Energies,
Journal Year:
2024,
Volume and Issue:
17(3), P. 751 - 751
Published: Feb. 5, 2024
Digestate
is
produced
in
large
quantities
by
the
anaerobic
digestion
process,
which
recognized
to
be
a
promising
technology
for
producing
bioenergy
from
biological
waste.
highly
humid
by-product
containing
organic
and
inorganic
substances,
including
nutrients
that
make
it
suitable
soil
applications.
However,
can
considered
high-risk
environmental
contaminant
if
not
correctly
treated.
For
these
reasons,
thermochemical
treatment
one
of
alternatives
valorizing
digestate,
leading
high
ash
quantity.
This
review
aims
investigate
formation
derived
valorization
treatments
digestate.
Furthermore,
considering
compositions
elements
present
ashes,
an
additional
objective
identify
possible
prospects
reuse
ashes
following
circular
economy
approach.
Processes,
Journal Year:
2023,
Volume and Issue:
11(9), P. 2683 - 2683
Published: Sept. 7, 2023
Energy
conservation
has
emerged
as
a
strategic
target
worldwide,
which
will
enable
the
protection
of
environment
and
preservation
natural
resources.
consumption
in
buildings
for
heating
cooling
is
considered
one
main
sources
energy
several
countries.
For
this
reason,
there
an
ongoing
search
appropriate
alternatives
to
preserve
reduce
losses.
To
overcome
challenge,
thermal
insulation
becoming
increasingly
essential
save
energy.
Although
large
number
materials
are
used
commercially,
sector
still
faces
various
challenges
such
cost,
mechanical
properties,
end-of-life
cycle,
well
health
issues,
etc.
Furthermore,
harmful
impact
on
issues
should
be
not
only
relation
expended
whilst
using
them
but
also
performance
they
constructed
from.
The
commonly
construction
industry
today
polymer-based
polystyrene
polyurethane
foam.
These
have
critical
environment.
In
light
these
results,
researchers
concluded
that
it
imperative
develop
insulating
with
outstanding
properties
lower
relatively
affordable.
Agricultural
and/or
industrial
wastes,
even
fibers,
green
materials,
eco-friendly,
cost-effective
alternative
conventional
oil-based
fact
their
cycle
does
pose
problem.
This
review
paper
discusses
renewable
resources
wastes
developed
insulations.
sheds
composite
cycle.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(9), P. 7396 - 7396
Published: April 29, 2023
A
comprehensive
understanding
of
the
mechanisms
associated
with
pelletization
an
anaerobic
digestate
is
necessary
to
optimize
pellet
production
process
and
achieve
better
more
sustainable
management
digestate.
This
work
evaluated
behavior
during
cyclic
loading
unloading
in
a
closed
matrix.
The
results
presented
here
are
continuation
those
observed
previous
that
effect
moisture
content
on
under
loading/unloading
conditions
distribution
permanent
elastic
strain
energy
demonstrated
study
was
verified
present
different
conditions.
Zwick
universal
machine
used
for
experiments.
samples
were
loaded
amplitudes
8,
11,
14,
17,
20
kN
10
cycles.
Two
distinct
levels
digestate—10%
22%—were
analyzed.
confirmed
dissipated
independent
remained
relatively
constant
wide
range
applied
loads.
Higher
values
higher
only
when
loads
applied.
In
studied
loads,
characteristic
differences
noted
curves
regardless
load
magnitude.
increase
led
strength,
but
10%.
strength
reflect
well
irreversible
conclusions
about
area
enclosed
between
curves.
While
Deltas
represent
about
5%
of
the
global
land
surface,
they
occupy
over
550
million
people
(i.e.,
a
high
population
density).
The
Delta
area,
which
is
characterized
by
flat
topography,
fertile
alluvial
soils,
and
abundant
natural
resources,
vital
for
human
habitation.
However,
this
area
subjected
to
diverse
anthropogenic
threats,
owing
climate
change
vulnerability.
delicate
equilibrium
delta
ecosystems
threatened
as
activities
escalate
(e.g.,
illegal
solid-waste
dumping),
necessitating
innovative
solutions.
This
chapter
includes
main
concluding
remarks
on
evolution
waste
management
practices
within
Deltas,
emphasizing
significance
sustainable
approaches
balance
ecological
socio-economic
aspects.
As
continue
confront
dynamic
seasonal
challenges,
book
tends
provide
foundation
promoting
resilient
in
solid
(SWM)
these
ecosystems.
Energies,
Journal Year:
2024,
Volume and Issue:
17(18), P. 4573 - 4573
Published: Sept. 12, 2024
As
a
by-product
of
wastewater
treatment,
sewage
sludge
can
be
used
for
natural,
agricultural,
or
energy
purposes.
One
method
preparing
management
and
use
is
solar
drying.
To
intensify
the
drying
process,
natural
additives
to
alter
structure
accelerate
evaporation
water.
