EarthArXiv (California Digital Library),
Год журнала:
2023,
Номер
unknown
Опубликована: Окт. 17, 2023
Macroalgae
offshore
cultivation
and
sinking
is
considered
a
potentially
practical
approach
for
ocean-based
carbon
dioxide
removal.
However,
several
considerations
need
to
be
resolved
assess
the
effectiveness
sustainability
of
this
approach.
Currently,
studies
focus
on
area
required
climate-relevant
sequestration
through
macroalgae
without
considering
realistic,
global
spatial
limitations.
This
study
uses
spatially-explicit
suitability
assessment
model
optimised
open-ocean
afforestation
site
designation.
By
applying
specific
maritime,
ecological
industrial
constraints,
two
maps
are
produced:
a)
suitable
areas
sinking,
b)
only
(for
purposes).
These
data
provide
more
realistic
quantifying
ocean
surface
(including
corresponding
depths)
within
spatially
sustainable
framework.
The
resulting
estimate
respective
EEZs
world
countries.
A
total
calculated
at
10.8M
km2,
whereas
sinking-only
account
32.8M
km2
ocean.
implications
patterns
national
levels
discussed.
We
suggest
that
concept
‘grow
nearshore,
sink
offshore’
should
explored
as
an
alternative
cultivation.
International Journal of Thermofluids,
Год журнала:
2023,
Номер
18, С. 100306 - 100306
Опубликована: Фев. 14, 2023
With
the
widespread
utilization
of
solar
photovoltaics
(PV),
it
is
becoming
increasingly
important
to
understand
its
performance
using
various
configurations
harvest
energy
at
most
suitable
efficiency,
specifically
in
hot
climates.
Therefore,
this
paper
compares
mono-facial
and
bi-facial
PV
cells
under
high-temperature
desert
climate
Sharjah
(United
Arab
Emirates).
The
optimally
tilted
vertical
east-west
were
compared
evaluate
annual
production
for
these
scenarios.
In
addition,
new
parameter,
effect
rear
side
layer
absorptivity
cell,
was
investigated.
comparative
study
considered
radiation,
ambient
temperature,
wind
speed,
albedo.
results
showed
that
considering
achieves
better
predictions.
However,
did
not
exhibit
a
significant
influence
case
with
neglected
backsheet
absorptivity.
As
such,
cell
temperature
increased
by
0.4
°C
1.4
an
albedo
0.2
0.7,
actual
value
0.2.
On
other
hand,
worth
mentioning
improper
designs
result
considerable
rises
as
increases.
Under
investigated
conditions
based
on
yearlong
comparison,
performed
than
bi-facial;
from
power
gain
ratio
7.18%
20.88%
-19.4%
12.65%.
Bioresource Technology,
Год журнала:
2025,
Номер
unknown, С. 132327 - 132327
Опубликована: Март 1, 2025
Swine
wastewater
poses
significant
environmental
challenges,
and
conventional
microalgae
treatments
often
leave
high
residual
nutrients
while
consuming
substantial
freshwater.
This
study
explored
the
potential
of
saltwater
macroalgae
Agardhiella
subulata
for
nutrient
removal
carbon
assimilation
under
varying
salinity
ammonium
concentrations.
Using
diluted
swine
aquaculture
wastewater,
A.
achieved
phosphorus
efficiencies
up
to
93
%
68
%,
respectively,
within
24
h.
It
also
removed
CO2
at
rates
five
times
higher
than
global
forest
average
enhanced
dissolved
oxygen
levels,
reducing
impact
nutrient-rich
minimizing
freshwater
demand.
Notably,
effectively
utilized
with
ammonia
concentrations
600
μM
conditions
27-34
ppt.
These
results
demonstrate
large-scale
reduction,
providing
a
sustainable
solution
impacts
livestock
industry.
Marine Pollution Bulletin,
Год журнала:
2024,
Номер
206, С. 116664 - 116664
Опубликована: Июль 9, 2024
Taiwan
has
pledged
to
achieve
net-zero
carbon
emissions
by
2050,
but
the
current
extent
of
sinks
in
remains
unclear.
Therefore,
this
study
aims
first
review
existing
nature-based
on
land
and
oceans
around
Taiwan.
