Communications in Soil Science and Plant Analysis,
Journal Year:
2024,
Volume and Issue:
56(2), P. 230 - 238
Published: Oct. 15, 2024
Pig
slurry
can
be
used
as
an
alternative
source
for
nutrients,
particularly
nitrogen
(N),
plants.
However,
after
applying
the
pig
to
soil,
gaseous
loss
of
N
this
nutrient
may
occur,
mainly
in
form
ammonia.
Hence
study
aimed
evaluate
by
volatilization
application
with
acidified
pH.
Ammonia
was
evaluated
using
slurry,
its
pH
modified
5.0
four
acids
(sulfuric
acid,
citric
ascorbic
and
acetic
acid).
Additionally,
natural
a
control
were
also
used.
The
work
conducted
greenhouse,
collectors
capture
volatilized
ammonia
static
free
semi-open
chamber.
(7.19)
resulted
61%
ammonia,
whereas
acidification
acid
(pH
5.0)
caused
only
26%.
above
7.0
loss,
indicating
that
maintain
5.0–6.0
could
reduce
volatilization.
Biosystems Engineering,
Journal Year:
2023,
Volume and Issue:
229, P. 209 - 245
Published: April 21, 2023
The
storage
of
liquid
manure
(slurry)
is
a
major
source
methane
(CH4)
and
thus
contributes
significantly
to
the
climate
impact
agriculture.
necessity
store
slurry
in
barns
tanks
at
different
seasons
has
led
increasing
research
mitigation
CH4
emissions
from
management
chain.
In
this
review,
holistic
view
strategies
targeting
pits
classified
based
on
mechanism
interaction
(physical,
chemical,
biological)
with
their
efficiency
presented.
Also,
combination
chemical
additives
other
methods
discussed.
key
include
cover,
solid–liquid
separation,
acidification,
antimicrobial
agents,
aeration.
Among
various
methods,
acidification
pH
5.5
acts
as
benchmark
since
it
achieves
reduction
emission
range
95–99%
65–99%
stored
pig
cattle
slurry,
respectively.
Other
treatments
such
agents
oxidants
also
reduce
wide
depending
dosage.
Further,
physical
yields
cumulative
or
synergistic
effect
reducing
emission.
This
review
identifies
significant
factors
that
influence
additives,
which
helps
mitigate
storage.
Based
efficiency,
good
choice
technology
storages.
would
fit
well
frequent
removal
barn
outside
cold
regions.
Plants,
Journal Year:
2024,
Volume and Issue:
13(16), P. 2285 - 2285
Published: Aug. 17, 2024
This
review
paper
synthesizes
the
current
understanding
of
greenhouse
gas
(GHG)
emissions
from
field
cropping
systems.
It
examines
key
factors
influencing
GHG
emissions,
including
crop
type,
management
practices,
and
soil
conditions.
The
highlights
variability
in
across
different
Conventional
tillage
systems
generally
emit
higher
levels
carbon
dioxide
(CO
ACS Agricultural Science & Technology,
Journal Year:
2022,
Volume and Issue:
2(3), P. 437 - 442
Published: May 11, 2022
Excreta
from
housed
animals
are
typically
stored
before
land
application,
and
storage
is
an
important
point
source
of
CH4,
N
gases,
odor.
This
study
explored
acidification
as
a
strategy
for
greenhouse
gas
(GHG)
mitigation,
specifically
the
potential
to
reduce
acid
dose
improve
cost-effectiveness
minimize
environmental
impacts.
Pig
slurry
was
with
five
doses
concentrated
sulfuric
[1.2–6.0
kg
(m3
slurry)−1]
63
days.
Emissions
CH4
NH3
were
reduced
by
46–96%
33–78%,
respectively,
increase
in
dose.
Odorant
emissions,
dominated
4-methyphenol
H2S,
strongly
suppressed
acidification.
Below
pH
6,
methanogen
inhibition
most
likely
due
undissociated
VFAs,
above
could
involve
competition
sulfate
reducers
H2S.
If
1,
3,
or
10
treatments
needed,
annual
costs
GHG
mitigation
across
28–47,
44–57,
93–134
€
(ton
CO2
equivalents)−1,
respectively.
With
1
3
treatments,
cost-effective
2.1
m–3,
3.2
m–3
treatments.
suggests
that
low-dose
viable
mitigation.
PLoS ONE,
Journal Year:
2022,
Volume and Issue:
17(5), P. e0267693 - e0267693
Published: May 5, 2022
Methane
(CH
4
)
emission
from
pig
slurry
is
a
large
contributor
to
the
climate
footprint
of
livestock
production.
