Water,
Год журнала:
2024,
Номер
16(22), С. 3235 - 3235
Опубликована: Ноя. 11, 2024
This
work
evaluated
the
alterations
in
levels
and
types
of
polycyclic
aromatic
hydrocarbons
(PAHs)
within
both
liquid
solid
products
throughout
process
catalytic
supercritical
water
gasification
dewatered
sewage
sludge
to
examine
effect
various
catalysts
inhibit
reaction
pathways.
The
addition
Ni,
NaOH,
Na2CO3,
H2O2,
KMnO4
reduced
concentrations
PAHs,
with
Ni
H2O2
showing
best
performance.
especially
higher-molecular-weight
compounds
residues,
decreased
sharply
as
amount
increased.
At
a
10
wt%
addition,
PAHs
were
by
91%
88%,
respectively.
High-ring
not
detected
residues
increased
an
8
wt%.
evidently
inhibits
PAH
formation
promoting
ring-opening
reactions
initial
raw
inhibiting
polymerization
open-chain
intermediate
products.
NaOH
+
or
combined
significantly
lowered
while
increasing
H2
yield.
5
70%
44%,
respectively,
yield
escalated
from
0.13
mol/kg
OM
3.88
OM.
Possible
mechanisms
associated
pathways
these
are
proposed.
E3S Web of Conferences,
Год журнала:
2025,
Номер
601, С. 00087 - 00087
Опубликована: Янв. 1, 2025
The
treatment
of
sewage
wastewater
generates
a
substantial
amount
sludge,
which
poses
significant
ecotoxicological
and
environmental
challenges.
Managing
this
sludge
is
critical,
as
traditional
disposal
methods
carry
risks:
agricultural
use
can
lead
to
contamination,
while
landfill
raises
concerns
about
solid
waste
management
the
preservation
sites.
Our
research
focuses
on
converting
urban
into
activated
carbon.
We
employed
various
techniques
characterize
NaOH-activated
biochar,
including
infrared
(IR)
analysis.
BET
analysis
revealed
specific
surface
area
62.35
m
2
/g.
also
assessed
biochar
for
its
effectiveness
in
adsorbing
brilliant
cresyl
bleu
(BCB).
SSE
error
calculations
indicated
first-order
adsorption,
isotherms
suggested
better
fit
with
Sips
model,
indicating
heterogeneous
adsorption
an
ns
value
0.95.
study
highlights
dyes
such
BCB.
Energy Technologies & Resource Saving,
Год журнала:
2025,
Номер
82(1), С. 77 - 106
Опубликована: Март 31, 2025
Basic
data
on
the
properties
and
volume
of
municipal
(urban)
sewage
sludge
(MSS)
formation
in
metropolitan
region
Ukraine,
which
is
a
product
urban
treatment,
are
presented.
The
analysis
current
state
ways
MSS
management
makes
it
possible
to
distinguish
following
main
directions:
physical-mechanical,
physical-chemical,
biological
combined
methods
handling
it.
its
processing
products
(primarily
biocoal
(biochar,
hydrochar),
obtained
as
result
incineration,
pyrolysis,
gasification,
or
hydrothermal
carbonization)
used
both
individually
combination
with
other
substances
agriculture
(fertilizers;
chemical
soil
melioration);
earthworks
(reinforcement
weak
expansive
soils,
use
tamponage
compositions,
arrangement
embankments,
leveling
terrain);
road
construction
(bitumen,
asphalt
concrete
mixtures);
building
materials
(cement
clinker,
cement,
concrete,
solutions,
bricks,
blocks,
artificial
stone,
glass,
glass
ceramics,
expanded
clay
(ceramsite),
aggregate);
protective
coatings
(paints,
shotcrete,
thermal
insulation
materials);
sorbents,
catalysts
their
carriers;
compressed
fuel;
(pigments,
electrodes
electric
sources,
for
storing
certain
substances,
coagulants,
inoculants,
zeolites,
fibres);
chemical-thermal
processes
production
ash,
biochar,
pyrolysis
liquid
synthesis
gas
fuel,
raw
means
purposes.
Currently,
most
expedient
disposal
direct
forestry,
industry,
well
fuel
energy
sector.
It
should
be
noted
that
due
unpredictable
qualitative
quantitative
composition
MSS,
there
no
single
recommendations
effective
disposal;
however,
existing
promising
technologies
analogues
make
choose
combine
various
under
conditions.
Bibl.
141,
Fig.
2.
Molecules,
Год журнала:
2024,
Номер
29(13), С. 3007 - 3007
Опубликована: Июнь 25, 2024
The
United
Nations
proposed
the
Sustainable
Development
Goals
with
aim
to
make
human
settlements
in
cities
resilient
and
sustainable.
excessive
discharge
of
urban
waste
including
sludge
garden
can
pollute
groundwater
lead
emission
greenhouse
gases
(e.g.,
CH4).
proper
recycling
is
essential
for
responsible
consumption
production,
reducing
environmental
pollution
addressing
climate
change
issues.
This
study
aimed
prepare
biochar
high
adsorption
amounts
iodine
using
peach
wood
from
waste.
was
conducted
examine
variations
mass
ratio
between
(2/1,
1/1,
1/2)
as
well
pyrolysis
temperatures
(300
°C,
500
700
°C)
on
carbon
yield
capacities
biochar.
Scanning
electron
microscopy,
Brunauer–Emmett–Teller
analysis,
Fourier
transform
infrared
spectrometry,
powder
X-ray
diffraction,
elemental
analysis
were
used
characterize
produced
at
different
ratios.
results
indicate
that
found
be
highest
(>60%)
a
temperature
300
°C
across
temperatures.
absorbed
aqueous
solution
ranged
86
223
mg
g−1
1:1
wood,
which
comparably
higher
than
those
observed
other
advances
water
treatment
by
offering
cost-effective
method
derived
processing
Energies,
Год журнала:
2024,
Номер
17(12), С. 2956 - 2956
Опубликована: Июнь 15, 2024
The
presented
case
study
evaluates
the
environmental
and
economic
effects
of
carbon
bio
pellet
production
from
orchard
grass
by
Farmutil
HS
Inc.
through
hydrothermal
carbonisation
method,
using
obtained
biofuel
as
a
substitute
for
natural
gas
heat
production.
Hydrothermal
is
zero-waste
technology
that
produces
renewable
bioenergy
substituting
fossil
fuels
non-renewable
resources.
Processing
60,000
t/y
with
this
method
resulted
in
total
amount
456,780
GJ/y.
This
means
over
60%
energy
produced
could
be
substituted
bioenergy.
It
also
very
important
estimated
cost
pellets
29%
lower
comparison
to
