Macromol—A Journal of Macromolecular Research,
Journal Year:
2024,
Volume and Issue:
4(4), P. 739 - 752
Published: Oct. 17, 2024
During
the
manufacturing
of
wooden
musical
instruments,
offcut
wood
pieces
are
inevitably
generated.
This
study
explores
potential
utilizing
three
types
these
small
pieces,
mahogany,
maple,
and
rosewood,
by
converting
them
into
polyurea
through
liquefied
technology
proposing
a
novel
approach
to
synthesizing
bio-based
polyurea.
is
durable
polymer,
offering
long-term
carbon
fixation
thereby
contributing
environmental
sustainability.
In
this
study,
various
liquefaction
conditions
as
parameters,
including
temperature,
sulfuric
acid
content,
mix
solvent
ratio,
time,
were
investigated
in
relation
film
properties.
The
relationship
between
mechanical
thermal
properties
resulting
films
characteristics
product
was
investigated.
Notably,
when
hydroxyl
value
exceeded
300,
derived
from
exhibited
high
tensile
strength
25
MPa.
contrast,
below
displayed
strain
up
150%,
alongside
an
increased
decomposition
temperature.
These
findings
suggest
that
can
be
effectively
tuned
manipulating
product,
promising
enhancing
instrument
manufacturing.
Current Opinion in Electrochemistry,
Journal Year:
2024,
Volume and Issue:
46, P. 101492 - 101492
Published: March 22, 2024
The
use
of
waste
biomass
as
a
precursor
for
carbon
electrodes
in
electrochemical
water
treatment
not
only
offers
resourceful
solution
to
management
challenges
but
also
constitutes
substantial
contribution
the
circular
economy.
This
paper
critically
reviews
recent
advancements
utilizing
derived
materials
treatment,
focusing
on
applications
like
advanced
oxidation
processes
(e-AOPs)
and
capacitive
deionization.
versatility
materials,
with
characteristics
such
extensive
specific
surface
areas,
high
electrical
conductivity,
tunable
hydrophobicity,
positions
them
pivotal
various
applications.
short
review
extends
bioelectrochemical
systems
(BES),
highlighting
potential
waste-derived
enhance
BES
electrode
efficiency
while
significantly
reducing
manufacturing
costs.
comprehensive
assessment
developments
provides
insights
into
strengths
weaknesses
these
future
research
directions
optimizing
electro/bioelectrochemical
broader
scale.
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(3), P. 112985 - 112985
Published: May 7, 2024
This
study
aims
to
assess
the
electrochemical
generation
of
hydrogen
peroxide
and
hydroxyl
radicals
(⁎OH)
using
carbon
cathodes
synthesized
from
three
different
lignocellulosic
residues,
Phragmites
Australis
(PA),
Cladium
Mariscus
(CM)
Typha
Domingensis
(TD).
These
vegetal
species
are
commonly
used
in
natural
wetlands
phytoremediation
processes
can
accumulate
recalcitrant
pollutants
within
these
treatment
processes,
generating
a
waste
that
should
be
properly
managed.
To
convert
residues
into
valuable
materials,
they
underwent
hydrothermal
carbonization
(HTC)
followed
by
either
chemical
activation
with
KOH
or
pyrolysis
at
1000
ºC.
The
best
results
were
obtained
chemically
activated
yielding
maximum
H2O2
concentration
313
mg
L-1
cathode
produced
PA.
specific
surface
area,
oxygenated
functional
groups
presence
structural
defects
carbonous
structures,
key
parameters
related
good
performance
as
catalysts
towards
2e-
Oxygen
Reduction
Reaction
(ORR).
It
was
also
demonstrated,
comparison
previous
studies,
heavy
metals
structure
residue
enhanced
decomposition
⁎OH.
However,
degradation
model
organic
contaminant
methylene
blue
(MB),
it
shown
⁎OH
not
main
contributors
degradation,
direct
adsorption
on
materials
played
most
significant
role.
Therefore,
outstanding
capacity
for
electrogeneration
confirmed,
suggesting
their
potential
future
application
advanced
oxidation
water
decontamination.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
912, P. 169543 - 169543
Published: Dec. 23, 2023
The
screening
of
new
effective
metal
hyperaccumulators
is
essential
for
the
development
profitable
phytoremediation
projects
in
highly
degraded
environments
such
as
mining
areas.
goal
this
research
was
to
analyze
phytoextraction
potential
native
plant
Spergularia
rubra
decontaminate
and
eventually
recover
metals
(phytomining)
from
mine
tailings
(belonging
an
abandoned
Pb/Zn
Spanish
mine)
which
it
grows
spontaneously.
To
do
so,
ability
species
accumulate
evaluated
both
under
natural
conditions
through
simple
electrokinetically
assisted
tests
using
alternating
current
different
combinations
voltage
gradient
(1/2
V
cm
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
945, P. 173897 - 173897
Published: June 18, 2024
The
improvement
of
air
quality
in
densely-populated
urban
regions
constitutes
an
environmental
challenge
increasing
concern.
In
this
respect,
the
abatement
NO
emissions,
primarily
emanating
from
combustion
processes
associated
with
motor-vehicles,
along
industrial/domestic
systems,
represents
one
main
problems.
Here,
three
hydrochars
diverse
organic
residues
were
used
as
activated
carbon
precursors
for
their
evaluation
removal
two
potential
application
scenarios.
Hydrochars
physically
at
800
°C
pure-CO2
or
diluted-O2.
These
materials
tested
a
lab-scale
biofilter
different
conditions
(NO
concentration,
temperature,
relative
humidity,
NO-containing
gas
and
particle
size)
larger-scale
to
evaluate
long-term
capacity.
Hydrochar-derived
carbons
present
relatively
well-developed
micro-
mesoporous
structure,
BET
areas
up
421
m2/g,
variety
oxygen
surface
functionalities
(carboxylic,
lactone,
carbonyl
quinone
groups),
especially
concerning
CO2-activated
carbons.
exhibited
excellent
behaviour
low
concentration
(5
ppmv)
between
25
75
capacities
≈97
%
>
82
%,
respectively;
still
good-performance
(≈66
%)
more
concentrated
(120
ppmv).
Whilst,
obtained
by
diluted-O2
activation
same
hydrochars,
evidenced
higher
capacity
loss
high
concentration.
O2
presence
stream
was
confirmed
crucial
factor
elimination,
since
both
co-adsorb
on
favouring
oxidation
NO2.
Besides,
humidity
airstream
diminished
0.88
0.51
mgNO/gcarbon,
but
remained
0.54
when
(in
pellet)
operated
9-fold
longer
test
under
humid
air.
Therefore,
study
highlights
renewable
serve
cost-effective
component
biofilters,
mitigate
emissions
exhaust
gases
biomass
boilers
semi-close
areas.
