Heliyon,
Journal Year:
2023,
Volume and Issue:
9(3), P. e13698 - e13698
Published: Feb. 13, 2023
Aerobic
composting
is
one
of
the
most
economical
ways
to
produce
organic
fertilizer
from
agricultural
wastes.
In
this
research,
we
independently
developed
a
simple
simulation
reactor.
The
effects
biochar
pyrolysised
at
different
pyrolysis
temperatures
(B1-450
°C;
B2-550
and
B3-650
°C)
on
nitrogen
conversion
(Total
(TN),
ammonium
(NH4+-N),
nitrate
(NO3--N),
cumulative
amount
ammonia
(CEA)
nitrous
oxide
(CEN)
emission,
loss
rate
(NLR),
etc.)
functional
microbial
community
(cbbL,
cbbM
nifH)
structure
in
system
were
studied.
Results
showed
that
addition
significantly
improved
efficiency
composting,
increased
NO3--N
concentration
reduced
NLR
(%)
(B3
(31.4
±
2.73)
Biochar,
Journal Year:
2023,
Volume and Issue:
5(1)
Published: June 1, 2023
Abstract
Herein,
a
biochar-based
composite
(Ti
3
C
2
T
x
@biochar-PDA/PEI)
was
constructed
by
decorating
Ti
and
polydopamine
on
coconut
shell
biochar
via
electrostatic
self-assembly
method.
Different
characterization
techniques
were
applied
to
explore
the
structure,
morphology
composition
of
sorbents.
It
found
that
higher
porosity
diverse
functional
groups
conducive
for
@biochar-PDA/PEI
capture
radionuclides,
water
environmental
conditions
made
great
contribution
adsorption
process.
The
process
removing
U(VI)/Cs(I)
well
complied
with
Langmuir
isotherm
Pseudo-second-order
equations,
which
indicated
single
layer
chemical
occurred
solid
liquid
interface.
Meanwhile,
this
produced
exhibited
superior
removal
performance
under
complex
co-existing
ion
environment,
maximum
amounts
U(VI)
Cs(I)
reached
up
239.7
40.3
mg
g
−1
.
Impressively,
adsorbent
still
good
after
three
cycles
regeneration.
spectral
analysis
DFT
calculation
demonstrated
might
be
process,
while
should
exchange
or
attraction.
This
study
potential
application
as
an
effective
remediation
strategy
radioactive
wastewater
cleanup.
Graphical
Biochar,
Journal Year:
2023,
Volume and Issue:
5(1)
Published: April 10, 2023
Abstract
Crystal
morphology
of
metal
oxides
in
engineered
metal-biochar
composites
governs
the
removal
phosphorus
(P)
from
aqueous
solutions.
Up
to
our
best
knowledge,
preparation
bio-assembled
MgO-coated
biochar
and
its
application
for
P
solutions
kitchen
waste
fermentation
liquids
have
not
yet
been
studied.
Therefore,
this
study,
a
needle-like
MgO
particle
coated
tea
c
omposite
(MTC)
was
prepared
through
novel
biological
assembly
template
elimination
process.
The
produced
MTC
used
as
an
adsorbent
removing
synthetic
solution
real
liquid.
maximum
sorption
capacities
MTC,
deduced
Langmuir
model,
were
58.80
mg
g
−1
at
pH
7
192.8
liquid
9.
increase
ionic
strength
(0–0.1
mol
L
NaNO
3
)
reduced
efficiency
98.53%
93.01%
but
had
no
significant
impact
on
Precipitation
MgHPO
4
Mg(H
2
PO
(76.5%),
ligand
exchange
(18.0%),
electrostatic
attraction
(5.5%)
potential
mechanisms
solution,
while
struvite
formation
(57.6%)
(42.2%)
governed
Compared
previously
reported
MgO-biochar
composites,
lower
capacity
phosphate
higher
studied
could
be
effective
candidate
environments,
especially
liquids.
In
future,
it
will
necessary
systematically
compare
performance
with
different
oxide
crystal
types
wastewater.
Graphical
