To
accelerate
the
aerobic
compost
maturation
process
and
reduce
loss
of
carbon
from
compost,
we
conducted
composting
experiments
with
cattle
manure
straw
as
raw
materials
to
assess
five
treatments:
control
(CK),
magnetized
water
treatment
(M),
plus
biochar
(SM),
ferrous
sulfate
(FM),
Bacillus
megaterium
(GM).
Compared
initial
content,
total
organic
(TOC)
content
increased
significantly
by
4.1%
under
FM,
but
decreased
20.4%,
15.4%,
15.7%,
21.3%
CK,
M,
SM,
GM,
respectively.
During
thermophilic
phase,
where
accA
was
highest
whereas
rbcL
korA
were
those
frdA,
acsA,
acsE,
pccA
these
genes
all
have
key
functions
fixation
in
compost..
Proteobacteria,
Bacteroidota
Planctomycetota
accounted
for
largest
proportion
FM
(72.9%)
during
phase.
At
same
time,
SPSS
correlation
showed
that
phyla
microorganisms
had
significant
positive
rbcL,
korA,
acsA
pccA.
Therefore,
effectively
enhanced
storage
improved
quality.
Agriculture,
Journal Year:
2025,
Volume and Issue:
15(4), P. 425 - 425
Published: Feb. 18, 2025
Acidic
additives
have
garnered
significant
attention
due
to
their
ability
reduce
ammonia
(NH3)
emissions,
enhance
nitrogen
retention,
and
balance
function
with
cost-effectiveness.
This
study
aimed
investigate
the
potential
of
oxalic
acid
(OA)
in
reducing
gas
promoting
compost
humification,
enhancing
nutrient
retention
during
co-composting
chicken
manure.
Moreover,
comparative
analysis
effects
economic
benefits
was
conducted
among
OA
groups
varying
concentrations
(OA1:
0.03
mol·kg−1,
OA2:
0.10
OA3:
0.15
mol·kg−1)
a
sulfuric
(SA)
group
(SA1:
mol·kg−1).
The
results
indicated
that
addition
can
extend
thermophilic
phase
some
extent
achieve
required
composting
maturity.
As
amount
increased,
NH3
emissions
(p
<
0.05)
total
loss
rate
decreased;
however,
this
also
increased
cost.
No
difference
observed
between
SA1
OA1
0.05).
It
is
worth
noting
SA
SO42−
content,
leading
an
increase
113.52%
H2S
emissions.
In
contrast,
resulted
reduction
by
29.92–45.90%.
terms
analysis,
most
effective
(OA1
>
OA2
OA3
SA1).
Thereby,
proved
be
good
alternative
for
manure,
mol·kg−1
recommended.