Subsequently,
we
suggest
potential
strategies
reduce
CO
Journal of Marine Science and Engineering,
Год журнала:
2024,
Номер
12(11), С. 2061 - 2061
Опубликована: Ноя. 13, 2024
Coastal
blue
carbon
ecosystems
sequester
carbon,
storing
it
as
plant
biomass
and
particulate
organic
matter
in
sediments.
Recent
studies
emphasize
the
importance
of
incorporating
dissolved
inorganic
forms
into
assessments.
As
sediment-stored
decomposes,
releases
(DIC)
total
alkalinity
(TA),
both
which
are
critical
for
regulating
partial
pressure
CO2
(pCO2)
thus
sequestration.
This
study
investigated
role
benthic
DIC
TA
fluxes
sequestration
within
seagrass
meadows
Dongsha
Island’s
inner
lagoon
(IL)
during
winter
summer
seasons.
Chamber
incubation
experiments
revealed
elevated
compared
to
global
averages
(107
±
75.9
119
144
vs.
1.3
1.06
mmol
m−2
d−1
DIC,
69.7
40.7
75.8
81.5
0.52
0.43
TA).
Despite
being
approximately
1.5
times
higher
than
fluxes,
water
pCO2
levels
remained
low
(149
26
156
18
µatm).
Mass
balance
calculations
further
indicated
that
was
predominantly
reabsorbed
through
photosynthesis
(−135
−128
d−1).
Conversely,
accumulated
largely
exported
(−60.3
−53.7
d−1),
demonstrating
natural
ocean
enhancement
(OAE).
highlights
crucial
IL
coastal
net
autotrophy
carbonate
dissolution.
Future
research
should
explore
implications
these
processes
assess
potential
OAE
other
ecosystems.
Plants,
Год журнала:
2023,
Номер
12(20), С. 3609 - 3609
Опубликована: Окт. 18, 2023
Food
production
is
facing
challenging
times
due
to
the
pandemic,
and
climate
change.
With
expected
double
by
2050,
there
a
need
for
new
paradigm
in
sustainable
animal
feed
supply.
Seaweeds
offer
highly
valuable
opportunity
this
regard.
are
classified
into
three
categories:
brown
(Phaeophyceae),
red
(Rhodophyceae),
green
(Chlorophyceae).
While
they
have
traditionally
been
used
aquafeed,
their
demand
market
growing,
parallelly
increasing
according
food
demand.
Additionally,
seaweeds
being
promoted
nutritional
benefits,
which
contribute
health,
growth,
performance
of
animals
intended
human
consumption.
Moreover,
contain
biologically
active
compounds
such
as
polyunsaturated
fatty
acids,
antioxidants
(polyphenols),
pigments
(chlorophylls
carotenoids),
possess
beneficial
properties,
including
antibacterial,
antifungal,
antiviral,
antioxidant,
anti-inflammatory
effects
act
prebiotics.
This
review
offers
perspective
on
valorization
macroalgae
biomass
profile
bioactive
components,
potential
play
crucial
role
growth
making
possible
sources
healthy
ingredients.
Frontiers in Marine Science,
Год журнала:
2023,
Номер
10
Опубликована: Ноя. 30, 2023
Macroalgae
offshore
cultivation
and
sinking
is
considered
a
potentially
practical
approach
for
ocean-based
carbon
dioxide
removal.
However,
several
considerations
need
to
be
resolved
assess
the
effectiveness
sustainability
of
this
approach.
Currently,
studies
focus
on
area
required
climate-relevant
sequestration
through
macroalgae
without
considering
realistic,
global
spatial
limitations.
This
study
uses
spatially-explicit
suitability
assessment
model
optimised
open-ocean
afforestation
site
designation.
By
applying
specific
maritime,
ecological
industrial
constraints,
two
maps
are
produced:
a)
suitable
areas
sinking,
b)
only
(for
purposes).
These
data
provide
more
realistic
quantifying
ocean
surface
(including
corresponding
depths)
within
spatially
sustainable
framework.
The
resulting
estimate
respective
EEZs
world
countries.
A
total
calculated
at
10.8M
km
2
,
whereas
sinking-only
account
32.8M
ocean.
implications
patterns
national
levels
discussed.
We
suggest
that
concept
‘g
row
nearshore,
sink
offshore’
should
explored
as
an
alternative
cultivation.
