The
large
yield
of
anaerobic
digestates
and
the
suboptimal
efficacy
nutrient
slow-release
severely
limit
its
practical
application.
To
address
these
issues,
a
new
biochar
based
fertilizer
(MAP@BRC)
was
developed
using
biogas
residue
(BRC)
to
recover
nitrogen
phosphorus
from
slurry.
release
patterns
MAP@BRC
mechanisms
for
enhancing
soil
fertility
were
studied,
it
demonstrated
excellent
performance,
with
59%
total
50%
rates
within
28
days.
This
attributed
coupling
mechanism
involving
dissolution
struvite
skeletons
pores.
Pot
experiments
showed
that
crop
water
productivity
doubled
in
group
compared
unfertilized
planting.
application
also
improved
levels,
reduced
acidification,
increased
microbial
populations,
decreased
heavy
metal
pollution
risk.
key
factors
contributed
improvement
by
an
increase
available
optimization
pH
levels
soil.
Overall,
is
safe,
exhibits
biochar-fertilizer
interactions
synergistic
effects.
prepared
treating
phosphorus-rich
slurry
nitrogen-rich
slurry,
simultaneously
addresses
problems
associated
livestock
waste
treatment
provides
promising
strategy
promote
zero-waste
agriculture.
Polymers,
Год журнала:
2023,
Номер
15(17), С. 3643 - 3643
Опубликована: Сен. 4, 2023
Agriculture
is
facing
challenges
such
as
water
scarcity,
low
fertilizer
utilization,
food
security
and
environmental
sustainability.
Therefore,
the
development
of
slow-release
(SRF)
with
controlled
retention
release
particularly
important.
Slow-release
hydrogel
(SRFH)
has
a
three-dimensional
(3D)
network
structure
combined
processing,
displaying
excellent
hydrophilicity,
biocompatibility
controllability.
Cellulose
abundant
hydroxyl
groups
well
outstanding
biodegradability
special
mechanical
properties,
which
make
it
potential
candidate
material
for
fabrication
hydrogels.
This
work
would
analyze
discuss
various
methods
preparing
stimulus-responsive
cellulose
hydrogels
their
combinations
different
fertilizers.
Moreover,
application
mechanism
in
SRF
have
been
summarized
well.
Finally,
we
explore
issues
serving
an
SRF,
propose
reasonable
solutions
give
outlook
future
research
directions.
Heliyon,
Год журнала:
2024,
Номер
10(15), С. e34981 - e34981
Опубликована: Июль 20, 2024
BackgroundUrea
is
a
fertilizer
widely
used
by
farmers,
especially
vegetable
due
to
its
high
nitrogen
content,
around
46
%.
However,
plants
only
use
small
amount
of
nitrogen,
maximum
35
%,
while
the
remaining
wasted
and
released
into
environment.
Undeniably,
it
causes
increases
production
costs
environmental
problems.
A
slow-release
urea
(SRF)
has
been
formulated
resolve
these
issues.MethodsIn
this
study,
membrane
was
made
chitosan
with
several
crosslinking
agents
such
as
Tripolyphosphate
(TPP).
In
addition,
calcium
ion
bonds
are
expected
increase
interaction
through
encapsulation
process.The
resultsOur
data
showed
that
chitosan/TPP/Ca
membrane,
successfully
synthesized.
This
characteristics
thin
white
layer
transparent.
The
physical
chemical
characterization
SRF
membranes
various
coating
variations
chitosan/TPP/Ca-urea
Young's
modulus
7.75–22.05
N/mm2,
swelling
109.52–132.62
%
porosity
0.756–1.06
Functional
group
analysis
shows
spectral
changes
indicate
presence
process
between
functional
groups
TPP.
release
results
show
diffusion
mechanism.
Furthermore,
SEM
have
pores
shapes
sizes.ConclusionBased
on
result,
can
be
concluded
modification
addition
TPP
oxide
provides
improved
characteristic
cs
including
degree
development,
hydrophobicity,
stress,
membrane.
indicating
suitability
fertilizer.
