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.
In
biogas
plants,
complex
microbial
communities
produce
methane
and
carbon
dioxide
by
anaerobic
digestion
of
biomass.
For
the
characterization
functional
networks,
samples
11
reactors
were
analyzed
using
a
high-resolution
metaproteomics
pipeline.
Examined
methanogenesis
archaeal
either
mixotrophic
or
strictly
hydrogenotrophic
in
syntrophy
with
bacterial
acetate
oxidizers.
Mapping
identified
metaproteins
process
steps
described
Anaerobic
Digestion
Model
1
confirmed
its
main
assumptions
also
proposed
some
extensions
such
as
syntrophic
oxidation
fermentation
alcohols.
Results
indicate
that
shaped
well
competition
phage-host
interactions
causing
cell
lysis.
families
Bacillaceae,
Enterobacteriaceae,
Clostridiaceae,
number
phages
exceeded
up
to
20-fold
host
cells.
Phage-induced
lysis
might
slow
down
conversion
substrates
biogas,
though,
it
could
support
growth
auxotrophic
microbes
cycling
nutrients.
Water Research,
Год журнала:
2019,
Номер
160, С. 249 - 258
Опубликована: Май 24, 2019
Decentralized
wastewater
treatment
represents
a
promising
sustainable
option
for
future
management.
Blackwater
collected
from
toilets
contains
high
concentrations
of
organic
matter,
ideal
energy
recovery
using
anaerobic
digestion.
Up-flow
sludge
blanket
(UASB)
reactors
treating
conventional
toilet
(CT,
9
L
water
per
flush)
and
vacuum
(VT,
1
blackwater
with
increments
loadings
were
successfully
operated
to
steady
state
in
three
phases.
The
loading
rates
maintained
at
comparable
levels
between
the
two
reactors.
methanisation
0.23–0.29
0.41–0.48
gCH4-COD/gfeedCOD
CT
VT
reactors,
COD
removal
72%
89%,
respectively.
enriched
microbial
consortia
community
dynamics
under
different
phases
compared.
rank
abundance
distributions
alpha-diversity
showed
that
archaeal
communities
predominated
by
mono-enrichments
both
while
bacterial
lower
diversity
reactor.
Through
principal
coordinates
analysis
(beta-diversity),
clear
divergences
revealed,
developed
slower
rate
than
community.
archaea
hydrogenotrophic
methanogens,
Methanolinea
reactor
(56.6%),
Methanogenium
(62.3%).
bacteria
Porphyromonadaceae
(15.9%)
(13.4%)
sulfate-reducing
reactor,
Fibrobacteraceae
(13.8%).
Links
ammonia
stress
discussed.
Isotope
fraction
biogas
slight
shift
acetoclastic
methanogenesis
methanogenesis.
A
closer
look
into
predicted
metagenomic
functional
profiles
agreeing
results,
where
fhs
gene
abundances
higher
We
demonstrated
types
consortia,
probably
due
sulfate
loadings,
which
should
be
taken
consideration
practical
applications.
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.
