Critical Reviews in Environmental Science and Technology,
Год журнала:
2024,
Номер
54(23), С. 1672 - 1691
Опубликована: Май 16, 2024
Biological
nitrogen
removal
is
a
classic
technique
for
removing
from
wastewater
that
has
been
studied
extensively
and
gives
high
rate,
energy
efficiency,
relatively
environmentally
benign.
Using
biological
processes
to
treat
the
diverse
components
of
requires
thorough
understanding
microorganisms
pathways
involved.
However,
information
regarding
participating
in
remains
limited.
This
review
presents
current
knowledge
researches
into
these
microorganisms,
including
ammonia
oxidizing
bacteria,
archaea,
complete
oxidation
nitrite-oxidizing
anaerobic
ammonium
denitrifying
heterotrophic
nitrification-aerobic
denitrification
bacteria.
The
metabolic
enzymatic
reactions
involved
cycle
abovementioned
are
demonstrated.
key
enzymes,
functional
genes,
removal-related
were
discussed.
Additionally,
advantages
different
oxidation,
denitrifying,
HN-AD
described.
Finally,
limitations
strategies
unraveling
presented.
aim
improve
our
principle
advanced
allow
possible
improvements
treatment
be
identified.
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
The
recently
proposed
partial
denitrification
(PD),
terminating
nitrate
reduction
to
nitrite,
has
been
regarded
as
a
promising
alternative
nitrite
supplying
for
anammox
bacteria.
most
important
aspect
of
the
PD
process
engineering
application
is
stable
and
continuous
supply
nitrite.
However,
activity
reductase
often
higher
than
that
(NIR),
making
it
difficult
accumulate
during
process.
Herein,
strategy
achieving
efficient
using
biosafe
additive
dimethyl
sulfoxide
(DMSO)
was
constructed,
mechanism
DMSO
inhibiting
NIR
analyzed.
addition
reduced
expression
gene,
1%
can
significantly
inhibit
enzyme
achieve
When
concentration
increased
3.5%,
almost
inhibited
with
only
0.95
mg
nitrite/min.
no
inhibitory
effect
on
(NAR)
enzyme.
affinity
constant
NAR
−2.4
kcal/mol,
while
high
−3.1
kcal/mol.
shows
NIR.
Moreover,
occupy
same
catalytic
cavity
in
enzyme,
which
fundamental
reason
why
selectively
inhibits
This
study
provides
new
idea
realizing
function.
Critical Reviews in Environmental Science and Technology,
Год журнала:
2024,
Номер
54(23), С. 1672 - 1691
Опубликована: Май 16, 2024
Biological
nitrogen
removal
is
a
classic
technique
for
removing
from
wastewater
that
has
been
studied
extensively
and
gives
high
rate,
energy
efficiency,
relatively
environmentally
benign.
Using
biological
processes
to
treat
the
diverse
components
of
requires
thorough
understanding
microorganisms
pathways
involved.
However,
information
regarding
participating
in
remains
limited.
This
review
presents
current
knowledge
researches
into
these
microorganisms,
including
ammonia
oxidizing
bacteria,
archaea,
complete
oxidation
nitrite-oxidizing
anaerobic
ammonium
denitrifying
heterotrophic
nitrification-aerobic
denitrification
bacteria.
The
metabolic
enzymatic
reactions
involved
cycle
abovementioned
are
demonstrated.
key
enzymes,
functional
genes,
removal-related
were
discussed.
Additionally,
advantages
different
oxidation,
denitrifying,
HN-AD
described.
Finally,
limitations
strategies
unraveling
presented.
aim
improve
our
principle
advanced
allow
possible
improvements
treatment
be
identified.
