Applied Sciences,
Год журнала:
2022,
Номер
12(14), С. 7291 - 7291
Опубликована: Июль 20, 2022
The
development
of
a
sustainable
bioenergy
market
is
currently
largely
fueled
by
energy
crops,
whose
ever-increasing
production
competes
with
the
global
food
and
feed
supply.
Consequently,
non-food
crops
need
to
be
considered
as
alternatives
for
biomass
production.
Such
include
microalgal
biomass,
well
grown
on
non-agricultural
land.
aim
present
study
was
evaluate
how
co-digestion
giant
miscanthus
silage
affects
feedstock
properties,
biogas
process,
yields,
methane
fractions
digestate
profile.
Combining
microbial
found
produce
better
C/N
ratios
than
using
either
substrate
alone.
highest
rates—628.00
±
20.05
cm3/gVS
3045.56
274.06
cm3
CH4/d—were
obtained
40%
microalgae
in
feedstock.
In
all
variants,
bulk
community
consisted
bacteria
(EUB338)
archaea
(ARC915).
Agronomy,
Год журнала:
2024,
Номер
14(3), С. 541 - 541
Опубликована: Март 7, 2024
This
study
assesses
the
status
of
hydrothermal
carbonization
(HTC)
technology
and
identifies
barriers
hindering
its
commercial
viability.
Conducting
a
global
survey
among
HTC
companies
(with
total
24
surveys
sent),
research
evaluates
current
landscape,
challenges,
future
prospects
large-scale
operations.
Furthermore,
it
presents
detailed
inventory
existing
facilities,
illustrating
geographical
distribution
trends
in
application.
Most
are
located
Europe,
followed
by
Asia
North
America.
With
substantial
participation
from
companies,
exceeding
62%
(15
companies),
provides
comprehensive
overview
diverse
their
business
models,
regulatory
overall
state
technology.
The
majority
this
study,
approximately
80%,
offer
services
field
waste
management.
paper
also
explores
potential
transforming
management
practices,
carbon
sequestration
methodologies,
development
new
materials.
Employing
thorough
SWOT
analysis,
advocates
for
broader
adoption
HTC,
emphasizing
transformative
capacity
fostering
sustainable
urban,
industrial,
agricultural
residues,
promoting
circular
economy
principles,
mitigating
climate
change,
offering
robust
foundation
informed
decision-making
strategies.
Energy,
Год журнала:
2024,
Номер
291, С. 130221 - 130221
Опубликована: Янв. 1, 2024
The
objective
of
this
article
is
to
investigate
the
integration
a
digestate
treatment
with
biogas
plant
processing
sewage
sludge
and
food
waste
via
process
simulations:
co-HTC
mixed
digestates
supercritical
water
gasification
(SCWG)
aqueous
effluent.
optimum
conditions
are
selected
based
on
energetic
yields,
comparing
relative
equipment
sizes
besides
hydrochar
product.
200
°C,
30
%
solid
load,
1-h
residence
time
for
mixing
ratios
in
scope:
yields
3.58–3.59
MJ/kg
reactor
inlet.
These
result
more
than
60
K,
P,
N
recovery
hydrochar.
SCWG
effluent
provides
complete
mineral
form
surplus
energy
production
through
syngas
while
causing
some
nitrogen
loss
as
N2
gas.
Although
data
calculated
from
individual
HTC
results,
synergetic
effect
yield
does
not
affect
selection
investigated
(the
origins
digestates).
Consequently,
plants
can
evolve
into
multi-product
biorefineries
proposed
integration.
Meanwhile,
study
guide
future
experiments
reduce
required
runs.
Journal of Cleaner Production,
Год журнала:
2024,
Номер
447, С. 141527 - 141527
Опубликована: Фев. 28, 2024
Due
to
the
constantly
growing
customers'
demand
for
local
products,
a
significant
rise
in
craft
breweries'
number,
as
well
beer
production,
has
been
observed
last
years.
