastewater. Synthetic wastewater from 2,4Dichlorophenoxyacetic
was
prepared
and
characterized
for
its
organic
matter
content
and
also
it
PH
and
turbidity
which
has
a
significant
effect
on
the
degradation
process.
Box-Benkhen
design
response-surface
methodology was developed to optimize photo-Fenton degradation of 2,4Dichlorophenoxyacetic
in which UV light radiation was used as a source of light. The three
variables considered in Box-Benkhen design model included initial 2,4-Dichlorophenoxyacetic
[2,4-D], hydrogen peroxide [H2O2] and Ferrous iron [Fe
2+
] concentrations. The removal
efficiency was expressed in terms of total organic carbon (TOC) and chemical oxygen demand
(COD) percentage removal. The optimum values of 94.7 mg/L 2,4-D, 22.78 mg/L Fe
2+
, 156.4 mg/L
H2O2 were obtained by optimizing the variables using Box-Benkhen design that the data was
analyzed after carrying out each experiment for 2 hours at room temperature. The photo-Fenton
process led to 85% TOC removal and 96% COD removal thereby showing the effectiveness of
using photo-Fenton process for the removal of pesticide from wastewater.
Description
Keywords
wastewater, photo-Fenton, pesticide