Environmental Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 12
Published: Dec. 31, 2024
Horizontal
subsurface
flow
constructed
wetlands
(HFCWs)
are
capable
of
eliminating
organic
matter
and
nitrogen
while
emitting
less
methane
(CH4)
nitrous
oxide
(N2O)
than
free
water
surface
wetlands.
However,
the
simultaneous
removal
pollutants
reduction
greenhouse
gases
(GHG)
emissions
from
high-strength
wastewater
containing
high
levels
ammonium
(NH4+-N)
has
not
get
been
investigated.
The
influent
COD
concentration
affected
efficiency
removal,
GHG
presence
iron
ore,
but
TP
efficiencies
remained
unaffected.
CO2
CH4
fluxes
were
significantly
influenced
by
concentrations,
whereas
N2O
obtained
during
7d.
highest
fluxes,
along
with
emissions,
observed
in
HFCWs
concentrations
375.6
mg/L
NH4+-N
159.0
at
a
COD/N
ratio
2.4.
Conversely,
lowest
(–1.72
mg/m2/h)
(0.13
recorded
162.4
4.5,
although
was
weak
these
HFCWs.
3.6
exhibited
greater
other
pollutants,
lower
global
warming
potential
(GWP).
In
conclusion,
both
pollutant
emissions.
enhancement
can
be
achieved
3.6.
Journal of Environmental Management,
Journal Year:
2024,
Volume and Issue:
359, P. 121109 - 121109
Published: May 1, 2024
The
impact
of
climate
change
on
water
availability
and
quality
has
affected
agricultural
irrigation.
use
treated
wastewater
can
alleviate
in
agriculture.
Nevertheless,
it
is
imperative
to
ensure
proper
treatment
before
reuse,
compliance
with
current
regulations
this
practice.
In
decentralized
scenarios,
the
lack
adequate
facilities
poses
a
challenge
providing
for
Hence,
there
critical
need
develop
implement
innovative,
feasible,
sustainable
solutions
secure
alternative
source.
This
study
proposes
integration
intensive
natural
systems,
specifically,
combination
up-flow
anaerobic
sludge
blanket
reactor
(UASB),
membrane
bioreactor
(AnMBR),
constructed
wetlands
(CWs),
ultraviolet
(UV)
disinfection.
For
purpose,
novel
demo-scale
plant
was
designed,
implemented
test
evaluate
capability
proposed
system
provide
an
effluent
European
reuse
regulatory
framework.
addition,
carbon-sequestration
energy
analyses
were
conducted
assess
sustainability
approach.
research
confirmed
that
UASB
rector
be
employed
biogas
production
(2.5
L
h−1)
recovery
from
organic
matter
degradation,
but
its
requires
further
steps
reused
AnMBR
complied
class
A
standards
E.
coli,
boasting
concentration
0
CFU
100
mL−1,
nearly
negligible
TSS
levels.
However,
reduction
BOD5
(35
mg
L−1)
required
reach
A.
CWs
efficiently
produced
below
10
L−1
close
L−1,
making
suitable
meeting
standards.
Furthermore,
demonstrated
significantly
higher
efficiency
compared
systems.
Nonetheless,
inclusion
UV
disinfection
unit
after
attain
B
Water,
Journal Year:
2024,
Volume and Issue:
16(2), P. 308 - 308
Published: Jan. 17, 2024
This
study
designed
surface
flow
constructed
wetlands
(SFCWs)
with
Myriophyllum
aquaticum
(M.
aquaticum)
to
evaluate
how
different
influent
C/N
ratios
(0:1
(C0N),
5:1
(C5N),
10:1
(C10N),
and
15:1
(C15N))
affect
pollutant
removal,
greenhouse
gas
(GHG)
emissions,
microbial
communities.
The
results
showed
that
effluent
ammonia
nitrogen
(NH4+-N),
nitrate
(NO3−-N),
total
(TN)
concentrations
decreased,
but
chemical
oxygen
demand
(COD)
concentration
increased
increasing
ratios.
highest
removal
rates
of
TN
(73.17%)
COD
(74.56%)
were
observed
C5N.
Regarding
GHG
a
few
changes
in
CO2
fluxes
caused
by
the
ratio,
whereas
CH4
obviously
ratio.
N2O
emission
occurred
C0N
(211.03
±
44.38
mg-N·m−2·h−1),
decreasing
significantly
higher
High-throughput
sequencing
revealed
directly
influenced
distribution
composition
related
metabolism
SFCWs.
abundance
(46.24%)
denitrifying
bacteria
(DNB)
was
C5N,
which
helped
achieve
efficient
simultaneous
reduction
emissions.
Methanogen
rose
ratios,
methanotrophs
peaked
under
C5N
C10N
conditions.
Additionally,
random
forest
model
identified
ratio
Rhodopseudomonas
as
primary
factors
influencing
respectively.
highlights
importance
regulating
both
emissions
wetlands.
Geocarto International,
Journal Year:
2024,
Volume and Issue:
39(1)
Published: Jan. 1, 2024
Methane
(CH4)
is
the
second
most
abundant
anthropogenic
greenhouse
gas
after
carbon
dioxide
(CO2),
accounting
for
about
20%
of
global
emissions.
CH4
emission
sources
include
landfills,
oil
and
natural
systems,
agricultural
activities,
coal
mining,
stationary
mobile
combustion,
wastewater
treatment
certain
industrial
processes.
In
this
work,
we
examine
spatio-temporal
dynamics
its
relationship
to
climatic
vegetation
parameters
in
Northern
Cape
province
South
Africa.
Various
datasets
from
TROPOspheric
Monitoring
Instrument,
Moderate
Resolution
Imaging
Spectroradiometer,
Atmospheric
Infrared
Sounder
Global
Precipitation
Climatology
Project
were
used.
The
results
show
an
increasing
trend
concentration
throughout
entire
province.
greatest
increase
observed
western
parts
during
June–July–August
(JJA)
season.
shows
negligible
correlation
with
parameters,
i.e.
Temperature
(Temp),
(Precip)
NDVI
both
seasons.
Temp–NDVI
high
values
r
=
–0.71
0.82
DJF
JJA
seasons,
respectively.
Seasonality
plays
a
critical
role
relationships
parameters.
This
study
that
are
crisis,
robust
mitigation
strategies
needed
combat
this.
Journal of Animal Environmental Science,
Journal Year:
2024,
Volume and Issue:
26(1), P. 46 - 55
Published: April 30, 2024
The
livestock
industry
plays
a
vital
role
in
the
economy
by
producing
food
for
humans.
However,
unsuitable
management
can
have
detrimental
effects
on
environment.
methane
(CH4)
and
nitrous
oxide
(N2O)
produced
from
waste
led
to
greenhouse
effect.
Thus,
recycling
is
necessary
produce
crops
sustainable
agriculture.
This
study
aims
assess
of
organic
liquid
fertilizers
derived
broccoli
growth,
antioxidants,
anti-inflammatory
properties.
fertilizer
treatment
groups
were
chemical
(CF),
chlorella
cultured
filtered
bio
(LBF),
compost
tea
mixed
with
(CT+LF).
plant
height,
leaf
length,
width,
SPAD
values
did
not
exhibit
any
significant
differences
until
50
days
when
supplied
biofertilizer
or
+
length
units
day
71
higher
CF
group
than
LBF
CT+LF
groups.
Furthermore,
several
antioxidant
activities
increased
DPPH
nitrite
scavenging,
indicating
that
enhance
levels.
