Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(6), P. 3407 - 3418
Published: March 3, 2022
Although
many
source
waterbodies
face
nitrogen
pollution
problems,
the
lack
of
organic
electron
donors
causes
difficulties
when
aerobic
denitrifying
bacteria
are
used
to
treat
micro-polluted
water.
Different
forms
iron
with
granular
activated
carbon
(AC)
as
carriers
were
stimulate
aboriginal
microorganisms
for
purification
Compared
iron-absent
AC
system,
targeted
pollutants
significantly
removed
(75.76%
nitrate
nitrogen,
95.90%
total
phosphorus,
and
80.59%
chemical
oxygen
demand)
in
sponge-iron-modified
which
indicated
that
promoted
physical
removal
pollutants.
In
addition,
high-throughput
sequencing
showed
bacterial
distribution
interaction
changed
by
ion
dosage,
was
beneficial
pollutant
transformation
reduction.
Microbial
functions,
such
expression
functional
enzymes
responsible
ammonia,
highly
efficient
iron-applied
systems.
This
study
provides
an
innovative
strategy
strengthen
situ
remediation
micro-pollution
waterbodies.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(13), P. 5252 - 5263
Published: March 21, 2023
The
key
limiting
factors
in
the
treatment
of
low
C/N
micropolluted
water
bodies
are
deficient
essential
electron
donors
for
nitrogen
removal
processes.
An
iron/activated
carbon
aquagel
(IACA)
was
synthesized
as
a
slowly
released
inorganic
donor
to
enhance
aerobic
denitrification
performance
treatment.
efficiency
IACA
reactors
enhanced
by
more
than
56.72%
and
highest
94.12%
accomplished
compared
with
those
control
reactors.
Moreover,
CODMn
improved
34.32%
Illumina
MiSeq
sequencing
consequence
explained
that
denitrifying
bacteria
facultative
denitrification,
iron
oxidation,
reduction
function
were
located
dominant
species
niches
(e.g.,
Pseudomonas,
Leptothrix,
Comamonas).
diversity
richness
bacterial
communities
Network
analysis
indicated
consortia
presented
complicated
co-occurrence
structure.
potential
long-term
operation.
This
study
affords
pathway
utilize
IACA,
promoting
during
body
