Journal of Cleaner Production,
Год журнала:
2023,
Номер
430, С. 139665 - 139665
Опубликована: Ноя. 10, 2023
Reducing
methane
(CH4)
emission
from
livestock
production
can
be
achieved
by
the
treatment
of
manure
in
slurry
pits
and
storage
tanks.
In
case
pits,
treating
residual
left
out
after
frequent
flushing
largely
reduce
CH4
due
to
decrease
methanogenic
inoculum.
this
study,
three
surfactants,
two
oxidants
a
flocculant
were
screened
for
their
efficiency
reducing
pig
headspace
setup.
All
surfactants
reduced
>
95%
at
dosage
8
g
kg−1
particularly
sodium
dodecyl
sulfate
(SDS)
was
effective
low
only
2.5
with
>95%
reduction.
Oxidants
30–85%
different
dosages,
hypochlorite
being
most
effective.
Flocculant
did
not
emissions
significantly.
None
studied
treatments
ammonia
Similarities
pathway
observed
among
surfactant
treated
slurries,
oxidant
slurries.
Considering
cost
environmental
effects
additives,
SDS
seems
promising
choice.
Future
work
on
could
either
as
combination
other
additives
or
up-scaling
designing
solutions
houses.
Biosystems Engineering,
Год журнала:
2023,
Номер
229, С. 209 - 245
Опубликована: Апрель 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.
Journal of Environmental Quality,
Год журнала:
2021,
Номер
50(4), С. 817 - 835
Опубликована: Май 22, 2021
National
inventories
of
methane
(CH4
)
emission
from
manure
management
are
based
on
guidelines
the
Intergovernmental
Panel
Climate
Change
using
country-specific
factors.
These
calculations
must
be
simple
and,
consequently,
effects
practices
and
environmental
conditions
only
crudely
represented
in
calculations.
The
intention
this
review
is
to
develop
a
detailed
understanding
necessary
for
developing
accurate
models
calculating
CH4
liquid
manure,
with
particular
focus
microbiological
conversion
organic
matter
.
Themes
discussed
(a)
environment;
(b)
production
processes
modeling
perspective;
(c)
development
adaptation
methanogenic
communities;
(d)
mass
electron
conservation;
(e)
steps
limiting
production;
(f)
inhibition
methanogens;
(g)
temperature
(h)
limits
existing
estimation
approaches.
We
conclude
that
model
include
calculation
microbial
response
variations
temperature,
substrate
availability
age,
system,
because
these
variables
substantially
affect
production.
Methane
can
reduced
by
manipulating
key
through
procedures,
may
taken
into
account
including
component
model.
When
new
it
important
reasonably
algorithms
adaptation.
This
presents
concepts
ideas
how
carried
out.
A
need
better
quantification
hydrolysis
kinetics
identified,
importance
short-
long-term
highlighted.
Animal nutrition,
Год журнала:
2024,
Номер
18, С. 17 - 26
Опубликована: Май 6, 2024
The
transition
period
for
dairy
cows
usually
refers
to
the
3
weeks
pre-calving
post-calving.
During
this
period,
undergo
metabolic
and
physiological
adaptations
because
of
their
susceptibility
infectious
diseases.
Poor
feeding
management
under
these
circumstances
may
adversely
affect
health
subsequent
production
performance
cows.
Owing
long-term
adaptation
evolution,
rumen
has
become
a
unique
ecosystem
inhabited
by
complex
microbial
community
closely
associated
with
its
natural
host.
Dietary
components
are
metabolized
microbiota,
volatile
fatty
acids
protein
products
can
be
used
as
precursor
substances
synthesizing
meat
milk
components.
successful
perinatal
includes
changes
in
diet,
physiology,
microbiota.
Rumen
profiles
have
been
confirmed
heritable
repairable;
however,
adverse
composition,
host
digestion
metabolism,
well
postpartum
traits
certain
period.
Preliminary
evidence
indicates
close
relationship
between
microbiota
animal
performance.
Therefore,
microbes
during
intrinsic
links
phenotypic
need
better
understood
optimize
ruminants.
ACS Agricultural Science & Technology,
Год журнала:
2022,
Номер
2(3), С. 437 - 442
Опубликована: Май 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.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(9), С. 3990 - 4002
Опубликована: Фев. 21, 2023
Reducing
methane
from
livestock
slurry
is
one
of
the
quickest
ways
to
counteract
global
warming.
A
straightforward
strategy
reduce
retention
time
inside
pig
houses
by
frequent
transfer
outside
storages,
where
temperature
and
therefore
microbial
activity
are
lower.
We
demonstrate
three
removal
strategies
in
a
year-round
continuous
measurement
campaign.
Slurry
funnels,
trays,
weekly
flushing
reduced
emission
89,
81,
53%,
respectively.
funnels
trays
ammonia
25–30%.
An
extended
version
anaerobic
biodegradation
model
(ABM)
was
fitted
validated
using
barn
measurements.
It
then
applied
for
predicting
storage
shows
that
there
risk
negating
reductions
due
increased
storage.
Therefore,
we
recommend
combining
with
digestion
pre-storage
or
mitigation
technologies
such
as
acidification.
However,
even
without
technologies,
predicted
net
reduction
following
at
least
30%
all
strategies.
