Dimethyl
phthalate,
a
common
ingredient
in
the
manufacture
of
plastics,
was
typical
persistent
substance
organic
wastewater
environment
due
to
its
lipophilic
and
refractory
properties.
In
order
achieve
higher
degradation
dimethyl
this
study
used
an
experimentally
constructed
high-pressure
resistant
microwave-catalyzed
experimental
system,
which
could
establish
coupling
between
microwave
field
pressure
wet
oxidation
process.
Three
different
types
catalysts
were
investigated
for
catalytic
degradation.
The
effects
variables
such
as
reaction
temperature,
system
catalyst
concentration
on
removal
phthalate
also
investigated.
microwave-induced
catalysis
increasing
temperature
effectively
increase
rate
constant.
addition,
COD
content
reduced
from
4161.8
mg/L
1710.5
within
5
min.
energy
flow
economy
indices
whole
process
comprehensively
analyzed.
Finally,
analytical
results
intermediates
other
characterization
techniques
show
that
pollutant
degraded
by
·OH.
Waste Management,
Год журнала:
2024,
Номер
179, С. 55 - 65
Опубликована: Март 9, 2024
Biodiesel
production
produces
significant
quantities
of
impure
crude
glycerol
as
a
by-product.
Recent
increases
in
the
global
biodiesel
have
led
to
surplus
glycerol,
rendering
it
waste.
As
result,
different
methods
for
its
valorisation
are
currently
being
investigated.
This
paper
assesses
life
cycle
environmental
impacts
an
emerging
technology
purification
–
multi-step
physico-chemical
treatment
comparison
incineration
with
energy
recovery
commonly
used
disposal.
For
former,
three
acids
(H3PO4,
H2SO4
and
HCl)
considered
acidification
step
process.
The
results
suggest
that
H2SO4-based
is
best
option
17
net-negative
out
18
categories
considered;
this
due
system
credits
purified
heat
potassium
salts.
In
recovery,
process
has
lower
savings
climate
change
impact
(−311
versus
−504
kg
CO2
eq./t
glycerol)
but
performs
better
ten
other
categories.
Sensitivity
analyses
highly
dependent
on
composition,
allocation
burdens
production.
example,
treating
content
would
increase
all
except
fossil
depletion
higher
consumption
chemicals
glycerol.
Considering
useful
product
rather
than
waste
allocating
from
most
significantly,
including
(22–40
%),
while
depletion,
freshwater
marine
eutrophication
become
net-positive.
findings
research
will
be
interest
industry
industrial
sectors
generate
Separations,
Год журнала:
2025,
Номер
12(4), С. 101 - 101
Опубликована: Апрель 21, 2025
In
recent
years,
the
rapid
development
of
industry
has
led
to
discharge
large
quantities
pollutants,
including
harmful
dyes,
into
water
sources,
thereby
posing
potential
threats
human
health
and
environment.
FeOCl
biochar
have
their
own
shortcomings
as
a
mediator
in
heterogeneous
Fenton
process.
To
make
both
materials
useful,
supported
on
bamboo
(FeOCl/BC)
was
prepared
by
calcination
using
FeCl3·6H2O
powder
raw
materials,
composite’s
catalytic
activities
were
explored
with
acid
orange
II
(AO-II)
target
pollutant.
The
degradation
efficiency
FeOCl/BC
composites
AO-II
determined
testing
mass
ratio
BC,
initial
pH,
temperature,
H2O2
concentration,
catalyst
addition,
addition
coexisting
inorganic
anions,
natural
organic
matter.
increased
activation
generate
•OH
for
removal
accelerated
cycle
Fe3+/Fe2+.
rate
Fe1C0.2
composite
97.1%
when
BC
1:0.2
(Fe1C0.2),
which
higher
than
that
pure
components
(FeOCl
or
BC)
at
pH
=
6.1.
Moreover,
after
five
reuses,
still
showed
high
activity
AO-II,
83.3%
low
loss.
capture
experiments
active
material
mainly
dominated
•OH;
however,
•O2−
h+
played
minor
roles.
synthesized
could
be
applied
contaminants
such
efficiency.
