Environmental Advances,
Год журнала:
2024,
Номер
16, С. 100537 - 100537
Опубликована: Апрель 27, 2024
In
the
context
of
bioelectrochemical
systems
(BES),
a
profound
understanding
taxonomic
composition
within
indigenous
microbial
communities
is
crucial.
Their
metabolic
versatility
assumes
foundational
role
in
dictating
functionality
BES,
yielding
diverse
applications
for
bioenergy
production
and
bioremediation
anthropogenically
impacted
estuaries.
Employing
high-throughput
sequencing
V3-V4
region
16S
rRNA
predictive
metagenomic
analyses
three
different
estuaries
samples
(eutrophicated
urban
reservoir,
mud
volcano
river,
its
river
mouth),
this
study
delves
into
intricate
interplay
between
these
their
functions
response
to
human-induced
perturbations,
with
specific
focus
on
applicability
BES.
Our
findings
illuminate
remarkable
distinctions
among
samples,
manifesting
variations
functional
pathways
respective
ecosystems.
The
volcano-affected
characterized
by
highest
diversity,
exhibited
most
array
processes,
prominently
dominated
chemoheterotrophy
(67.43%).
contrast,
mouth
displayed
distinct
penchant
autotrophy
(33.33%).
eutrophicated
reservoir
showcased
balanced
coexistence
(41.18%)
(35.29%).
Regarding
potential
BES
application,
metabolism
were
associated
anodic
activity,
while
cathodic
activity
was
restricted
relatives.
results
suggested
that
potentially
used
reactions
as
electrogens
generate
bioelectricity
reduce
pollutants.
Business Strategy and the Environment,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 31, 2025
ABSTRACT
This
study
comprehensively
investigates
the
potential
of
food
industrial
sludge
as
a
renewable
resource
within
expanding
global
industry.
Grounded
in
theoretical
framework
circular
economy
and
sustainability
sciences,
it
delves
into
composition
sludge,
comprising
diverse
organic
(proteins,
carbohydrates,
lipids,
fibers)
inorganic
elements
(minerals,
heavy
metals,
trace
elements),
highlighting
its
environmental
economic
implications.
The
focus
is
on
evaluating
key
utilization
methods—anaerobic
digestion,
thermal
treatment
(pyrolysis
gasification),
composting,
bioconversion—for
transforming
valuable
resources
such
biogas,
biochar,
compost.
These
methods
are
assessed
based
their
alignment
with
sustainable
waste
management
theories
practices,
particularly
concerning
recovery.
Empirical
data
from
case
studies
industry
reports
incorporated
to
provide
concrete
examples
successful
practices.
For
instance,
empirical
indicate
that
anaerobic
digestion
can
reduce
volume
by
up
70%
generate
biogas
an
energy
yield
approximately
25
MJ
per
kg
dry
sludge.
Pyrolysis
sequester
3
t
CO
2
ton
biochar
produced.
demonstrate
considerable
promise
for
production,
nutrient
recovery,
reducing
greenhouse
gas
emissions,
supporting
approach.
addresses
challenges
management,
including
compositional
variability,
contaminant
presence,
necessity
effective
mitigate
risks
water
soil
pollution
odor
issues.
Findings
not
only
viable
but
also
essential
minimizing
impact,
conserving
finite
resources,
promoting
research
contributes
insights
policymakers,
stakeholders,
scientists,
enriching
body
knowledge
framed
context
Sustainable
Development
Goals
(SDGs),
SDG
6
(Clean
Water
Sanitation),
7
(Affordable
Clean
Energy),
12
(Responsible
Consumption
Production).
Annals of Microbiology,
Год журнала:
2024,
Номер
74(1)
Опубликована: Июнь 3, 2024
Abstract
Microbial
fuel
cells
(MFCs),
which
use
bacterial
electron
transport
mechanisms
to
generate
energy,
have
become
a
viable
technology
for
renewable
energy
production.
This
review
investigates
the
evolutionary
and
functional
connections
between
transduction
mitochondrial
chains,
building
on
endosymbiont
theory
of
eukaryotic
cell
evolution.
The
conserved
features
similarities
prokaryotic
pathways
were
elucidated,
highlighting
their
common
origins
roles
in
cellular
bioenergetics.
discussion
explores
essential
governing
movement
electrons
ions
across
biological
membranes,
crucial
generating
maintaining
electrochemical
gradients
bacteria
mitochondria.
Capitalizing
these
insights,
we
explore
applications
electrogenic
MFCs
electricity
generation.
Optimal
conditions
enhancing
transfer
electrode
surfaces
are
identified,
paving
way
improved
MFC
performance.
Potential
large-scale
implementations
wastewater
treatment,
biosensing,
bioremediation
contaminated
environments
discussed,
underscoring
versatility
environmental
benefits.
importance
investigating
bioenergetic
at
both
molecular
scales
fully
harnessing
capabilities
microbial
conversion
systems
is
highlighted
this
review.
By
bridging
gap
fundamental
processes
sustainable
technologies,
aim
advance
solutions
that
harness
remarkable
microorganisms.
