Energies,
Год журнала:
2019,
Номер
12(3), С. 365 - 365
Опубликована: Янв. 24, 2019
Disturbances
of
the
anaerobic
digestion
process
reduce
economic
and
environmental
performance
biogas
systems.
A
better
understanding
highly
complex
is
crucial
importance
in
order
to
avoid
disturbances.
This
review
defines
disturbances
as
significant
changes
functionality
within
microbial
community
leading
unacceptable
severe
decreases
production
requiring
an
active
counteraction
be
overcome.
The
main
types
agricultural
are
classified
unfavorable
temperatures,
fluctuations
availability
macro-
micronutrients
(feedstock
variability),
overload
degradation
potential,
process-related
accumulation
inhibiting
metabolites
such
hydrogen
(H2),
ammonium/ammonia
(NH4+/NH3)
or
sulphide
(H2S)
inhibition
by
other
organic
inorganic
toxicants.
Causes,
mechanisms
effects
on
microbiome
discussed.
need
for
a
knowledge-based
management
ensure
stable
efficient
with
low
susceptibility
derived
outlook
potential
future
monitoring
control
means
indicators
provided.
Since
fossil
sources
for
fuel
and
platform
chemicals
will
become
limited
in
the
near
future,
it
is
important
to
develop
new
concepts
energy
supply
production
of
basic
reagents
chemical
industry.
One
alternative
crude
oil
natural
gas
could
be
biological
conversion
CO2
or
small
organic
molecules
methane
via
methanogenic
archaea.
This
process
has
been
known
from
biogas
plants,
but
recently,
insights
into
metabolism,
technical
optimizations
technology
combinations
were
gained,
which
would
allow
moving
beyond
mere
biomass.
In
steps
have
undertaken
increase
yield
purity
biogas,
such
as
addition
hydrogen
metal
granulate.
Furthermore,
integration
electrodes
led
development
microbial
electrosynthesis
(MES).
The
idea
behind
this
technique
use
electrical
power
generate
metabolism.
review
summarizes
biochemical
metabolic
background
methanogenesis
well
latest
applications
methanogens.
As
a
result,
shall
give
sufficient
overview
over
topic
both,
biologists
engineers
handling
bioelectrochemical
methanogenesis.
Bioengineered,
Год журнала:
2022,
Номер
13(3), С. 6521 - 6557
Опубликована: Фев. 25, 2022
In
the
past
decades,
considerable
attention
has
been
directed
toward
anaerobic
digestion
(AD),
which
is
an
effective
biological
process
for
converting
diverse
organic
wastes
into
biogas,
volatile
fatty
acids
(VFAs),
biohydrogen,
etc.
The
microbial
bioprocessing
takes
part
during
AD
of
substantial
significance,
and
one
crucial
approaches
deep
adequate
understanding
manipulating
it
different
products
microbiology.
Due
to
highly
complexity
microbiome,
critically
important
study
involved
microorganisms
in
AD.
recent
years,
addition
traditional
methods,
novel
molecular
techniques
meta-omics
have
developed
provide
accurate
details
about
communities
Better
microbiomes
could
guide
us
identifying
controlling
various
factors
both
improving
diverting
metabolic
pathway
production
selective
bio-products.
This
review
covers
platforms
that
results
final
from
microbiological
point
view.
also
highlights
distinctive
interactions
occurring
among
communities.
Furthermore,
assessment
these
existing
digesters
discussed
more
insights
their
structure,
dynamics,
pathways.
Moreover,
affecting
each
platform
are
highlighted.
Finally,
provides
some
applications
bio-products
deals
with
challenges
future
perspectives
Biomass and Bioenergy,
Год журнала:
2022,
Номер
161, С. 106478 - 106478
Опубликована: Май 18, 2022
Optimization
of
the
biogas
generation
process
is
important
to
achieve
efficient
degradation
and
high
methane
yield,
reduce
emissions
from
digestate.
In
this
study,
serial
digester
systems
with
two
or
three
reactors
were
compared
a
single
reactor,
aim
improving
degree
yield
food
waste
assessing
adaptation
microbial
communities
different
reactor
steps.
