Fishes,
Год журнала:
2024,
Номер
9(5), С. 175 - 175
Опубликована: Май 12, 2024
Pacific
white
shrimp
(Penaeus
vannamei)
is
one
of
the
main
species
cultivated
around
world.
Despite
its
high
yields
and
easy
handling,
water
pollution
from
intensive
cultivation
remains
a
serious
problem
in
China.
In
this
study,
compound
aquaculture
model
P.
vannamei
spinach
(Ipomoea
aquatica)
was
used
to
investigate
effect
floating
raft
on
quality,
antioxidants,
non-specific
immune
response,
growth
performance,
microbial
diversity.
The
experimental
design
study
consisted
two
groups
with
three
replicates
for
each,
i.e.,
control
group:
aquatic
monoculture
(AM)
system
only
vannamei;
treatment
vannamei-I.
aquatica
aquaponics
(AP)
50%
cover
ratio
raft.
experiment
lasted
seven
weeks.
results
show
that
concentrations
total
phosphorus
(TP),
nitrogen
(TN),
nitrate
(NO3−-N),
ammonia
(NH4+-N),
nitrite
(NO2−-N),
active
AM
group
were
higher
than
those
AP
at
different
sampling
times.
quality
index
better
group,
indicating
can
remove
nutrients
bodies.
average
daily
gain
survival
rate
group.
antioxidant
capacity
(T-AOC),
catalase
(CAT),
superoxide
dismutase
(SOD),
malondialdehyde
(MDA),
acid
phosphatase
(ACP)
Shannon–Wiener
Simpson
indices
gut,
water,
sediment
significantly
system,
which
implied
abundance
microorganisms
system.
These
demonstrate
application
not
improve
but
also
responses
shrimp,
while
increasing
improving
ecological
benefits
terms
expenditure.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 10, 2025
Microbial
fuel
cell
(MFC)
can
convert
the
chemical
energy
of
organic
matter
in
wastewater
into
electrical
with
high
degradation
efficiency.
In
this
study,
a
type
specialized
microorganism,
Pseudomonas
aeruginosa,
was
screened
and
added
to
an
MFC
promote
generated
during
production
cytidine
acid
while
improving
performance
MFC.
The
achieved
maximum
voltage
57.7
±
4.4
mV
power
density
1.9
0.1
mW/m2;
moreover,
efficiencies
oxygen
demand
(COD),
total
phosphorus
(TP),
phosphate
reached
76.3
2.8%,
80.3
3.3%,
85.3
3.5%,
respectively.
Gas
chromatography-mass
spectrometry
(GC–MS)
metabolomics
analysis
revealed
that
aeruginosa
could
effectively
degrade
wastewater.
Additionally,
metabolic
pathways
involved
may
have
been
pyrimidine
metabolism,
arginine
proline
taurine
hypotaurine
metabolism.
Water,
Год журнала:
2025,
Номер
17(4), С. 502 - 502
Опубликована: Фев. 11, 2025
Managing
nitrogen
and
phosphorus
pollution
in
high-salinity
wastewater
is
a
critical
challenge
for
sustainable
aquaculture
environmental
protection.
In
this
study,
novel
salt-tolerant
strain,
Pseudomonas
sediminis
D4,
was
isolated
from
brackish
water
environment.
This
strain
exhibited
simultaneous
heterotrophic
nitrification–aerobic
denitrification
removal
capabilities.
Biosafety
assays
demonstrated
that
the
antibiotic-sensitive
safe
aquatic
environments.
The
optimal
conditions
phosphate
of
D4
were
carbon/nitrogen
(C/N)
ratio
10,
phosphorus/nitrogen
(P/N)
0.2,
pH
7,
temperature
30
°C
while
using
sodium
succinate
as
carbon
source.
Under
these
conditions,
achieved
efficiencies
97.36%
ammonia
(NH4+-N),
100.00%
nitrate
(NO3−-N),
98.02%
nitrite
(NO2−-N),
along
with
94.69%,
89.56%,
97.40%
PO43−P,
respectively.
strong
salinity
tolerance,
functioning
effectively
within
range
0%
to
5%
(w/v),
maintaining
high
efficiency
at
3%.
Enzyme
activity
verified
existence
key
enzymes,
such
oxidase,
oxidoreductase,
reductase,
polyphosphate
kinase,
exopolyphosphatase,
which
are
essential
nitrification-aerobic
capabilities
D4.
These
findings
highlight
potential
biological
treatment
wastewater.
