Molecules,
Journal Year:
2023,
Volume and Issue:
28(9), P. 3883 - 3883
Published: May 4, 2023
Anaerobic
digestion
(AD)
is
a
triple-benefit
biotechnology
for
organic
waste
treatment,
renewable
production,
and
carbon
emission
reduction.
In
the
process
of
anaerobic
digestion,
pH,
temperature,
load,
ammonia
nitrogen,
VFAs,
other
factors
affect
fermentation
efficiency
stability.
The
balance
between
generation
consumption
volatile
fatty
acids
(VFAs)
in
key
to
stable
AD
operation.
However,
accumulation
VFAs
frequently
occurs,
especially
propionate,
because
its
oxidation
has
highest
Gibbs
free
energy
when
compared
VFAs.
order
solve
this
problem,
some
strategies,
including
buffering
addition,
suspension
feeding,
decreased
loading
rate,
so
on,
have
been
proposed.
Emerging
methods,
such
as
bioaugmentation,
supplementary
trace
elements,
addition
electronic
receptors,
conductive
materials,
degasification
dissolved
hydrogen,
recently
researched,
presenting
promising
results.
But
efficacy
these
methods
still
requires
further
studies
tests
regarding
full-scale
application.
main
objective
paper
provide
comprehensive
review
mechanisms
propionate
generation,
metabolic
pathways
influencing
during
process,
recent
literature
experimental
research
related
various
strategies
enhancing
biodegradation.
issues
that
must
be
addressed
future
focus
are
identified,
potential
directions
development
predicted.
Fermentation,
Journal Year:
2025,
Volume and Issue:
11(3), P. 152 - 152
Published: March 18, 2025
Fungal
chlamydospores
are
asexual
spores
formed
by
fungi
under
adverse
conditions
and
could
be
used
in
biological
pretreatment
for
biogas
projects
fed
lignocellulosic
substrates.
In
this
study,
Trichoderma
viride
(Tv)
were
as
the
agent
to
enhance
methane
yield
of
spent
mushroom
substrates
(SMSs).
Lignocellulosic
composition,
methanogenesis
performance,
anaerobic
microbial
communities
investigated
different
Tv
durations
(0
h,
12
24
48
96
192
h).
The
results
showed
that
optimal
duration
was
cumulative
reached
173.4
mL/gVS,
which
16.8%
higher
than
control.
A
longer
h
not
conducive
methanogenesis.
Sequencing
analysis
directly
proportional
relative
abundance
at
beginning
digestion.
When
initial
50%,
became
absolute
dominant
fungus
with
an
97%
fungal
later
stage
correlation
network
among
fungi,
bacteria,
archaea
related
11
genera,
through
these
taxa,
affected
58%
taxa
whole
network.
Cost
accounting
has
a
net
income
45.5
CNY/1000
kg
SMS,
is
promising
technology.
This
study
provides
important
guidance
use
also
promotes
understanding
Molecules,
Journal Year:
2023,
Volume and Issue:
28(9), P. 3883 - 3883
Published: May 4, 2023
Anaerobic
digestion
(AD)
is
a
triple-benefit
biotechnology
for
organic
waste
treatment,
renewable
production,
and
carbon
emission
reduction.
In
the
process
of
anaerobic
digestion,
pH,
temperature,
load,
ammonia
nitrogen,
VFAs,
other
factors
affect
fermentation
efficiency
stability.
The
balance
between
generation
consumption
volatile
fatty
acids
(VFAs)
in
key
to
stable
AD
operation.
However,
accumulation
VFAs
frequently
occurs,
especially
propionate,
because
its
oxidation
has
highest
Gibbs
free
energy
when
compared
VFAs.
order
solve
this
problem,
some
strategies,
including
buffering
addition,
suspension
feeding,
decreased
loading
rate,
so
on,
have
been
proposed.
Emerging
methods,
such
as
bioaugmentation,
supplementary
trace
elements,
addition
electronic
receptors,
conductive
materials,
degasification
dissolved
hydrogen,
recently
researched,
presenting
promising
results.
But
efficacy
these
methods
still
requires
further
studies
tests
regarding
full-scale
application.
main
objective
paper
provide
comprehensive
review
mechanisms
propionate
generation,
metabolic
pathways
influencing
during
process,
recent
literature
experimental
research
related
various
strategies
enhancing
biodegradation.
issues
that
must
be
addressed
future
focus
are
identified,
potential
directions
development
predicted.
