Microbial
electrochemical
technologies
(METs)
are
a
promising
approach
in
the
context
of
global
warming
and
circular
economy.
The
achievement
so-much-desired
carbon
neutrality
can
be
reality
by
coupling
capture
METs
with
other
or
not
bioprocesses.
Wastewaters
nowadays
considered
potential
source
energy
(electricity,
hydrogen,
methane)
platform
molecules
(volatile
fatty
acids,
alcohols,
biopolymers,
etc.)
that
upgraded
such
as
microbial
fuel
cells
(MFCs),
electro-synthesis
(MES),
electrolysis
(MECs).
rely
on
use
whole
biocatalysts.
microorganisms
used
systems
called
electroactive
(EAMs)
have
outstanding
ability
to
perform
extracellular
electron
transfer
processes
for
metabolism.
EAM
electrodes
either
terminal
acceptors
(exoelectrogens)
sources
(electrotrophs).
In
this
chapter,
principles
MFC,
MES,
MEC
employed
wastewater
treatment
recovery
discussed.
Furthermore,
main
technical
bottlenecks
encountered
scalability,
process
yields,
interaction
limitations
between
addressed.
Lastly,
ongoing
approaches
perspectives
overcome
critical
issues
upscale
resource
Environmental Science and Pollution Research,
Год журнала:
2024,
Номер
unknown
Опубликована: Март 22, 2024
Abstract
The
biodegradation
of
total
petroleum
hydrocarbon
(TPH)
in
soil
is
very
challenging
due
to
the
complex
recalcitrant
nature
hydrocarbon,
hydrophobicity,
indigenous
microbial
adaptation
and
competition,
harsh
environmental
conditions.
This
work
further
confirmed
that
limited
natural
attenuation
hydrocarbons
(TPHs)
(15%
removal)
necessitates
efficient
bioremediation
strategies.
Hence,
a
scaling-up
experiment
for
testing
optimizing
use
biopiles
TPH
polluted
soils
was
conducted
with
three
500-kg
pilots
soil,
respective
treatments
were
implemented:
including
control
(CT),
bioaugmentation
vermicompost
treatment
(BAVC),
combined
application
BAVC
along
bioelectrochemical
snorkels
(BESBAVC),
all
maintained
at
40%
field
capacity.
study
identified
pilot
scale
level,
successful
can
achieve
90.3%
removal
after
90
days.
BAVC’s
effectiveness
stemmed
from
synergistic
mechanisms.
Introduced
consortia
capable
degradation,
while
provided
essential
nutrients,
enhanced
aeration,
and,
potentially,
acted
as
biosorbent.
it
be
concluded
significantly
enhances
compared
attenuation.
While
snorkel
(BES)
also
showed
significant
removal,
did
not
differ
statistically
individual
BAVC,
under
applied
Further
research
needed
optimize
BES
integration
broader
applicability.
demonstrates
scalable
mechanistically
sound
approach
soil.
ChemEngineering,
Год журнала:
2024,
Номер
8(4), С. 82 - 82
Опубликована: Авг. 15, 2024
Soil
restoration
by
exploiting
the
principles
and
basics
of
electrokinetic
(EK)
has
been
extended
to
involve
several
categories,
such
as
remediation
in
soil
(SEKR),
consolidation,
prevention
pollution,
reclaiming
salt-affected
soil,
dewatering/dryness
wet
soils,
water
reuse,
seed
germination,
sedimentation,
etc.
As
an
extension
our
recently
published
review
articles
on
(SEK)
process
intensification/optimization,
present
illustrates
effect
a
reverse-polarity
mode
(RPM)
efficiency
SEK.
Based
searches
six
database
search
engines,
we
did
not
find
any
relevant
reviews
focused
SEK
improvements
using
RPM.
The
influences
RPM
are
described
various
features,
including
(a)
pollutant
removal
(organic,
inorganic,
mixed
pollutants)
(b)
integration
with
other
processes
(phyto/bioremediation
Fenton
oxidation),
geosynthetics
(consolidation,
stabilization,
sedimentation),
operation
conditions,
properties.
Most
studies
have
organic
pollutants.
Several
benefits
can
be
gained
from
applying
RPM,
controlling
soil’s
temperature,
pH,
moisture
values
at
desirable
levels,
reducing
large
number
chemical
additives,
(c)
high
efficiency,
(d)
maintaining
indigenous
fungal
community’s
appropriate
diversity
abundance,
(e)
stable
higher
electric
current,
(f)
enhancing
microbial
growth,
However,
hindrances
electroosmosis
flow,
relatively
energy
consumption,
microbes
prolonged
experiment
period,
providing
oxygen
for
community
that
may
anaerobic
bacteria,
Finally,
is
considered
important
improving
performance
SEK,
according
experimental
endeavors.
South African Journal of Chemical Engineering,
Год журнала:
2024,
Номер
50, С. 75 - 88
Опубликована: Июль 14, 2024
Applying
soil
electrokinetic
remediation
(SEKR)
is
considered
a
valuable
technique
to
remediate
contaminants-containing
low
permeability
soils
with
the
advantage
of
integration
other
approaches
(e.g.,
chemical,
physical,
and
biological).
The
basics
principles
(EKR)
were
utilized
in
different
fields
interest;
for
example,
sedimentation,
seed
germination,
consolidation,
dewatering,
etc.
present
review
focused
on
role
electrode
approaching/movement
(EAMT)
improving
effectiveness
SEKR.
Based
our
search
collected
literature,
influence
EAMT
efficiency
yielded
no
pertinent
reviews.
We
looked
articles
relevant
six
engines,
chosen
based
data
mentioned
materials
methods
section.
Our
objective
was
illustrate
proper
applicability
from
perspectives
overcome
some
obstacles
reported
traditional
effect
discussed/illustrated
four
including
a)
approaching/moving
anode
(AMAT),
b)
cathode
(AMCT),
c)
electrodes
placement/gap,
d)
continuously
reoriented/rotating,
reciprocating,
rotational
electric
fields.
Several
advantages
could
be
gained
application
current
passing,
pH
reduction,
increasing
heavy
metals
desorption,
elevating
redox
potential,
e)
reducing
energy
consumption,
f)
removal
percentages
contaminants,
g)
extra
chemical
additives
or
modifications,
h)
enhancing
electroosmotic
flow,
i)
installing
auxiliary
presents
more
stable
uniform
field,
j)
ultimately
environmental
risks
metals.
Two
proposed
practical
applications
(in-situ
ex-situ).
Although
there
are
various
achieved
EMAT,
published
research
during
past
31
years
(1993–2023)
few
compared
enhancement
approaches.
