ACS Sustainable Chemistry & Engineering,
Journal Year:
2022,
Volume and Issue:
10(12), P. 3935 - 3950
Published: March 16, 2022
A
nanomaterial–living
cell
biohybrid
system
is
an
efficient
energy
conversion
method
due
to
enhanced
interactions
between
inorganic
materials
and
bacteria.
However,
inefficient
electron
transfer
at
the
interface
of
remains
as
a
limiting
factor.
Herein,
inorganic–biologic
hybrid
was
proposed
by
combining
typical
electroactive
bacterium,
Geobacter
sulfurreducens,
highly
conductive
N-doped
Fe3O4
with
carbon
dot
shell
(Fe3O4@CD)
boost
in
bioelectrochemical
systems
(including
microbial
electrolytic
cells
electro-methanogenesis).
One-pot-synthesized
Fe3O4@CDs
extracellular
forming
interaction
network
proteins
inside
outside
G.
sulfurreducens.
In
cell,
maximum
current
Fe3O4@CDs-fed
6.37
times
higher
than
that
control
group
without
nanoparticle
addition.
This
performance
accompanied
bioactivity,
cellular
adhesion,
lower
biofilm
resistance.
The
sulfurreducens–Fe3O4@CDs
biohybrids
supplemented
during
electro-methanogenesis
remained
stable
on
anodes,
which
promoted
syntrophy.
metabolic
methanogenesis
pathways
are
strongly
related
ability
demonstrates
new
strategy
promote
through
constructed
system.
Biomass Conversion and Biorefinery,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 16, 2024
Abstract
In
recent
years,
the
sustainable
metal
oxide
nanoparticle
synthesis
using
various
plant
leaf
extracts
as
reducing
agents
has
gained
significant
attention
in
field
of
renewable
energy
research.
This
study
explores
biohydrogen
yield
enhancement
potential
two
types
nanoparticles
derived
from
olive
leaves.
Synthesized
are
characterized
by
SEM,
EDX,
and
FTIR
spectrum
analyses;
these
exhibit
mean
dimensions
385
nm
292
nm.
Fermentation
experiments
were
conducted
varying
ratios
ranging
50
to
500
mg/L
determine
impact
on
bio-hydrogen
yield.
Remarkably,
with
usage
200
nickel
ferrite
boosted
47%,
while
cobalt
increased
it
41%.
These
findings
highlight
sustainably
synthesized
nanoparticles,
especially
those
leaves,
catalysts
for
enhancing
production
dark
fermentation
processes.
research
offers
promising
insights
into
eco-friendly
bioenergy
generation.
Fermentation,
Journal Year:
2022,
Volume and Issue:
8(7), P. 325 - 325
Published: July 11, 2022
Utilising
‘wastes’
as
‘resources’
is
key
to
a
circular
economy.
While
there
are
multiple
routes
waste
valorisation,
anaerobic
digestion
(AD)—a
biochemical
means
breakdown
organic
wastes
in
the
absence
of
oxygen—is
favoured
due
its
capacity
handle
variety
feedstocks.
Traditional
AD
focuses
on
production
biogas
and
fertiliser
products;
however,
such
low-value
products
combined
with
longer
residence
times
slow
kinetics
have
paved
way
explore
alternative
product
platforms.
The
intermediate
steps
conventional
AD—acidogenesis
acetogenesis—have
capability
produce
biohydrogen
volatile
fatty
acids
(VFA)
which
gaining
increased
attention
higher
energy
density
(than
biogas)
market
value,
respectively.
This
review
hence
focusses
specifically
VFAs
from
wastes.
With
revived
interest
these
products,
critical
analysis
recent
literature
needed
establish
current
status.
Therefore,
intensification
strategies
this
area
involving
three
main
streams:
substrate
pre-treatment,
parameters
recovery
discussed
detail
based
reported
last
decade.
techno-economic
aspects
future
pointers
clearly
highlighted
drive
research
forward
relevant
areas.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2022,
Volume and Issue:
10(12), P. 3935 - 3950
Published: March 16, 2022
A
nanomaterial–living
cell
biohybrid
system
is
an
efficient
energy
conversion
method
due
to
enhanced
interactions
between
inorganic
materials
and
bacteria.
However,
inefficient
electron
transfer
at
the
interface
of
remains
as
a
limiting
factor.
Herein,
inorganic–biologic
hybrid
was
proposed
by
combining
typical
electroactive
bacterium,
Geobacter
sulfurreducens,
highly
conductive
N-doped
Fe3O4
with
carbon
dot
shell
(Fe3O4@CD)
boost
in
bioelectrochemical
systems
(including
microbial
electrolytic
cells
electro-methanogenesis).
One-pot-synthesized
Fe3O4@CDs
extracellular
forming
interaction
network
proteins
inside
outside
G.
sulfurreducens.
In
cell,
maximum
current
Fe3O4@CDs-fed
6.37
times
higher
than
that
control
group
without
nanoparticle
addition.
This
performance
accompanied
bioactivity,
cellular
adhesion,
lower
biofilm
resistance.
The
sulfurreducens–Fe3O4@CDs
biohybrids
supplemented
during
electro-methanogenesis
remained
stable
on
anodes,
which
promoted
syntrophy.
metabolic
methanogenesis
pathways
are
strongly
related
ability
demonstrates
new
strategy
promote
through
constructed
system.
