Water,
Journal Year:
2023,
Volume and Issue:
15(24), P. 4292 - 4292
Published: Dec. 16, 2023
As
the
problem
of
eutrophication
water
bodies
and
nitrate
pollution
surface
groundwater
is
becoming
more
prominent,
deep
denitrification
wastewater
can
effectively
reduce
amount
nitrogen
(NO3−-N)
discharged
into
natural
bodies.
To
solve
this
problem,
in
research,
autotrophic
denitrifying
bacteria
were
incorporated
an
simulator
equipped
with
magnetic
pyrite
to
remove
NO3−-N
total
(TN)
from
wastewater.
The
purified
strains
inoculated
municipal
sewage.
When
ratio
quartz
sand
was
1:1
particle
size
filler
0.5–1
mm,
removal
rate
TN
optimized,
at
93.52%
83.22%,
respectively.
Sulphate
(SO42−)
concentrations
will
level
off
during
stable
system
operation,
SO42−
show
a
positive
correlation
removal.
16s
rDNA
sequencing
analysis
screened
sludge
showed
that
main
phyla
Epsilonbacteraeota
Proteobacteria,
abundance
65.83%
26.88%,
final
enriched
products
dominated
by
Sulfurimonas
Thiobacillus,
64.91%
9.32%,
results
could
be
using
thiosulfate
as
substrate,
use
magneto
electron
donor
reduced
most
N2,
while
reducing
content.
Fuel,
Journal Year:
2024,
Volume and Issue:
365, P. 131265 - 131265
Published: Feb. 26, 2024
Integrating
bioenergy
into
carbon
capture
and
storage
systems
(Bio-CCS)
is
a
novel
concept
aiming
at
reducing
CO2
emissions,
pointing
to
short-term
need
increase
the
use
of
non-conventional
biomasses.
The
main
objective
this
experimental
research
characterize
behavior
two
agro-waste
biomasses
under
oxy-co-firing
conditions,
as
concerns
fuel
conversion
NO
formation,
compared
typical
raw
pine
wood.
effect
replacing
with
H2O
in
firing
atmosphere
also
sought.
Two
different
biomass
shares
blends,
20
%
50
%,
are
selected.
experiments
conducted
lab-scale
entrained
flow
reactor
for
O2
concentrations
(21
35
%)
four
(0
10
25
40
%).
Some
operating
conditions
kept
same
enable
comparisons:
mean
residence
time
(3
s),
initial
temperature
(1000
°C)
oxygen
excess
(1.25).
New
results
have
been
obtained
from
experiments,
optimizing
burnout
degrees
levels.
Minimum
differences
conversions
detected
cases
when
agro-biomasses
replace
wood:
less
than
0.7
1.1
percentage
points.
Burnout
maximized
replaced
most
cases,
maximum
values
range
97.3–97.7
%.
higher
share
blend,
N-fuel
conversion,
consistent
their
larger
nitrogen
contents.
Significant
decreases
H2O,
reductions
17.6
extent
these
shows
clear
dependence
on
volatiles-to-char
ratios
fired
blends:
ratio,
lower
decrease.
For
largest
steam
additions
(40
%),
depleting
caused
by
partially
compensated
enhancement
N-volatiles
oxidation,
limiting
1.7–7.3
dry
atmospheres.