All
had
same
total
organic
load
(2.4
g
VS/(L
d))
hydraulic
retention
time
(55
days).
Serial
increased
by
>5%
majority
being
obtained
first-step
reactors.
Improved
protein
was
also
in
systems,
>20%
lower
outgoing
concentration
increasing
NH4+-N
every
step.
This
resulted
separation
ammonia
(>384
mg
NH3-N/L)
levels
main
production,
reducing
risk
methanogen
inhibition.
Methanosarcina
dominated
methanogenic
community
all
reactors,
but
increases
hydrogenotrophic
genera
Methanoculleus
Methanobacterium
observed
at
higher
levels.
Potential
syntrophic
acetate-oxidizing
bacteria,
such
as
MBA03
Dethiobacteraceae,
followed
trend
methanogens.
Phylum
Bacteroidota
family
Paludibacteraceae
highly
abundant
first
steps
then
decreased
abruptly,
potentially
linked
an
decrease
last-step
Nevertheless,
results
indicated
relative
abundance
proteolytic
Proteiniphilum
Fastidiosipila
successive
Cell Reports Methods,
Год журнала:
2023,
Номер
3(1), С. 100383 - 100383
Опубликована: Янв. 1, 2023
Multi-omics
data
integration
via
mechanistic
models
of
metabolism
is
a
scalable
and
flexible
framework
for
exploring
biological
hypotheses
in
microbial
systems.
However,
although
most
microorganisms
are
unculturable,
such
multi-omics
modeling
limited
to
isolate
microbes
or
simple
synthetic
communities.
Here,
we
developed
an
approach
activity
interactions
that
leverages
the
reconstruction
metagenome-assembled
genomes
associated
genome-centric
metatranscriptomes.
At
its
core,
designed
method
condition-specific
metabolic
communities
through
metatranscriptomic
data.
Using
this
approach,
explored
behavior
anaerobic
digestion
consortia
driven
by
hydrogen
availability
human
gut
microbiota
dysbiosis
with
Crohn's
disease,
identifying
condition-dependent
amino
acid
requirements
archaeal
species
reduced
short-chain
fatty
exchange
network
respectively.
Our
can
be
applied
complex
communities,
allowing
contextualization
on
metagenome
scale.
Biotechnology for Biofuels,
Год журнала:
2018,
Номер
11(1)
Опубликована: Июль 19, 2018
Anaerobic
digestion
(AD)
is
a
microbe-driven
process
of
biomass
decomposition
to
CH4
and
CO2.
In
addition
renewable
cost-effective
energy
production,
AD
has
emerged
in
the
European
Union
as
an
environmentally
friendly
model
bio-waste
valorisation
nutrient
recycling.
Nevertheless,
due
high
diversity
uncharacterised
microbes,
typical
microbiome
still
considered
"dark
matter".Using
high-throughput
sequencing
small
rRNA
gene,
monthly
monitoring
physicochemical
parameters
for
20
different
mesophilic
full-scale
bioreactors
over
1
year,
we
generated
detailed
view
microbial
ecology
towards
better
understanding
factors
that
influence
shape
these
communities.
By
studying
broadly
distributed
OTUs
present
80%
analysed
samples,
identified
putatively
important
core
bacteria
archaea
accounted
70%
whole
community
relative
abundances.
reactors
localised
at
wastewater
treatment
plants
were
shown
operate
with
distinct
microbiomes
than
agricultural
treating
biogas
units.
We
also
showed
both
composed
low
(with
average
abundance
≤
1%)
highly
abundant
populations;
vast
majority
which
remains
yet
uncharacterised,
e.g.
candidate
Cloacimonetes.
Using
non-metric
multidimensional
scaling,
observed
microorganisms
grouping
into
clusters
well
reflected
origin
versus
The
calculated
patterns
differed
markedly
between
clusters,
mainly
presence
diverse
dynamic
transient
species.
Core
communities
appeared
relatively
stable
period.In
this
study,
characterised
systems
monitored
1-year
period.
Evidences
support
concept
driving
process,
whereas
dominant
remain
be
characterised.
