Wastewater
treatment
significantly
contributes
to
greenhouse
gas
emissions,
which
are
further
exacerbated
by
the
environmental
impact
of
external
chemical
additions.
In
response,
microbial
electrochemical
wastewater
refining
has
gained
prominence
at
interdisciplinary
frontier
resource
recovery
and
green
bio-manufacturing.
Significant
progress
been
made
in
utilizing
active
electrodes
stimulate
CO2
fixation
rates,
applying
"binary
electron
donors"
produce
high-value-added
chemicals,
developing
novel
processes
equipment.
This
review
explores
various
aspects
refining,
including
monitoring
water
quality,
synthesis
from
diverse
carbon
sources,
deployment
pilot-scale
systems
for
generating
electricity,
hydrogen,
methane,
as
well
in-situ
remediation.
Additionally,
it
discusses
challenges
future
directions,
highlighting
importance
understanding
mechanisms,
advancing
electrocatalyst
engineering,
innovating
hybrid
processes.
conclusion,
widespread
adoption
is
emphasized
sustainable
production,
ultimately
reducing
impact.
Bioelectrochemistry,
Год журнала:
2025,
Номер
unknown, С. 109000 - 109000
Опубликована: Май 1, 2025
Methanol
assisted
microbial
electrosynthesis
(MES)
enables
butyrate
production
from
carbon
dioxide
and
methanol
using
external
electricity.
However,
the
effects
of
operational
parameters
on
formation
remain
unclear.
By
running
three
flat
plate
MES
reactors
with
fed-batch
mode
at
controlled
pH
values
(5.5,
6
7),
present
study
investigated
influence
by
comparing
process
performance,
community
structure,
genetic
potential.
The
highest
selectivity
(87
%
basis)
rate
0.3
g
L-1
d-1
were
obtained
6.
At
7,
a
comparable
was
achieved,
yet
lower
(70
%)
accompanied
acetate
production.
Butyrate
considerably
hindered
5.5,
reaching
0.1
d-1,
while
reached
up
to
81
%.
CO2
consumption
increased
pH,
along
more
negative
cathodic
potential
redox
Furthermore,
affected
thermodynamical
feasibility
involved
reactions.
results
metagenomic
analyses
suggest
that
Eubacterium
callanderi
dominated
communities
all
values,
which
responsible
for
assimilation
via
Wood-Ljungdahl
pathway
likely
main
producer
reverse
β-oxidation
pathway.
Wastewater
treatment
significantly
contributes
to
greenhouse
gas
emissions,
which
are
further
exacerbated
by
the
environmental
impact
of
external
chemical
additions.
In
response,
microbial
electrochemical
wastewater
refining
has
gained
prominence
at
interdisciplinary
frontier
resource
recovery
and
green
bio-manufacturing.
Significant
progress
been
made
in
utilizing
active
electrodes
stimulate
CO2
fixation
rates,
applying
"binary
electron
donors"
produce
high-value-added
chemicals,
developing
novel
processes
equipment.
This
review
explores
various
aspects
refining,
including
monitoring
water
quality,
synthesis
from
diverse
carbon
sources,
deployment
pilot-scale
systems
for
generating
electricity,
hydrogen,
methane,
as
well
in-situ
remediation.
Additionally,
it
discusses
challenges
future
directions,
highlighting
importance
understanding
mechanisms,
advancing
electrocatalyst
engineering,
innovating
hybrid
processes.
conclusion,
widespread
adoption
is
emphasized
sustainable
production,
ultimately
reducing
impact.