Acidification
excreta
animals
with
sulfuric
acid,
reduce
CH
and
practiced
at
many
Danish
farms.
Possible
interaction
effects
other
acidic
agents
or
management
practices
(e.g.
frequent
removal
residual
acidification)
have
not
been
fully
investigated.
Here
we
assessed
effect
acidification
range
organic
inorganic
acids
respect
their
inhibitor
potential
in
several
batch
experiments
(BS).
After
careful
selection
promising
inhibitors,
three
continuous
headspace
(CHS)
were
carried
out
simulate
manure
houses.
In
BS
experiments,
more
than
<99%
reduction
was
observed
HNO
3
treatment
pH
5.5.
Treatments
,
H
2
SO
PO
reduced
production
acetic
acid
when
acidified
same
initial
Synergistic
mixing
as
otherwise
proposed
literature,
which
attributed
high
amount
start
with.
CHS
but
increased
nitrous
oxide
(N
O)
emission,
particularly
target
above
6,
suggesting
considerable
denitrification
activity.
Due
N
O
treatments,
total
CO
-eq
by
67%,
whereas
91.5%
compared
untreated
slurry.
daily
addition,
weekly
removal,
acidification,
treatments
27%
48%,
respectively
(not
significant).
More
cycles
are
recommended
future
research.
The
study
provides
solid
evidence
that
suitable
for
reducing
should
be
preferred
agent
acidification.
Sustainability,
Journal Year:
2023,
Volume and Issue:
16(1), P. 265 - 265
Published: Dec. 27, 2023
In
recent
years,
the
Canadian
dairy
sector
has
faced
escalating
challenges
due
to
its
significant
contribution
greenhouse
gas
emissions,
particularly
methane.
This
paper
critically
examines
a
spectrum
of
innovative
techniques
aimed
at
mitigating
methane
emissions
within
this
sector,
scrutinizing
their
cost-effectiveness,
efficiency,
compatibility
with
animal
welfare
standards,
and
adherence
both
existing
prospective
environmental
legislations.
The
discourse
begins
an
exhaustive
overview
contemporary
reduction
methodologies
relevant
farming,
followed
by
rigorous
analysis
economic
feasibility.
includes
detailed
cost-benefit
analysis,
juxtaposed
efficiency
technological
advancements
these
embody.
A
pivotal
aspect
examination
is
alignment
emission
objectives,
ensuring
that
strategies
employed
do
not
compromise
health
well-being
cattle.
Furthermore,
delves
into
legislative
landscape
Canada,
evaluating
congruence
current
laws
anticipating
future
regulatory
shifts.
Performance
indicators
for
are
assessed,
establishing
benchmarks
tailored
context.
complemented
exploration
market
potential
innovations,
including
factors
influencing
adoption
scalability
in
market.
culminates
synthesis
case
studies
best
practices
offering
insights
successful
implementations
drawing
lessons
endeavors.
comprehensive
approach
only
addresses
immediate
impacts
associated
farming
but
also
significantly
contributes
overarching
goal
sustainable
development
agricultural
sector.
research
presented
holds
implications
model
addressing
while
maintaining
viability
welfare.
Environmental Technology & Innovation,
Journal Year:
2024,
Volume and Issue:
34, P. 103539 - 103539
Published: Jan. 24, 2024
Animal
manure
is
widely
used
in
farmland,
and
the
acidification
of
animal
slurry
has
been
proven
to
be
an
effective
method
reduce
nitrogen
(N)
loss
during
storage.
Although
there
evidence
that
H2SO4
a
good
acidifier
slurry,
it
strictly
controlled
by
Chinese
government.
Hence,
alternative
required.
The
one-time
pig
with
hydrochloric
acid
(HCl),
sulfuric
(H2SO4),
nitric
(HNO3),
phosphoric
(H3PO4),
formic
(CH2O2),
acetic
(C2H4O2)
pH
5.0
storage
period
180
days
investigated
this
study.
results
demonstrated
large
amount
(79.8%)
was
lost
value
related
untreated
slurry.
Acidification
all
mentioned
acidifiers
reduced
N
loss.
lowest
obtained
using
H3PO4
(11.9%),
second
(31.7%),
third
HCl
(40.6%),
HNO3
had
worst
(76.0%).
After
acidification,
microbial
community
number
declined
more
than
10%,
half
changed.
relative
abundance
Pseudomonadaceae
acidified
15.9%,
which
much
higher
(0.9%),
leading
rapid
conversion
rate
Therefore,
technically
feasible
use
as
for
reduction
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.