Antibiotics
and
heavy
metals
often
co-exist
as
non-point-source
contaminants
in
wastewater
their
quite
contrary
physiochemical
properties
make
co-removal
processes
challenging.
In
this
work,
a
bifunctional
zero-valent
iron-modified
hydrochar
derived
from
walnut
peel
(MWPHC)
was
synthesized,
which
then
applied
for
the
simultaneous
removal
of
tetracycline
(TC)
Cu(II)
wastewater.
Based
on
characterizations,
Fe0
species
were
successfully
distributed
surface
substrates.
The
TC
could
be
synergistically
immobilized,
bridging
effects
observed
between
them,
MWPHC
exhibited
excellent
ability
(qmax
=
433.59
mg/g)
586.25
mg/g).
Furthermore,
engineering
feasibility
evaluated
using
column
regeneration
experiments.
These
results
shed
light
tailored
an
environmental
functional
material
pollution
control
co-existing
antibiotic
metal
agro-industrial
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(4), P. 1660 - 1660
Published: Feb. 17, 2025
Hydrothermal
carbonization
(HTC)
is
a
novel
thermochemical
process
that
turns
biomass
into
hydrochar,
substance
rich
in
carbon
has
potential
uses
advanced
material
synthesis,
energy
production,
and
environmental
remediation.
With
an
emphasis
on
important
chemical
pathways,
such
as
dehydration,
decarboxylation,
polymerization,
control
the
conversion
of
lignocellulosic
useful
this
review
critically
investigates
fundamental
chemistry
HTC.
A
detailed
analysis
conducted
effects
variables
physicochemical
characteristics
including
temperature,
pressure,
composition,
water
ratio,
residence
time.
Particular
focus
placed
new
developments
HTC
technology
improve
sustainability
efficiency,
like
recirculating
microwave-assisted
co-hydrothermal
carbonization.
Furthermore,
improvement
adsorption
capacity
for
organic
contaminants
heavy
metals
explored
relation
to
functionalization
activation
namely
through
surface
modification
KOH
treatment.
The
performance
hydrochar
biochar
adsorption,
catalysis,
storage
compared,
emphasizing
unique
benefits
difficulties
each
substance.
Although
comparatively
high
higher
heating
value
(HHV)
can
be
good
substitute
coal,
issues
with
reactor
design,
scalability,
secondary
waste
management
continue
limit
its
widespread
use.
In
order
maximize
sustainable
profitable
avenue
valorization,
study
addresses
critical
research
gaps
future
initiatives.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
274, P. 116132 - 116132
Published: March 11, 2024
The
recycling
of
industrial
solid
by-products
such
as
red
mud
(RM)
has
become
an
urgent
priority,
due
to
their
large
quantities
and
lack
reutilization
methods
can
lead
resource
wastage.
In
this
work,
RM
was
employed
fabricate
green
hydrochar
(HC)
prepare
zero-valent
iron
(ZVI)
modified
carbonous
materials,
conventional
salts
(IS,
FeCl3)
applied
comparison,
fabricated
HC
labeled
RM/HC
IS/HC,
respectively.
physicochemical
properties
these
were
comprehensively
characterized.
Further,
hexavalent
chromium
(Cr(VI))
removal
performance
assessed
(375.66
337.19
mg/g
for
respectively).
influence
dosage
initial
pH
evaluated,
while
isotherms,
kinetics,
thermodynamics
analysis
also
conducted,
mimic
the
surface
interactions.
stability
recyclability
adsorbents
verified,
practical
feasibility
by
bok
choy-planting
experiment.
This
work
revealed
that
be
used
a
high
value
fabricant
effective
contaminants
from
wastewater.
Environmental Technology & Innovation,
Journal Year:
2023,
Volume and Issue:
32, P. 103404 - 103404
Published: Oct. 11, 2023
In
this
study,
a
novel
and
effective
magnetic
watermelon
seed
hydrochar
(MWSHC)
was
successfully
synthesized
via
hydrothermal
carbonization
technique
in
situ
co-precipitation
method.
The
prepared
waste
has
been
utilized
for
the
elimination
of
cadmium
ions
from
aqueous
environment.
structural
morphology,
surface
properties,
thermal
stability
MWSHC
adsorbent
were
characterized
using
FTIR,
SEM,
XRD,
BET
area,
TGA
analysis,
which
demonstrated
successful
synthesis
MWSHC.
An
extensive
study
Cd(II)
adsorption
conducted
by
assessing
influence
contact
time,
mass,
pH,
initial
concentration,
temperature,
coexisting
cations
on
process
Cd(II).
results
revealed
that
removal
efficiency
96.60%
achieved
at
pH
7.0,
time:
300
min,
dosage:
0.01
g,
T:
298
K.
Adsorption
isotherm
kinetic
parameters
estimated.
indicated
onto
followed
Freundlich
pseudo-second-order
models.
Based
Langmuir
equation,
maximum
capacity
347.2
mg/g
reusability
nanocomposite
studied,
revealing
around
84.4%
still
removed
after
four
cycles.
conclusion,
newly-
advantages
high
capacity,
cost-effectiveness,
easy
separation,
thus
having
promising
applications
effectively
removing
cadmium(II)
