Minerals,
Год журнала:
2023,
Номер
13(10), С. 1337 - 1337
Опубликована: Окт. 17, 2023
To
enhance
the
sorption
efficacy
of
attapulgite
for
heavy
metals,
mercapto-functionalized
(ATP-SH)
was
synthesized
with
mercaptan
functional
groups.
When
mass-to-volume
ratio
calcined
(ATP-C)
to
3-Mercapropyltrimethoxysilane
(MPTMS)
1
g:0.5
mL
(ATP-SH-0.5)
and
pH
set
8,
a
strong
adsorption
capacity
Cd
(II)
Pb
demonstrated.
This
indicates
excellent
performance
these
metals.
ATP-SH-0.5
exhibited
maximum
43.81
mg/g
274.83
(II),
respectively,
in
single
ion
system.
In
binary
system,
31.86
mg/L
254.45
respectively.
Various
characterizations
experiments
showed
that
onto
involves
exchange
reactions
involving
hydroxyl
thiol
group
complexation
reactions.
process
follows
single-molecule
layer
mechanism.
XPS
results
indicate
grafted
groups
on
surface
participated
resulting
formation
Cd-S
Pb-S
species.
Overall,
this
study
provides
promising
modification
material
remediation
polluted
water
soil.
Inorganic Chemistry Frontiers,
Год журнала:
2023,
Номер
10(20), С. 6045 - 6057
Опубликована: Янв. 1, 2023
In
the
synthesized
BC/BWI
catalyst,
introduction
of
biochar
and
construction
Z-type
heterojunctions
accelerated
photogenerated
carrier
separation
to
reach
an
efficient
removal
tetracycline.
Environmental Chemistry Letters,
Год журнала:
2023,
Номер
21(6), С. 3159 - 3244
Опубликована: Авг. 17, 2023
Abstract
Traditional
fertilizers
are
highly
inefficient,
with
a
major
loss
of
nutrients
and
associated
pollution.
Alternatively,
biochar
loaded
phosphorous
is
sustainable
fertilizer
that
improves
soil
structure,
stores
carbon
in
soils,
provides
plant
the
long
run,
yet
most
biochars
not
optimal
because
mechanisms
ruling
properties
poorly
known.
This
issue
can
be
solved
by
recent
developments
machine
learning
computational
chemistry.
Here
we
review
phosphorus-loaded
emphasis
on
chemistry,
learning,
organic
acids,
drawbacks
classical
fertilizers,
production,
phosphorus
loading,
release.
Modeling
techniques
allow
for
deciphering
influence
individual
variables
biochar,
employing
various
supervised
models
tailored
to
different
types.
Computational
chemistry
knowledge
factors
control
binding,
e.g.,
type
compound,
constituents,
mineral
surfaces,
binding
motifs,
water,
solution
pH,
redox
potential.
Phosphorus
release
from
controlled
coexisting
anions,
adsorbent
dosage,
initial
concentration,
temperature.
Pyrolysis
temperatures
below
600
°C
enhance
functional
group
retention,
while
450
increase
plant-available
phosphorus.
Lower
pH
values
promote
release,
higher
hinder
it.
Physical
modifications,
such
as
increasing
surface
area
pore
volume,
maximize
adsorption
capacity
biochar.
Furthermore,
acid
affects
low
molecular
weight
acids
being
advantageous
utilization.
Lastly,
biochar-based
2–4
times
slower
than
conventional
fertilizers.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Фев. 28, 2024
Abstract
Chromium
(Cr(VI))
pollution
has
attracted
wide
attention
due
to
its
high
toxicity
and
carcinogenicity.
Modified
biochar
been
widely
used
in
the
removal
of
Cr(VI)
water
as
an
efficient
green
adsorbent.
However,
existing
prepared
by
chemical
modification
is
usually
complicated
process,
cost,
secondary
pollution,
which
limits
application.
It
urgent
explore
modified
with
simple
low
cost
environmental
friendliness.
Therefore,
ball
milling
wheat
straw
(BM-WB)
was
technology
this
paper.
The
adsorption
characteristics
mechanism
BM-WB
were
analyzed
functional
group
characterization,
model
response
surface
method.
results
showed
that
effectively
reduced
particle
size
biochar,
increased
specific
area,
more
importantly,
enhanced
content
oxygen-containing
groups
on
biochar.
After
milling,
capacity
3.5–9.1
times,
reached
52.21
mg/g.
behavior
follows
pseudo-second-order
kinetics
Langmuir
isotherm
rate.
Moreover,
process
endothermic
spontaneous.
Under
optimized
conditions
pH
2,
temperature
45
°C,
adsorbent
dosage
0.1
g,
rate
solution
can
reach
100%.
mainly
based
electrostatic
attraction,
redox
complexation.
milled
a
cheap,
material,
good
application
prospect
field
remediation
water.
