Nitrate removal in woodchip-based bioreactors and greenhouse gas formation tradeoffs between under- and over-treatment
J Lin,
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Nils Volkenborn
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Frontiers in Environmental Science,
Journal Year:
2025,
Volume and Issue:
13
Published: March 19, 2025
Woodchip-based
media
are
increasingly
used
to
remove
excess
nitrate
from
groundwater
but
data
on
nitrogen
removal
rates
and
greenhouse
gas
formation
for
different
woodchip
types,
loading
temperatures
is
limited.
Here,
we
present
a
1-year
long
column
experiment
in
which
the
performance
of
4
aged
was
assessed
range
at
temperatures.
Nitrate
(CH
,
N
2
O)
were
measured
under
nitrate-replete
(excess
effluent),
nitrate-limited
(complete
removal)
nitrate-deplete
conditions
(no
influent).
At
14°C,
highest
oak
(4.3
g
m
−3
day
−1
)
followed
by
maple/cherry
(3.2
),
oak/pine
(2.2
pine
(0.4
).
20°C,
increased
factor
2.6
times
oak,
6
pine.
CH
O
typically
did
not
co-occur
effluent.
Maximal
effluent
concentrations
observed
with
temperature.
In
contrast,
O,
denitrification
intermediate,
only
significantly
elevated
partially
denitrified
conditions.
The
provided
here
can
help
make
more
informed
decisions
optimal
design
woodchip-based
removing
bioreactors
maximize
minimize
gases
associated
unavoidable
under-
over-treatment
nitrate.
Language: Английский
Pesticides and Their Effects on Gut Microbiota: A Comprehensive Review of Environmental and Health Consequences
Aat Aduljaleel,
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Nooralhuda Aljawhar,
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Sara Jassim
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et al.
Medical Science Journal for Advance Research,
Journal Year:
2024,
Volume and Issue:
5(4)
Published: Dec. 30, 2024
An
increasing
use
of
pesticides
in
agriculture
is
considered
as
the
dangerous
hazard
to
environment,
human
health,
and
sustainability.
The
effects
on
organisms
include
decline
amount
phytoplankton
zooplankton,
development
resistance
pests
negative
impacts
pollinators.
These
chemical
residues
too
interfere
with
biogeochemical
cycles,
reduce
microbial
count
soil,
are
anti-neo
plastic
carcinogenic
nature
different
species.
Concerning
health
effects,
exposure
these
chemicals
cause
cancer,
deterioration
neurodevelopment,
reproductive
disorders
well
immune
disorders.
Besides,
action
aimed
at
destroying
both
beneficial
bacteria
gut
microbiota,
thus
causing
obesity
diabetes.
measures
required
for
problems
regulation
farmer
awareness
schooling
stop
contamination
from
piling
up
water
bodies.
Some
strategies
degradation,
pesticide
degradation
improvement
population
microorganisms
soil.
Organic
farming
sound
policies
important
maintain
improve
earth’s
condition,
uphold
companies’
standards
set
by
legal
frameworks,
sustain
quality
life.
Therefore,
microbiota
interactions
hosts
microbes
need
be
analyzed
devise
appropriate
solutions.
efforts
very
useful
dealing
possible
threats
ensuring
environmentally
friendly
farming.
Language: Английский