The
sustainability
of
breweries
is
hot
scientific
topic,
which
involves
water
and
waste
management,
energy
efficiency,
renewable
implementation.
Life
cycle
assessment
(LCA)
life
costing
(LCC)
are
useful
tools
compare
alternative
management
pathways
standardized
manner,
highlighting
hotspots
with
highest
environmental/economic
impact.
Brewery-spent
grain
(BSG)
represents
main
organic
by-product
production;
traditionally,
it
used
animal
feed.
However,
not
always
there
enough
farms
utilise
all
produced
BSG
locally,
especially
developed
countries
industrialized
areas,
so
solutions
should
be
exploited.
This
review
gives
thorough
overview
different
technological
valorisation
considering
state-of-the-art
research
on
including
both
traditional
(animal
feed,
composting,
anaerobic
digestion)
innovative
(thermochemical
processes,
pellets
food
chemicals'
extraction)
solutions.
applicability
each
technology
specifically
discussed.
To
enhance
decarbonize
industrial
generation,
either
through
photovoltaic
(PV)
or
solar
thermal,
considered
well:
while
thermal
implementation
appears
cumbersome
due
batch
nature
PV
installation
mature,
simple
straightforward
solution.
Geothermal
integration
mentioned
well.
Finally,
lack
studies
LCA/LCC
application
presented
highlighted,
requiring
intensive
future
research.
Energy Conversion and Management,
Год журнала:
2022,
Номер
270, С. 116215 - 116215
Опубликована: Сен. 18, 2022
Digestate,
a
nutrient-rich
substance,
is
potential
resource
of
income
in
biogas
plants.
It
can
be
utilized
as
soil
amendment
and
solid
biofuel
due
to
containing
inorganic
organic
compounds.
However,
concerning
the
environmental
regulations,
there
requirement
for
further
processes,
including
hydrothermal
carbonization
(HTC).
Regarding
selection
optimum
conditions
from
experimental
data,
this
study
proposes
energetic
yield
performance
indicator
techno-economic
viewpoint,
taking
load
relative
equipment
size
comparison
into
account
well
heating
value
hydrochar.
The
energy
content
hydrochar
per
unit
mass
reactor
inlet,
MJ/kg
inlet.
Among
investigated
data
various
digestates,
feedstock
were
HTC
agricultural
residue
(with
5.02
Energetic
inlet)
at
200
°C
residence
time
1
h
with
30
%
based
on
yields,
i.e.
selected
process
simulation.
This
also
investigates
required
enabling
balance
simulation
models.
In
addition
proximate
analysis
hydrochar,
characterization
water
important
representing
dissolved
organics.
available
influences
accuracy
closure
elemental
balances
addition,
aspects
producing
20
moisture
well:
impact
property
method
balance,
heat
reaction
compared
literature
values,
integration
concepts.
SRK,
PSRK,
NRTL,
IDEAL
methods
reported
same
value,
−122
kW,
duty
reactor.
corresponds
−1.46
dry
−1.74
dry-ash-free
inlet
reaction.
Abstract
Anaerobic
digestion
(AD)
has
been
considered
as
a
promising
technique
for
food
waste
(FW)
recycling.
However,
the
accumulation
of
volatile
fatty
acids
(VFAs)
restricts
stability
anaerobic
reactors.
The
present
study
investigated
use
biochar
produced
at
different
conditions
(750
°C-30
min,
750
°C-60
°C-120
550
650
850
950
min)
enhancing
AD
FW.
Batch
experiments
showed
that
all
increased
methane
production
rates
and
obtained
min
resulted
in
highest
enhancement
by
21.5%.
It
was
further
surface
oxygen-containing
functional
groups
graphitization
degree
were
critical
factors
improving
production.
Microbial
analysis
addition
formed
microbial
communities,
Methanosaeta
,
Romboutsia
norank_f_Anaerolineaceae
enriched,
which
might
be
correlated
with
direct
interspecies
electron
transfer
(DIET).
This
research
could
enhance
FW
also
revealed
main
characteristics
relating
AD.
Graphical