ENVIRONMENTAL SYSTEMS RESEARCH,
Год журнала:
2024,
Номер
13(1)
Опубликована: Окт. 15, 2024
Abstract
The
quest
for
sustainable
agricultural
practices
has
led
to
a
surge
in
research
focused
on
innovative
wastewater
treatment
methods.
This
review
explores
the
emerging
biological
approaches
designed
address
challenges
of
eco-friendly
and
subsequent
reuse.
investigation
centers
around
three
novel
techniques:
constructed
wetlands,
algae-based
systems,
microbial
fuel
cells.
Constructed
wetlands
(CWs)
mimic
natural
processes
treat
wastewater,
providing
habitat
various
plant
species
that
collaboratively
remove
contaminants.
Algae-based
systems(ABs)
harness
photosynthetic
prowess
algae
absorb
nutrients
pollutants,
producing
biomass
can
be
repurposed.
Meanwhile,
cells
(MFCs)
employ
microorganisms
break
down
organic
matter
while
generating
electricity
as
valuable
byproduct.
aims
provide
insights
into
potential
these
methods
revolutionize
management
agriculture.
By
mitigating
environmental
impact,
conserving
water
resources,
yielding
reusable
outputs,
techniques
will
offer
pathway
towards
addressing
pressing
enhancing
overall
ecological
balance.
Applied and Environmental Microbiology,
Год журнала:
2025,
Номер
91(1)
Опубликована: Янв. 14, 2025
Electroactive
organisms
contribute
to
metal
cycling,
pollutant
removal,
and
other
redox-driven
environmental
processes
via
extracellular
electron
transfer
(EET).
Unfortunately,
developing
genotype-phenotype
relationships
for
electroactive
is
challenging
because
EET
necessarily
removed
from
the
cell
of
origin.
Microdroplet
emulsions,
which
encapsulate
individual
cells
in
aqueous
droplets,
have
been
used
study
a
variety
phenotypes
but
not
applied
investigate
EET.
Here,
we
describe
development
microdroplet
emulsion
system
sort
enrich
EET-capable
complex
populations.
We
validated
our
using
model
electrogen
Shewanella
oneidensis
described
tooling
benchtop
microfluidic
oxygen-limited
conditions.
demonstrated
enrichment
strains
exhibiting
mixed
wild-type
EET-deficient
As
proof-of-concept
application,
collected
samples
iron
sedimentation
Town
Lake
(Austin,
TX)
subjected
them
enrichment.
measured
an
increase
sorted
population
that
was
distinct
compared
growing
bulk
culture
with
Fe(III)
as
sole
acceptor.
Finally,
two
bacterial
species
previously
shown
be
EET-capable,
Cronobacter
sakazakii
Vagococcus
fessus,
were
further
cultured
characterized
electroactivity.
Our
results
demonstrate
utility
emulsions
isolating
identifying
bacteria.IMPORTANCEThis
work
outlines
new
high-throughput
method
bacteria
play
key
roles
trafficking,
soil
remediation,
degradation.
Many
existing
methods
are
coupled
microbial
growth
fitness-as
result,
contributions
weak
or
poor-growing
electrogens
often
muted.
However,
(EET)
has
historically
difficult
since
reduction
trace
back
parent
there
no
suitable
fluorescent
readouts
circumvents
these
challenges
by
utilizing
wherein
single
statistically
isolated
pico-
nano-liter-sized
droplet.
Then,
fluorescence
obtained
copper
reduction,
can
fluorescently
gated
performance.
Utilizing
technique,
characterize
unrecognized
fessus
sakazakii.
International Journal of Energy Research,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
Energy
crisis
and
wastewater
treatment
are
critical
global
issues.
In
this
study,
a
novel
separator
was
made
by
boiling
cotton
rope
with
solutions
of
various
salts
their
concentrations.
It
then
employed
in
dual‐chamber
microbial
fuel
cell
(MFC)
to
treat
municipal
collected
from
25
Area
Wah
Cantt,
Punjab,
Pakistan.
Batch
scale
experiments
were
carried
out
evaluate
the
effect
variables,
that
is,
different
(NaCl,
KCl,
MgCl
2
)
concentrations
(0.2,
0.5,
1
M)
used
separator,
volume
(50,
500,
1000
mL),
aluminum
mesh
thickness
(0.6,
0.8,
mm)
on
MFC
performance
terms
current
generation
for
7
days.
Analysis
showed
among
six
studied
physicochemical
parameters,
only
two,
biological
oxygen
demand
(BOD)
chemical
(COD)
above
permissible
limits
National
Environmental
Quality
Standards
(NEQS).
Results
after
containing
0.5
M
NaCl
produced
significantly
(
p
<
0.05)
high
68.16
µA
as
compared
other
concentrations,
whereas
COD
BOD
reduced
up
124.15
62.12
mg
L
−1
,
respectively.
A
mL
generated
83.41
volumes,
where
residual
values
123.25
59.56
An
mm
103
µA,
while
120.89
68.93
achieved
values,
concluded
enhanced
an
increase
thickness.
Therefore,
it
is
recommended
further
pilot‐scale
continuous
studies
be
implement
research
larger
scale.
