Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
319, P. 100555 - 100555
Published: June 20, 2024
Propionate
production
and
consumption
are
influenced
by
thermodynamic
constraints,
microbial
competitions,
metabolic
inhibition.
Accumulation
of
propionate
in
wastewater
can
destabilize
anaerobic
digestion
lead
to
process
failure.
Anaerobic
is
one
the
viable
biological
methods
for
its
recovery
utilization.
Additives
have
been
shown
modulate
consumption,
effectively
influencing
overall
performance
digestion.
This
mini
review
systematically
examines
application
various
additives
their
effects
on:
(I)
(less
CH4
more
propionate)
(II)
degradation
CH4)
goals
studied
listed
recent
studies
on
most
used
classified
them
according
impact
concentration.
To
our
knowledge,
limited
research
has
conducted
role
recovery.
No
reviewed
from
or
potential
mitigate
inhibitory
effects.
enables
researchers
select
suitable
additive
recover
boost
mitigating
inhibition,
as
well
discussing
modern
bioreactors.
AIMS Microbiology,
Journal Year:
2024,
Volume and Issue:
10(3), P. 723 - 755
Published: Jan. 1, 2024
<p>Bioremediation
stands
as
a
promising
solution
amid
the
escalating
challenges
posed
by
environmental
pollution.
Over
past
25
years,
influx
of
synthetic
chemicals
and
hazardous
contaminants
into
ecosystems
has
required
innovative
approaches
for
mitigation
restoration.
The
resilience
these
compounds
stems
from
their
non-natural
existence,
distressing
both
human
health.
Microbes
take
center
stage
in
this
scenario,
demonstrating
ability
biodegradation
to
catalyze
remediation.
Currently,
scientific
community
supports
straight
connection
between
biorefinery
bioremediation
concepts
encourage
circular
bio/economy
practices.
This
review
aimed
give
pre-overview
state
art
regarding
main
microorganisms
employed
processes
different
applied.
Moreover,
focus
been
given
implementation
novel
approach
agro-industrial
waste
management,
highlighting
how
it
is
possible
reduce
pollution
while
still
obtaining
value-added
products
with
commercial
value,
meeting
goals
bioeconomy.
drawbacks
feasibility
were
also
reported.</p>
Environmental Microbiology Reports,
Journal Year:
2024,
Volume and Issue:
16(3)
Published: May 10, 2024
Abstract
Syntrophic
interactions
are
key
in
anaerobic
food
chains,
facilitating
the
conversion
of
complex
organic
matter
into
methane.
A
typical
example
involves
acetogenic
bacteria
converting
fatty
acids
(e.g.,
butyrate
and
propionate),
a
process
thermodynamically
reliant
on
H
2
consumption
by
microorganisms
such
as
methanogens.
While
most
studies
focus
‐interspecies
transfer
between
these
groups,
knowledge
acetate
cross‐feeding
systems
is
lacking.
This
study
investigated
oxidation
co‐cultures
Syntrophomonas
wolfei
Methanospirillum
hungatei
,
both
with
without
addition
scavenger
Methanothrix
soehngenii
.
Growth
gene
expression
patterns
S.
M.
were
followed
two
conditions.
Although
rates
remained
constant,
genes
degradation
pathway
less
expressed
presence
including
involved
reverse
electron
transport.
Higher
type
IV‐pili
operon
hints
to
potential
for
direct
interspecies
an
energetically
advantageous
relationship
microorganisms.
Overall,
positively
influenced
energy
metabolism
highlighted
relevance
scavengers
when
investigating
syntrophic
acid
degradation.
