Fermentation,
Journal Year:
2023,
Volume and Issue:
9(7), P. 642 - 642
Published: July 8, 2023
Temperature
plays
a
significant
role
in
anaerobic
digestion
(AD)
as
it
affects
the
microbial
communities
and
ultimately
controls
efficiency
of
process.
Few
studies
have
looked
at
temperature-adjusted
AD,
but
is
unclear
how
temperature
shifts
affect
biogas
production
dynamics
microorganisms
involved
methanogenesis.
This
study
tested
two
shift
scenarios
fed-batch
mode
using
anaerobically
digested
sewage
sludge
glucose-based
substrate.
The
first
scenario
was
acclimatized
to
upshifting
temperatures
from
42
°C
48
while
second
downshifting
55
45
°C.
Both
resulted
decrease
production,
especially
upshifted
experienced
maximum
83%,
downshifted
16–33%
methane
production.
Next-generation
16S
rRNA
sequencing
revealed
domination
Methanoculleus
scenario.
However,
low
correlation
between
number
other
hydrogenotrophic
methanogens
indicates
inhibition
pathway.
showed
better
due
substantial
acetoclastic
Methanosaeta
abundance
sulfate-reducing
bacteria.
Hence,
communities,
significantly
affecting
performance.
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
22, P. 102292 - 102292
Published: May 22, 2024
After
the
industrial
revolution,
rapid
population
growth
and
burning
fossil
fuels
led
to
achievement
of
massive
amounts
both
liquid
solid
waste,
which
can
pose
numerous
threats
for
all
compartments
environment.
Anaerobic
Digestion
(AD)
has
been
one
most
applicable
techniques
used
during
last
few
decades
overcome
unpleasant
presence
organic
fraction
waste
sewage
sludge
(SS),
as
result
this
technique,
biogas
is
main
sources
energy
be
produced.
Therefore,
application
AD
a
solution
biodegradable
center
attentions
since
significant
are
being
produced
every
day.
In
regard
comprehensive
review
was
conducted
know
advantages,
disadvantages,
various
that
improve
methane
yield,
insights
on
pretreatment
methods,
operating
factors
elucidate
research
gaps
future
opportunities.
Also,
in
current
study
we
discussed
about
conditions
single-stage
digesters,
two-stage
anaerobic
co-digestion.
Our
first
worked
by
yield
from
system.
Water,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1608 - 1608
Published: June 4, 2024
Anaerobic
digestion
(AD)
is
a
promising
method
for
resource
recovery
from
various
wastes.
Compared
to
the
conventional
single-stage
AD
process,
two-stage
process
with
separate
H2
and
CH4
production
provides
higher
energy
efficiency
enhanced
operation
stability.
The
stage
separation
makes
it
possible
apply
optimal
conditions
different
functional
microorganisms
in
their
respective
stages.
This
review
elaborates
mechanisms
of
evaluates
recent
research
trends
on
this
topic.
A
comprehensive
comparison
between
single-
processes
made
perspective
biogas
production,
organics
degradation,
recovery,
main
influence
factors
are
discussed,
including
substrates,
inoculum,
parameters,
such
as
pH,
temperature,
etc.
Upgrading
technologies
assessed.
microbial
communities
treating
substrates
systems
also
summarized.
Furthermore,
future
opportunities
enhancing
application
technology
highlighted.
