Processes,
Journal Year:
2023,
Volume and Issue:
11(3), P. 759 - 759
Published: March 4, 2023
Direct
interspecies
electron
transfer
(DIET),
which
does
not
involve
mediation
by
carriers,
is
realized
the
addition
of
conductive
materials
to
an
anaerobic
digester,
then
activates
syntrophism
between
acetogenic
and
methanogenic
microorganisms.
This
study
aimed
investigate
effect
two
materials,
zero-valent
iron
(ZVI)
magnetite,
on
methane
production
microbial
consortium
via
DIET
in
digestion
food
wastewater.
The
operation
a
batch
reactor
for
wastewater
without
yielded
biochemical
potential
(Bu),
maximum
rate
(Rm),
lag
phase
time
(λ)
0.380
Nm3
kg−1-VSadded,
15.73
mL
day−1,
0.541
days,
respectively.
Upon
1.5%
ZVI,
Bu
Rm
increased
significantly
0.434
kg−1-VSadded
19.63
respectively,
λ
was
shortened
0.065
days.
Simultaneously,
Methanomicrobiales
from
26.60%
46.90%
Methanosarcinales
decreased
14.20%
1.50%
as
ZVI
input
0%
1.50%.
Magnetite,
at
concentration
1.00%,
0.431
18.44
However,
although
magnetite
improves
efficiency
methanogenesis
DIET,
thereof
methanogen
community
remains
unclear.
Fermentation,
Journal Year:
2023,
Volume and Issue:
9(5), P. 436 - 436
Published: May 2, 2023
Anaerobic
digestion
of
animal
manure
results
in
the
production
renewable
energy
(biogas)
and
nutrient-rich
biofertilizer.
A
further
benefit
technology
is
decreased
greenhouse
gas
emissions
that
otherwise
occur
during
storage.
Since
makes
anaerobic
cost-efficient
advance
for
higher
methane
yields,
it
utmost
importance
to
find
strategies
improve
bottlenecks
such
as
degradation
lignocellulose,
e.g.,
cattle
manure,
or
circumvent
microbial
inhibition
by
ammonia
caused
nitrogen
compounds
in,
chicken,
duck,
swine
manure.
This
review
summarizes
characteristics
different
manures
provides
insight
into
underlying
mechanisms
causing
challenging
problems
with
process.
particular
focus
put
upon
retention
time
organic
loading
rate
high-ammonia
processes,
which
should
be
designed
optimized
support
microorganisms
tolerate
high
conditions,
syntrophic
acetate
oxidizing
bacteria
hydrogenotrophic
methanogens.
Furthermore,
operating
managements
used
stabilize
increase
yield
including
supporting
materials,
addition
trace
elements,
incorporation
removal
technologies,
are
summarized.
The
finalized
a
discussion
research
needed
outline
conceivable
operational
methods
process
instability
performance.
