Sustainability,
Journal Year:
2024,
Volume and Issue:
16(10), P. 4174 - 4174
Published: May 16, 2024
As
a
byproduct
of
municipal
wastewater
treatment
systems,
sewage
sludge
has
traditionally
been
treated
in
low-value
applications
such
as
landfilling,
posing
significant
environmental
risks
due
to
its
pollutant
content.
However,
there
is
growing
interest
utilizing
the
energy
potential
through
thermochemical
conversion
methods.
Among
these
methods,
hydrothermal
liquefaction
(HTL)
come
fore
promising
green
approach,
offering
an
environmentally
friendly
means
extracting
bio-oils
and
biochemicals
from
sludge.
In
this
study,
HTL
method,
regarded
innovative
approach
among
methods
apart
incineration,
pyrolysis,
comparatively
investigated
terms
greenhouse
gas
(GHG)
emissions
alongside
other
particular,
study
analyzes
projected
amount
various
characteristics
that
could
potentially
be
generated
by
2030
for
city
Adana,
which
currently
produces
approximately
185
tons
per
day.
The
findings
indicate
without
intervention,
production
reach
68,897
year
2030.
Moreover,
research
demonstrates
utilization
results
reduction
7-fold
compared
with
incineration
Open Research Europe,
Journal Year:
2025,
Volume and Issue:
5, P. 43 - 43
Published: Feb. 6, 2025
Background
The
growing
demand
for
food
products,
driven
by
a
world
population,
has
increased
Europe's
dependence
on
conventional
fertilizers,
which
have
high
impact
the
environment.
In
last
decade,
new
circular
fertilizer
value
chains
appeared
as
promising
alternatives
to
fertilizers.
Methods
Because
of
huge
number
alternatives,
this
study
aimed
develop
practical
methodology
that
facilitates
analysis
data
related
each
chain
identify
and
select
most
promote
their
wide-scale
production
use
in
agriculture,
replacing
fertilizers
Europe.
This
is
based
two
stages
(funnelling
process
scoring
system)
considers
16
criteria
defined
study.
was
tested
48
identified
during
mapping
secondary
raw
materials
Europe
with
potential
be
used
when
processed,
classifying
them
into
seven
different
materials:
urban
wastewater
(UWW),
industrial
(IWW),
sewage
sludge
(SS),
biowaste
(BW),
biological
by-products
(BBP),
treated
manure
(TM),
digestate
(DIG).
funnelling
GO/NO-GO
approach
meets
six
allows
discarding
18
chains,
from
30
second
stage.
system
more
complete
analysis,
including
ten
criteria.
Results
allowed
identification
analyzed,
concluding
struvite
UWW,
IWW,
stabilized
SS,
composted
BW,
feather
meal
BBP,
solid
fraction
DIG,
spent
mushroom
substrate
TM
are
options
agriculture.
Conclusions
evaluate
generate
fertlizers.
Seven
were
finally
selected.
Journal of Environmental Management,
Journal Year:
2025,
Volume and Issue:
379, P. 124802 - 124802
Published: March 9, 2025
This
study
explores
for
the
first
time
P
recovery
from
poultry
litter
ash
(PLA)
using
microwave-assisted
thermochemical
treatment,
aiming
to
improve
its
bioavailability
utilization
as
a
fertilizer.
PLA
samples,
originating
laying
hens'
manure
incineration,
were
subjected
microwave
treatment
with
addition
of
sodium
bicarbonate,
and
their
physical-chemical
characteristics
analyzed
X-ray
fluorescence
(XRF),
diffraction
(XRD),
scanning
electron
microscopy
energy
dispersive
spectroscopy
(SEM-EDS).
The
results
indicate
that
led
formation
NaCaPO4
crystals,
significant
increase
in
solubility
post-treatment,
which
is
crucial
plant
uptake.
Moreover,
increasing
amorphous
content
decrease
because
atoms
tend
diffuse
within
silica
network.
However,
this
case,
interesting
glass
materials
promising
optical
properties
may
be
obtained.
provides
novel
approach
valorizing
biowaste
contributes
sustainable
phosphorus
management
practices.
Open Research Europe,
Journal Year:
2025,
Volume and Issue:
5, P. 43 - 43
Published: March 31, 2025
Background
The
growing
demand
for
food
products,
driven
by
a
world
population,
has
increased
Europe's
dependence
on
conventional
fertilisers,
which
have
high
impact
the
environment.
In
last
decade,
new
circular
fertiliser
value
chains
appeared
as
promising
alternatives
to
fertilisers.
Methods
Because
of
huge
number
alternatives,
this
study
aimed
develop
practical
methodology
that
facilitates
analysis
data
related
each
chain
identify
and
select
most
promote
their
wide-scale
production
use
in
agriculture,
replacing
fertilisers
Europe.
This
is
based
two
stages
(funnelling
process
scoring
system)
considers
16
criteria
(e.g.
technical
viability,
nutrient
content,
among
others)
defined
study.
was
tested
48
identified
during
mapping
secondary
raw
materials
Europe
with
potential
be
used
classifying
them
into
seven
different
materials:
urban
wastewater
(UWW),
industrial
(IWW),
sewage
sludge
(SS),
biowaste
(BW),
biological
by-products
(BBP),
treated
manure
(TM),
digestate
(DIG).
funnelling
GO/NO-GO
approach
meets
six
allows
discarding
18
chains,
from
30
second
stage.
system
more
complete
analysis,
including
ten
criteria.
Results
allowed
identification
analysed,
concluding
struvite
UWW,
IWW,
stabilized
SS,
composted
BW,
feather
meal
BBP,
solid
fraction
DIG,
spent
mushroom
substrate
TM
are
options
agriculture.
Conclusions
evaluate
generate
fertlizers.
Seven
were
finally
selected.