This
research
aimed
evaluate
influences
different
organic
in
mixtures
on
physicochemical
parameters
briquettes.
was
carried
out
without
thermal
boosting
4
×
2.5
2
m
plastic
tunnel.
The
tunnel
equipped
with
three
stations
control
measuring
equipment.
In
two
test
series,
form
straw
lignocellulosic
materials,
sawdust,
bark,
woodchips,
walnut
shells,
were
used.
Briquettes
made
from
resulting
then
subjected
physical
chemical
analyses.
showed
high
variability
contents
trace
elements,
nitrogen,
sulphur
relation
an
increase
amount
briquettes,
which,
briquettes
sludge,
nearly
twice
as
mixtures.
results
flue
gas
analysis
sawdust
wood
chip
very
similar.
materials
(bark
chips)
had
fuel
properties
similar
woody
biomass,
calorific
value
heat
combustion
15–16
MJ/kg.
Fibrous
(straw)
significantly
increased
strength
by
more
than
50%
value.
compositions
affected
following
briquetting
parameters:
temperature
compressive
force.
classified
according
ISO
21640
SRFs
(solid
recovered
fuels).
most
results,
net
(NCV)
3
4;
chlorine
content
(CL)
1;
mercury
(Hg)
1.
facilitated
agricultural
Waste and Biomass Valorization,
Journal Year:
2024,
Volume and Issue:
15(8), P. 4915 - 4925
Published: April 13, 2024
Abstract
Purpose
Ever
increasing
food
waste
production
has
promoted
anaerobic
digestion
and
composting
for
its
proper
management,
producing
a
relevant
amount
of
recycled
organic
(OW)
possible
agricultural
uses.
However,
little
is
known
regarding
soil
carbon
management
using
this
type
OW.
Methods
In
study,
an
digestate
from
the
wet
(WET
D
),
one
dry-batch
process
(DRY
along
with
their
respective
composts
C
DRY
were
utilized
in
pot
test
over
two
growing
cycles
(84
+
84
days),
without
mineral
nitrogen
(N)
fertilization,
compared
bio-waste
compost
(BW
)
chemical
reference
(Chem).
At
end
growth
(days
168),
ryegrass
dry
biomass
(DW)
N
uptake
assessed.
Results
The
was
analyzed
(SOC)
potassium
permanganate
(KMnO
4
oxidizable
fraction
(C
L
as
well
δ
13
Δ
C.
day
84,
SOC
(g
kg
−
1
highest
(8.53)
>
WET
(7.71)
=
BW
(7.86)
Chem
(6.68),
performed
similarly
at
168.
index
(CMI)
100%
all
treatments
comparison
Chem,
except
.
168,
30%
CMI
registered
Chem.
Conclusion
This
pattern
related
to
generally
marked
depletion
being
confirmed
by
C,
thus
indicating
conservation
form
compost,
very
likely
preferential
lignin
accumulation.
Deltas,
comprising
approximately
5%
of
the
Earth's
land
surface,
occupy
a
high
population
density
globally.
The
distribution
depends
on
geographical
location
and
countries
or
regions
Deltas
under
investigation.
Each
Delta
is
unique
influenced
by
specific
hydrological,
geological,
environmental
conditions.
face
pressing
need
for
effective
waste
management
strategies
to
mitigate
degradation
health
risks.
This
chapter
an
introduction
critical
nexus
solid
(SWM)
sustainability
in
shedding
light
corresponding
challenges
barriers.
chapter's
main
findings
would
strengthen
contribution
stakeholders,
policy-makers,
private
public
sectors
achieving
sustainable
SWM
strategies.
Processes,
Journal Year:
2024,
Volume and Issue:
12(7), P. 1444 - 1444
Published: July 10, 2024
As
the
“carbon
peaking
and
carbon
neutrality”
strategy
advances,
emissions
have
gradually
become
a
significant
indicator
in
selecting
evaluating
sewage
sludge
treatment
solutions.
This
study
compared
footprints
of
different
digested
post-treatment
routes,
taking
Lu’an
project
China
as
an
example.
Considering
anaerobic
digestion
options,
are
follows:
347.7
kg
CO2
(land
application)
<
459.7
(composting-involved
land
858.4
(brickmaking).
In
general,
application
was
superior
to
brickmaking
from
perspective
footprints.
The
power
consumption
incurred
by
aerating
turning
direct
N2O
CH4
during
composting
increase
composting-involved
footprint.
However,
that
is
not
subject
high-temperature
sterilization
compost
phytotoxic
can
be
fetid,
which
limitation
its
applicability.
And
composted
has
lower
N
ratio
water
content,
so
same
input
means
more
usage,
conducive
solving
disposal
problem
large
amounts
sludge.
Thus,
if
possible,
should
preference,
improvements
technique
required
minimize
energy
emissions.
