International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(21), С. 11732 - 11732
Опубликована: Окт. 31, 2024
This
study
developed
mycelial
biochar
composites,
BQH-AN
and
BQH-MV,
with
stable
physicochemical
properties
significantly
improved
adsorption
capabilities
through
microbial
modification.
The
results
showed
that
the
specific
surface
area
porosity
of
(3547.47
m
Sustainability,
Год журнала:
2025,
Номер
17(5), С. 2170 - 2170
Опубликована: Март 3, 2025
This
study
is
constituted
of
the
chemical
activation
camelina
meal
(CM)
biochar
and
utilization
these
activated
carbon
for
adsorption
perfluorooctanoic
acid
(PFOA)
from
water.
Camelina
meal,
a
sustainable
agro-based
byproduct,
underwent
slow
pyrolysis
subsequent
with
potassium
carbonate
(K2CO3),
hydroxide
(KOH),
sodium
(NaOH).
Among
activating
agents,
KOH
emerged
as
one
most
efficient
yielding
superior
surface
properties
significantly
higher
content.
After
screening
central
composite
design
(CCD)
was
employed
to
optimize
critical
constraints
like
temperature
(600–900
°C),
time
(60–120
min),
KOH-to-feed
ratio
(0.5–1.5),
objective
maximizing
area
capacities
samples.
The
exhibited
substantial
enhancement
in
PFOA
efficacy.
Optimal
achieved
using
produced
at
800
°C
an
60
min
1.5.
material
1558.4
m2/g
demonstrated
removal
efficiency
92.3%.
findings
underscore
efficacy
chemically
ecological
adsorbent
remediation
PFOA-polluted
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 16, 2025
Mn(II)
oxidation
by
chlorine
under
neutral
pH
conditions
is
inherently
slow.
Previous
studies
have
demonstrated
that
a
few
milligrams
per
liter
of
powdered
activated
carbon
(PAC)
can
dramatically
accelerate
this
process,
but
catalytic
efficiency
varies
widely
across
different
PAC
types.
In
study,
various
chemical
and
physical
modifications
were
applied
to
coal-
straw-based
enhance
their
identify
the
key
characteristics
decisively
influencing
catalysis.
The
results
showed
treatments
with
HNO3
or
NaOH
had
no
notable
impact
on
PAC-catalyzed
oxidation.
contrast,
modifications,
steam-reactivation,
ultrasonication
substantially
enhanced
PAC's
performance,
increasing
rates
50-300%.
Characterization
revealed
alterations
in
surface
functional
groups,
induced
treatments,
noticeable
Instead,
enhancements
pore
structure
achieved
through
remarkably
accelerated
process.
specific
area
exhibited
strong
positive
correlation
both
decay
rates.
retained
(not
water)
occurrence
reactions
pores.
increased
local
concentrations
reactants
confined
catalysis
nanoscale
pores
proposed
interpret
rapid