Biotechnology for Biofuels and Bioproducts,
Journal Year:
2025,
Volume and Issue:
18(1)
Published: Jan. 21, 2025
This
study
explores
the
use
of
conductive
material
in
scaling
up
anaerobic
digestion
for
enhanced
biogas
production.
Focusing
on
Direct
Interspecies
Electron
Transfer
(DIET),
research
employs
a
syntrophic
DIET-able
consortium
formed
by
Shewanella
oneidensis
and
Methanosarcina
barkerii
3.8-L
experiments
utilizing
reticulated
vitreous
carbon
(RVC)
as
material.
In
short-term
tests
with
acetate
co-culture
RVC
resulted
86%
higher
maximum
velocity
methane
production,
while
long
term
real
feed
13%
increased
rate
was
observed:
addition
1.77
(S/m)*m2
faster
production
2.39
mL/gVS*h
compared
to
2.08
reference.
The
experimental
conditions
inoculum
gave
benefit
terms
process
reference,
considering
fate,
among
dominant
taxa
at
end
experiment,
outcompeted.
Among
methanogenesis
pathways,
an
increase
hydrogenotrophic
has
been
observed
presence
Further
is
needed
understand
role
sulfur
compounds
Utilization
augment
yielded
interesting
results
real-scale
application.
As
added
carrier,
remains
unaltered
can
be
readily
recuperated
reused
multiple
times.
Energy & Environmental Science,
Journal Year:
2019,
Volume and Issue:
12(6), P. 1751 - 1779
Published: Jan. 1, 2019
Biochar,
a
bio-carbon
with
abundant
surface
functional
groups
and
easily
tuned
porosity
produced
from
biomass,
shows
great
application
potential
in
energy
storage
conversion.
In
this
review,
recent
advances
the
applications
of
biochar-based
materials
various
conversion
fields
are
summarized,
highlighting
mechanisms
open
questions
current
applications.
Environmental Science & Technology,
Journal Year:
2018,
Volume and Issue:
52(18), P. 10241 - 10253
Published: Aug. 17, 2018
Conductive
materials
(CM)
have
been
extensively
reported
to
enhance
methane
production
in
anaerobic
digestion
processes.
The
occurrence
of
direct
interspecies
electron
transfer
(DIET)
microbial
communities,
as
an
alternative
or
complementary
indirect
(via
hydrogen
formate),
is
the
main
explanation
given
justify
improvement
production.
Not
disregarding
that
DIET
can
be
promoted
presence
certain
CM,
it
surely
does
not
explain
all
observations.
In
fact,
methanogenic
environments
was
only
unequivocally
demonstrated
cocultures
Geobacter
metallireducens
with
Methanosaeta
harundinacea
Methanosarcina
barkeri
and
frequently
sp.
are
detected
improved
driven
systems.
Furthermore,
conductive
carbon
nanotubes
were
shown
accelerate
activity
methanogens
growing
pure
cultures,
where
expected
occur,
hydrogenotrophic
ubiquitous
full-scale
digesters
treating
for
example
brewery
wastewaters,
indicating
important
mechanism
those
This
paper
presents
overview
effect
several
iron-based
carbon-based
CM
bioengineered
systems,
focusing
on
communities'
changes.
Control
assays,
fundamental
elements
support
major
conclusions
experiments,
critically
revised
discussed.
