bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 18, 2023
Abstract
Background
The
integration
of
anaerobic
digestion
into
bio-based
industries
can
create
synergies,
which
help
to
make
self-sustaining.
Two-stage
digesters
with
separate
acidification
stages
allow
produce
green
hydrogen
and
short-chain
fatty
acids,
are
promising
industrial
products.
Heat
shocks
be
used
foster
the
production
these
However,
practical
applicability
is
oft
not
addressed
sufficiently.
here
presented
work
aims
close
this
gap.
Methods
Batch
experiments
were
conducted
in
5
litre
double-walled
tank
reactors
incubated
at
37
°C.
Short
microwave
heat
25
min
duration
exposure
times
-
10
80
°C
performed
compared
oven
shocks.
Pairwise
experimental
group
differences
for
gas
chemical
parameters
determined
using
ANOVA
post-hoc
tests.
High-throughput
16S
rRNA
gene
amplicon
sequencing
was
analyse
taxonomic
profiles.
Results
shocking
entire
seed
sludge,
highest
productivity
observed
a
substrate
load
50
g/l
1.09
mol
H
2
/mol
hexose.
With
1.01
hexose,
assisted
treatment
significantly
different
from
oven-based
treatments.
study
emphasised
better
repeatability
microwave-assisted
experiments,
showing
low
variation
coefficients
averaging
29
%.
Microwave
pre-treatment
indicates
high
predictability
stronger
microbiome
shift
Clostridia
than
oven.
supported
formation
butyric
acid
up
10.8
average
peak
24.01
butyric/acetic
ratio
2.0.
Conclusion
show
suitability
shock
sludge
rather
just
small
inoculum,
makes
process
more
relevant
application.
A
microwave-based
has
proven
alternative
treatments,
ultimately
might
facilitate
implementation
systems.
approach
becomes
economically
sustainable
high-temperature
pumps
coefficient
performance
(COP)
4.3.
Bioresource Technology Reports,
Год журнала:
2024,
Номер
26, С. 101823 - 101823
Опубликована: Март 24, 2024
Achieving
renewable
clean
energy
to
meet
increasing
global
demand
and
counter
overreliance
on
depleting
unsustainable
sources
has
recently
drawn
significant
research
interest.
Similarly,
attain
the
sustainable
development
goals
(SDGs)
"zero
hunger"
agenda,
massive
agricultural/food
productions
are
embarked
on,
leading
increased
agro-food
waste
(AFW)
generation
with
enormous
handling
costs
evade
its
contribution
environmental
pollution.
The
advent
of
biorefineries
fostered
a
healthy
balance
for
tackling
challenges
from
AFW
–
thereby
promoting
circular
bioeconomy
(CBE).
Integrating
several
emerging
microbial/enzymatic
bioconversion
processes
facilitated
overall
increase
in
process
efficiency.
This
review,
therefore,
provides
extensive
information
ecological
impacts
AFW,
as
well
biorefinery
sustainability.
We
also
critically
reviewed
advances
integrated
engineering
valorization.
Finally,
limitations
prospects
real-life
application
these
recent
approaches
were
suggested.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
79, С. 551 - 578
Опубликована: Июль 8, 2024
This
review
comprehensively
evaluates
the
integration
of
solar-powered
electrolytic
hydrogen
(H2)
production
and
captured
carbon
dioxide
(CO2)
management
for
clean
fuel
production,
considering
all
potential
steps
from
H2
methods
to
CO2
capture
separation
processes.
It
is
expected
that
near
future
will
cover
CO2-capturing
technologies
integrated
with
solar-based
at
a
commercially
viable
level,
over
5
billion
tons
are
be
utilized
potentially
worldwide
in
2050
achieve
carbon-neutral
levels.
The
out
hydrocarbon-based
processes
using
fossil
fuels
emits
greenhouse
gas
emissions
17-38
kg
CO2/kg
H2.
On
other
hand,
.
renewable
energy
based
green
less
than
2
which
makes
it
really
appealing
implementation.
In
addition,
capturing
synthesizing
alternative
help
generate
smart
cities.
this
regard,
most
sustainable
promising
method
post-combustion
an
adsorption-separation-desorption
monoethanolamine
adsorbent
high
removal
efficiencies
flue
gases.
Consequently,
article
provides
perspectives
on
integrating
energy-based
systems
create
cities
communities.
Rapid
urbanization
and
population
growth
have
intensified
global
energy
demand,
with
fossil
fuel
consumption
aggravating
air
pollution
climate
change.
Hydrogen,
a
clean
carrier,
is
essential
for
transitioning
to
low-carbon
economy.
This
study
examines
the
color-coded
classification
of
hydrogen
production
pathways,
derived
from
both
renewable
non-renewable
sources,
their
emission
profiles.
Additionally,
it
delves
into
critical
aspects
storage
transportation,
highlighting
need
robust
infrastructure
ensure
effective
integration
system.
The
concludes
that
traditional
methods,
such
as
coal
gasification
steam
methane
reforming
(SMR),
significantly
contribute
due
reliance
on
fuels
lack
carbon
capture.
While
blue
hydrogen,
utilizing
capture
(CCS),
offers
reduction
in
greenhouse
gas
(GHG)
emissions,
turquoise
green
produced
via
pyrolysis
water
electrolysis,
respectively,
present
cleaner
alternatives
zero
GHG
emissions.
With
regard
storage,
metal
complex
hydrides
emerge
cost-effective
options,
while
compressed
suitable
large-scale
storage.
For
applications
demanding
high
density,
liquefied
cryo-compressed
are
viable,
despite
associated
costs
complexities.
pressurized
tanks,
cryogenic
liquid
tankers,
pipelines
considered.
Pipelines
favored
long-distance
transportation
cost-effectiveness,
tankers
preferred
short
distances,
higher
requirements.
