Environmental Technology,
Год журнала:
2024,
Номер
46(6), С. 848 - 862
Опубликована: Июнь 26, 2024
This
study
investigated
the
effects
of
different
aeration
intensities
on
organic
matter
(OM)
degradation,
greenhouse
gas
emissions
(GHG)
as
well
humification
during
plant
residue
composting.
Three
intermittent
0.084
(Tlow),
0.19
(Tmedium)
and
0.34
(Thigh)
L
min-1kg-1
DM
with
30
min
on/30
off
were
conducted
a
lab-scale
composting
experiment.
Results
showed
that
OM
mineralization
in
Thigh
was
more
evident
than
Tlow
Tmedium,
resulting
highest
humic
acid
content.
Humic
content
Tmedium
15.7%
18.5%
higher
Tlow.
The
average
O2
concentration
4.9%,
9.5%
13.6%
for
Tlow,
Thigh.
Compared
Thigh,
reduced
CO2
N2O
by
18.3%-39.6%
72.4%-63.9%,
but
CH4
emission
But
total
GHG
lowest
Linear
Discriminant
Analysis
Effect
Size
analysis
core
bacteria
within
mainly
belonged
to
Anaerolineaceae,
which
significantly
negatively
correlated
CH4.
Thermostaphylospora,
Unclassified_Vicinamibacteraceae
Sulfurifustis
identified
these
genus
postively
emissions.
Redundancy
orgnic
carbon,
electrical
conductivity
key
factors
affecting
evolution
bacterial
community.
Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 7, 2023
Abstract
The
study
investigated
the
effects
of
different
aeration
intensities
on
organic
matter
(OM)
degradation,
greenhouse
gas
emissions
(GHG)
as
well
humification
during
plant
residue
composting.
Three
intermittent
0.16
(T1),
0.38
(T2)
and
0.68
(T3)
L/kg
DM/min
with
30
min
on/30
off
were
conducted
a
lab-scale
composting
experiment.
Results
showed
that
OM
mineralization
in
T3
was
more
evident
than
T1
T2,
resulting
highest
degree
humic
acids
(HA)
content.
HA
content
T2
7.68%
10.28%
higher
T1.
Medium
intensity
favorable
for
emission
total
GHG
emission.
Linear
Discriminant
Analysis
Effect
Size
analysis
biomarkers
within
mainly
belonged
to
Anaerolineaceae
,
while
Thermostaphylospora
identified
T2.
enrichment
thermophilic
bacterial
genera
may
play
important
roles
promoting
T3.
Bacterial
network
had
most
key
nodes
edges.
interaction
between
community
strengthened
relationship
closest
Structural
Equation
Model
confirmed
dominant
humification.
Oxygen
concentration
pH
indirectly
affected
both
through
action
microorganisms.
Environmental Technology,
Год журнала:
2024,
Номер
46(6), С. 848 - 862
Опубликована: Июнь 26, 2024
This
study
investigated
the
effects
of
different
aeration
intensities
on
organic
matter
(OM)
degradation,
greenhouse
gas
emissions
(GHG)
as
well
humification
during
plant
residue
composting.
Three
intermittent
0.084
(Tlow),
0.19
(Tmedium)
and
0.34
(Thigh)
L
min-1kg-1
DM
with
30
min
on/30
off
were
conducted
a
lab-scale
composting
experiment.
Results
showed
that
OM
mineralization
in
Thigh
was
more
evident
than
Tlow
Tmedium,
resulting
highest
humic
acid
content.
Humic
content
Tmedium
15.7%
18.5%
higher
Tlow.
The
average
O2
concentration
4.9%,
9.5%
13.6%
for
Tlow,
Thigh.
Compared
Thigh,
reduced
CO2
N2O
by
18.3%-39.6%
72.4%-63.9%,
but
CH4
emission
But
total
GHG
lowest
Linear
Discriminant
Analysis
Effect
Size
analysis
core
bacteria
within
mainly
belonged
to
Anaerolineaceae,
which
significantly
negatively
correlated
CH4.
Thermostaphylospora,
Unclassified_Vicinamibacteraceae
Sulfurifustis
identified
these
genus
postively
emissions.
Redundancy
orgnic
carbon,
electrical
conductivity
key
factors
affecting
evolution
bacterial
community.
