Cleaner Environmental Systems,
Год журнала:
2023,
Номер
12, С. 100157 - 100157
Опубликована: Дек. 6, 2023
Pig
slurry
is
an
agricultural
residue
with
potential
for
utilisation
as
organic
fertiliser
and
biomethane
feedstock.
That
value
typically
diminished
via
greenhouse
ammonia
gaseous
losses
during
temporary
storage,
issue
further
exacerbated
by
the
global
warming,
pollutant
malodorous
nature
of
those
compounds.
Existing
methods
reducing
emissions
from
pig
may
require
significant
capital
outlay
and/or
prove
difficult
to
retrofit.
A
promising
reactive
oxygen-based
additive
(GasAbate®)
was
thus
scaled-up
1
m3
tanks
filled
750
L
weaner
slurry.
Several
experiments
were
carried
out
in
three
distinct
phases,
namely
i.
ambient
temperature
scale-up;
ii.
heated
trials
determine
optimal
application
method;
iii.
compare
results
static
dynamic
chamber
scenarios,
each
iteration
aiming
garner
understanding
treatment
efficacy
under
various
conditions.
The
demonstrate
scalability
this
additive,
its
total
volume
(63–90%
reduction),
(22–58%
reduction)
compound
evolution
(22–83%
reduction
a
range
compounds)
storage
resulting
retention
energy
nutrient
slurry,
34–57%
higher
potential.
use
could
be
well
suited
farms
that
short-term
(ca.
30
days)
before
feeding
biogas
system.
Agriculture,
Год журнала:
2024,
Номер
14(10), С. 1788 - 1788
Опубликована: Окт. 11, 2024
Spain
has
been
the
largest
pork
producer
in
EU
recent
years,
leading
to
significant
pig
slurry
(PS)
production
that
requires
proper
management
prevent
environmental
impacts.
The
objectives
of
this
study
were
quantify
greenhouse
gas
(GHG)
and
ammonia
emissions
characterize
PS
storage
pond
systems.
A
straw
cover
(SP)
addition
effective
microorganisms
(EMs)
a
biological
(BP)
used
treat
slurries.
During
two
periods
(autumn
spring),
was
characterized
GHG
(CO2,
CH4,
N2O)
NH3
measured
with
dynamic
chamber.
After
5
weeks
storage,
BP
achieved
reduction
96%
for
CO2,
98%
CH4
59%
compared
control
(CP)
spring,
while
SP
presented
74%
CO2
autumn,
60%
97%
reductions
NH3,
respectively,
spring.
Additionally,
samples
showed
decreasing
trend
EC,
dry
matter,
COD,
BOD5,
total
N,
NH4+-N,
Org.-N,
NO3−-N,
PO43−
during
both
seasons.
This
preliminary
shows
promise
reducing
GHG/NH3
improving
properties,
but
further
replication
is
recommended.
Varying
thickness,
optimizing
EM
dose,
pH
may
enhance
outcomes.
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
commences
an
exhaustive
overview
contemporary
reduction
methodologies
pertinent
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
serves
only
address
immediate
impacts
associated
farming
but
also
contributes
significantly
overarching
goal
sustainable
development
agricultural
sector.
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.
Cleaner Environmental Systems,
Год журнала:
2023,
Номер
12, С. 100157 - 100157
Опубликована: Дек. 6, 2023
Pig
slurry
is
an
agricultural
residue
with
potential
for
utilisation
as
organic
fertiliser
and
biomethane
feedstock.
That
value
typically
diminished
via
greenhouse
ammonia
gaseous
losses
during
temporary
storage,
issue
further
exacerbated
by
the
global
warming,
pollutant
malodorous
nature
of
those
compounds.
Existing
methods
reducing
emissions
from
pig
may
require
significant
capital
outlay
and/or
prove
difficult
to
retrofit.
A
promising
reactive
oxygen-based
additive
(GasAbate®)
was
thus
scaled-up
1
m3
tanks
filled
750
L
weaner
slurry.
Several
experiments
were
carried
out
in
three
distinct
phases,
namely
i.
ambient
temperature
scale-up;
ii.
heated
trials
determine
optimal
application
method;
iii.
compare
results
static
dynamic
chamber
scenarios,
each
iteration
aiming
garner
understanding
treatment
efficacy
under
various
conditions.
The
demonstrate
scalability
this
additive,
its
total
volume
(63–90%
reduction),
(22–58%
reduction)
compound
evolution
(22–83%
reduction
a
range
compounds)
storage
resulting
retention
energy
nutrient
slurry,
34–57%
higher
potential.
use
could
be
well
suited
farms
that
short-term
(ca.
30
days)
before
feeding
biogas
system.
