Journal of Environmental Engineering,
Journal Year:
2017,
Volume and Issue:
143(7)
Published: March 2, 2017
The
response
surface
method
(RSM)
was
used
to
find
out
the
best
conditions
for
nitrate
removal
by
electrocoagulation
(EC)
process
with
aluminum
electrodes.
independent
variables
were
initial
concentration,
reaction
time,
pH,
and
cell
voltage.
A
statistical
analysis
of
variance
(ANOVA)
performed
optimization
parameters
obtained
from
experimental
data.
quadratic
model
suggested
as
a
good
prediction
efficiency.
optimum
at
pH
10,
17
V
voltage,
68
min
when
concentration
found
be
226
mg/L.
At
conditions,
efficiency
energy
consumption
87.95%
144.15
kWh/m3,
respectively.
In
terms
consumption,
coefficients
determinations
0.95
0.99,
results
indicate
that
voltage
most
important
parameters.
also
show
agreement
between
data
predicted
equation.
Environmental Health Engineering and Management,
Journal Year:
2016,
Volume and Issue:
3(3), P. 137 - 142
Published: Aug. 1, 2016
Background:
Application
of
potassium
ferrate
is
a
chemical
oxidation
approach
used
for
water
and
wastewater
treatment.
The
aim
this
study
to
apply
central
composite
design
(CCD)
response
surface
methodology
(RSM)
optimize
consumption
in
the
treatment
from
carpet
industries.
Environmental Technology,
Journal Year:
2011,
Volume and Issue:
33(4), P. 419 - 427
Published: June 5, 2011
The
present
paper
deals
with
the
effects
of
frequently
used
textile
preparation
chemicals
and
common
ions
on
H2O2/UV-C
treatment
a
commercially
important
slowly
biodegradable
nonionic
surfactant,
namely
nonylphenol
bearing
10
ethoxylated
chains.
For
this
purpose,
effect
soda
ash
carbonate
(0-5.0
g
L(-1)),
two
phosphonic
acid-based
organic
sequestering
agents
(0-2.5
L(-1))
chloride
(0-3.0
at
different
pH
values
(3.5
10.5)
as
hydroxyl
radical
scavengers
was
experimentally
investigated.
Among
studied
scavengers,
decreasing
order
scavenging
capacity
established
diethylene
triamine
pentamethylene
acid
>
1-hydroxy
ethylidene-1,1-diphosphonic
10.5
3.5
10.5.
