Open Access Journal of Pharmaceutical Research,
Год журнала:
2023,
Номер
7(2)
Опубликована: Янв. 1, 2023
Hydrochar
is
a
carbon-rich
material
made
from
biomass
using
hydrothermal
carbonization.
It
gaining
interest
as
potential
alternative
to
fossil
fuels
and
soil
amendment.
However,
hydrochar
production
requires
careful
management
minimize
environmental
issues
such
feedstock
availability,
greenhouse
gas
emissions,
water
usage
contamination,
waste
management,
long-term
impacts
on
quality
ecosystem
health.
Further
research
necessary
optimize
the
process
understand
its
impacts.
has
varied
applications,
including
remediation,
fuel
source,
building
material,
but
must
be
carefully
managed
negative
Proper
optimization
of
can
help
maximize
benefits
while
minimizing
Therefore,
further
crucial
carbonization
for
different
feedstocks
better
application
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
465, С. 133509 - 133509
Опубликована: Янв. 12, 2024
The
extensive
usage
of
high-density
polyethylene
(HDPE)
materials
in
marine
environments
raises
concerns
about
their
potential
contribution
to
plastic
pollution.
Various
factors
contribute
the
degradation
HDPE
environments,
including
UV
radiation,
seawater
hydrolysis,
biodegradation,
and
mechanical
stress.
Despite
supposed
long
lifespans,
there
is
still
a
lack
understanding
long-term
mechanisms
that
cause
weathering
seawater-exposed
products.
In
this
research,
impact
radiation
on
pile
sleeves
was
studied
natural
as
well
laboratory
settings
isolate
effect.
After
nine
years
exposure
environment
settings,
exhibited
an
increase
oxygen-containing
surface
functional
groups
more
morphological
changes
compared
accelerated
UVB
irradiation
laboratory.
This
indicated
combined
non-UV
may
play
major
role
than
alone.
However,
found
release
dissolved
organic
carbon
total
nitrogen
from
sleeves,
reaching
levels
up
15
mg/L
2
mg/L,
respectively.
Our
findings
underscore
significance
taking
into
account
both
when
evaluating
contributing
By
investigating
commissioned
actual
conditions
source
microplastics
organics,
study
provides
accurate
assessment
its
aging
processes
pure
laboratory-based
studies.
Although
literature
suggests
photodegradation
most
dominant
mechanism
for
HDPE,
our
results
prove
such
cannot
be
generalized
rarely
used
form
commercially.
organics
depends
additives
composition
commercial
addition
photodegradation,
stress
significant
degradation.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
317, С. 100123 - 100123
Опубликована: Янв. 1, 2024
This
work
used
the
subcritical
water
medium
to
create
hydrothermally
activated
carbon
spheres
(HACs)
from
discarded
maize
cobs.
As
a
form
of
adsorbent,
cob-produced
HACs
were
remove
Rose
Bengal
dye
aqueous
solutions.
Brunauer-Emmett-Teller
(BET)
surface
area
analysis,
X-Ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
elemental
analysis
(EDX)
and
FTIR
spectroscopy
for
analyzing
produced
HACs.
Assessing
influencing
variables
allowed
optimization
process
adsorption.
The
highest
removal
happened
at
60
min,
sorbent
dosage
1
g/L,
initial
concentration
100
mg/L
pH
3
as
consequence
procedure.
adsorption
isotherms
studied
using
Temkin,
Freundlich
Langmuir
models.
For
sorption
dye,
Freundlich's
model
is
best
equilibrium
data.
shown
by
pseudo
first
order,
according
kinetic
investigations.
Thermodynamic
analyses
demonstrated
that
was
an
exothermic
spontaneous
process.
evaluation
regeneration
spent
conducted
determine
their
reuse
ability.
results
indicate
regenerated
have
four-cycle
lifespan.
