Abstract
Ammonia
emissions
from
livestock
farms
are
a
major
problem
for
staff
and
residents
near
these
centers.
Anaerobic
decomposition
of
waste
the
collection
stacking
main
sources
ammonia
gas
on
farms.
This
article
examined
facilities
Tehran
Imam
Khomeini
International
Airport.
First,
field
measurements
were
made
in
summer
(30°C),
collected
samples
using
indophenol
technique.
AERMOD,
based
Gaussian
fluctuating
plume
theory,
was
constructed
to
model
emissions.
According
maximum
periodic‐seasonal
2‐hourly
8‐hourly
concentrations
15.9,
229,
63.7
OU
(odor
unit
per
volume)/m
3
,
respectively.
The
hourly
emission
rate
is
also
0.0168
gm
−2
h
−1
.
AERMOD
results
mathematical
indicated
reasonable
agreement
with
measurement,
which
coefficient
determination
(
R
2
),
index
(d),
efficiency
(E)
0.95,
0.97,
0.91,
Moreover,
Statistical
indices,
including
geometric
mean
bias
(MG),
variance
(VG),
fraction
predictions
within
factor
two
observations
(FAC2),
normalized
square
error
(NMSE),
root
(RMSE)
absolute
(MAE)
by
1.36
0.67,
respectively,
used
assess
reliability
showed
that
had
good
measurement.
IEEE Sensors Journal,
Journal Year:
2024,
Volume and Issue:
24(7), P. 9366 - 9374
Published: Feb. 28, 2024
The
electrochemical
synthesis
of
polypyrrole
(PPy)
on
laser-induced
graphene
(LIG)
electrodes
is
investigated
in
this
study,
along
with
the
gas
sensing
applications
these
modified
laser-tailored
materials.
A
simple
and
scalable
method
for
low-cost,
large-scale
production
LIG
nanocomposites
(PPy@LIG
NCs)
proposed.
This
nanocomposite
subsequently
applied
to
design
chemo-resistive
flexible
sensors
detect
ammonia
(NH3)
levels
at
room
temperature.
Following
a
brief
exposure,
PPy@LIG
NCs
demonstrate
changes
resistance
sensitivity
14
times
higher
than
that
pure
LIG.
Moreover,
excellent
repeatability
results
low
detection
limit
1
ppm
were
achieved.
formation
PPy
confirmed
through
Raman
spectroscopy
FTIR
spectroscopy.
analysis
by
FE-SEM
TEM
verified
NCs.
In
conclusion,
work
introduces
novel
its
application
sensing,
showcasing
their
unique
selectivity,
enhanced
sensitivity,
cost-effective
production.
These
attributes
mark
significant
step
forward,
presenting
new
possibilities
development
advanced
gas-sensing
systems
aimed
improving
air
quality
monitoring.
Waste Management,
Journal Year:
2025,
Volume and Issue:
203, P. 114856 - 114856
Published: May 5, 2025
Ammonia
and
greenhouse
gas
emissions
are
an
environmental
issue
associated
with
animal
manure
management.
Concrete,
practical,
economic
solutions
needed
for
farmers
other
stakeholders
around
the
globe
to
solve
this
issue.
Decreasing
slurry
pH
help
of
acids
or
compounds
is
a
well-documented
technique
reduce
ammonia
methane
from
slurry.
However,
effect
acidification
on
N2O
still
not
clear.
Recently,
acidifying
agents
than
previously
used
mineral
have
been
tested
such
as
e.g.
organic
acids,
bio-waste
materials,
microbial
inoculations.
effectiveness
these
in
reducing
mitigation
gaseous
further
needs
be
reviewed.
Also,
combination
treatments
composting,
solid-liquid
separation,
anaerobic
digestion
requires
consideration
whole-system
solutions.
Here,
recent
studies
compiled
reviewed
determine
applicability
options
management
deepen
our
understanding
impact
acidification.
The
literature
review
revealed
that
temperature
fluctuations
substantial
acidified
slurry's
performance
during
storage.
A
viable
substitute
conventional
could
biomaterials
like
sugars
whey,
microbes.
Furthermore,
apple
pulp,
sugar
beet
molasses,
grass
silage
examples
products
exhibit
promise
agents.
gain
better
viability
usefulness
recently
evaluated
compounds,
more
research
required.
Animals,
Journal Year:
2023,
Volume and Issue:
14(1), P. 82 - 82
Published: Dec. 25, 2023
The
objective
was
to
evaluate
the
effects
of
benzoic
acid,
bromelain,
adipic
and
humic
substance
supplementation
on
nitrogen
balance,
urinary
pH,
slurry
manure
odorous
compounds
in
pigs.
Fifteen
castrated
male
pigs
with
an
initial
body
weight
37.9
kg
(standard
deviation
=
4.1)
were
individually
housed
metabolism
crates.
animals
allocated
a
triplicated
5
×
2
incomplete
Latin
square
design
15
animals,
experimental
diets,
periods.
basal
diet
mainly
consisted
corn,
soybean
meal,
rapeseed
meal.
Four
diets
prepared
by
supplementing
each
additive
at
concentration
10
g/kg
expense
corn
starch
diet.
Each
period
4-day
adaptation
period,
24
h
collection
for
sampling,
feces
urine.
urine
collected
day
mixed
ratio
fecal
obtain
samples.
apparent
total
tract
digestibility
N
fed
least
(
Journal of Applied Microbiology,
Journal Year:
2023,
Volume and Issue:
134(7)
Published: July 1, 2023
Ammonia
released
during
the
storage
period
from
pig
manure
causes
severe
air
pollution
and
odor
issues,
ultimately
leading
to
nitrogen
loss
in
manure.
In
this
study,
we
investigated
application
of
13
Bacillus
spp.
strains
isolated
paddy
soil
their
potential
minimize
reactive
at
28°C
initial
moisture
content
76.45%.We
selected
five
named
H3-1,
H4-10,
H5-5,
H5-9,
Y3-28,
capable
reducing
ammonia
emissions
by
23.58%,
24.65%,
25.58%,
25.36%,
26.82%
over
60
days
compared
control.
We
further
tested
ability
on
various
pH,
salinity,
ammonium-nitrogen
concentrations
for
future
field
applications.
Our
investigation
revealed
that
certain
bacteria
could
survive
grow
pH
6,
8,
10;
4,
10%
salinity
up
8
g
l-1
concentration.The
results
our
study
show
saline
tolerant
can
potentially
reduce
manure,
even
high
period.
IEEE Sensors,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 29, 2023
This
study
explores
the
electrochemical
modification
of
laser-induced
graphene
(LIG)
by
incorporating
synthesized
polypyrrole
(PPy)
nanocomposites
(NCs).
We
propose
a
straightforward,
and
scalable
approach
for
mass
production
nanocomposites,
resulting
in
PPy@LIG,
which
we
employ
chemoresistive
gas
sensors
capable
detecting
ammonia
(NH3)
levels
at
room
temperature.
Gas
exposure
5
minutes
demonstrates
that
PPy@LIG
NCs
exhibit
sensitivity
14
times
higher
than
pure
LIG
up
to
20
terms
intensity
resistance
changes
100
ppm
NH3.
Moreover,
achieve
excellent
repeatability
our
results.
The
synthesis,
confirmed
through
chronopotentiometry,
verifies
formation
PPy
nanocomposites.
In
summary,
this
work
presents
first-time
utilization
sensing,
revealing
promising
characteristics
developing
unattended
gas-sensing
networks
monitoring
air
quality.
