Environmental Pollutants and Bioavailability,
Journal Year:
2024,
Volume and Issue:
36(1)
Published: Feb. 6, 2024
Ethanol
combined-ball
milling
was
used
to
modify
corn-stover
biochar.
The
adsorption
performance
and
mechanisms
of
aqueous
norfloxacin
(NOR)
onto
the
resulting
biochar
(C2H6O-BC)
were
evaluated.
Ball-milling
modulated
its
surface
oxygen-containing
functional
groups
enhanced
specific
area.
capacity
C2H6O-BC
163
mg·g−1,
about
72%
equilibrium
could
be
reached
within
60
min.
electrostatic
interaction
not
dominant
mechanism
when
initial
pH
lower
than
8.00.
antagonistic
effect
Cu(II)
on
NOR
observed.
fixed-bed
column
showed
potential
remove
spontaneously.
Sequential
two-stage
batch
reaction
experiment
that
it
a
fast
efficient
technology
using
C2H6O-BC.
suggested
as
π-π
interactions,
H-bonding
pore-filling.
In
summary,
ethanol-combined
ball
in
this
study
provided
an
adsorbent
for
NOR.
Chemical Engineering Journal,
Journal Year:
2022,
Volume and Issue:
441, P. 135915 - 135915
Published: March 22, 2022
Seaweed
is
considered
a
third-generation
biomass
for
transport
biofuel
production
with
great
potential
bioenergy
and
biorefinery
applications.
Microwave-assisted
hydrothermal
carbonization
(HTC)
offers
conversion
route
seaweed
valorization
to
multiple
value-added
products.
However,
the
HTC
products
(such
as
hydrochar
process
liquor)
are
highly
dependent
on
feedstock
properties
conditions.
This
study
investigated
of
Laminaria
digitata
range
(primarily
including
hydrochar,
levulinic
acid
5-hydroxymethylfurfural)
through
microwave-assisted
at
low
temperatures
(160,
180
200
°C)
levels
dilute
addition
(1,
2
4%
H2SO4
concentration).
The
work
suggests
an
optimized
temperature
°C
H2SO4,
5-hydroxymethylfurfural
in
liquor
achieved
highest
yields
12.5%
(12.5
g
per
100
dry
L.
digitata)
5.8%,
respectively.
obtained
had
higher
heating
value
25.5
MJ/kg
volatile
solids,
comparable
lignite
coal.
At
such
condition
total
carbon
recovery
produced
accounted
84%
original
seaweed.
derived
presented
content
65.4%,
but
lowest
abundance
oxygen-containing
functional
groups
compared
hydrochars
under
other
conditions
(160
°C).
economic
benefits
might
be
significantly
increased
if
was
upgraded
into
activated
instead
being
used
solid
fuel.
