Fermentation,
Год журнала:
2025,
Номер
11(3), С. 117 - 117
Опубликована: Март 2, 2025
Traditional
anaerobic
digestion
(AD)
technology
continues
to
have
severe
limitations
in
terms
of
complicated
substrate
degradation
efficiency
and
methane
production.
This
study
optimizes
the
AD
system
using
corn
straw
cattle
manure
as
substrates
by
introducing
an
exogenous
N-Hexanoyl-L-Homoserine
lactone
(C6-HSL)
signaling
molecule
concert
with
applied
external
voltage
0.8
V,
systematically
investigating
its
impact
on
methanogenic
performance
microbial
community
dynamics.
The
results
show
that
combined
regulation
significantly
increased
production
(by
29.74%)
utilization
rate
74.73%)
while
preventing
acid
inhibition
ammonia
nitrogen
inhibition.
Mechanistic
analysis
revealed
enhanced
system’s
electrocatalytic
activity,
C6-HSL
further
facilitated
electron
transfer
biofilm
electrode.
notably
enriched
hydrogenotrophic
methanogens
(with
Methanobacterium
predominating
cathode
Methanobrevibacter
digestate),
establishing
a
stable
metabolic
cooperative
network
both
electrode
digestate,
optimizing
methanogenesis
pathway,
enhancing
synergistic
effects
among
communities
robustness.
uncovers
enhancement
mechanism
voltage,
providing
new
technological
pathways
theoretical
support
for
efficient
conversion
low-quality
biomass
resources
clean
energy.
