info:eu-repo/semantics/conferenceProceedings
Disinfection and arsenic removal from water employing heterogeneous photocatalysis
Autor
LAURA GABRIELA CORDOVA VILLEGAS
MARIA TERESA ALARCON HERRERA
Resumen
removal
of
arsenic
and
disinfection
of
water
was
held
employing
heterogeneous
photocatalysis
with
UV
(solar
radiation)
and
ferric
chloride.
The
effect
of
many
parameters
was
studied:
pH,
time
of
exposure,
concentration
of
ion
Fe
(III),
concentration
of
As
(III).With
the
optimized
parameters
a
continuous
flow
system
was
implemented.
Optimal
conditions
were:
concentration
of
the
impregnating
solution
5%
TiO2,
[Fe
(III)]:
15.5
mg
/
L,
[As
(III)]:
160
μg
/
L,
exposure
time,
t:
140
minutes.
Achieving
removals
under
Mexican
and
international
(WHO)
law,
showing
a
removal
of
98%
for
arsenic
and
>
99%
in
disinfection.
It
was
demonstrated
that
the
process
of
heterogeneous
photocatalysis
in
the
presence
of
iron
salts
is
a
good
method
for
oxidizing
and
removing
arsenic
from
water
and
disinfection.
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