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.
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.
