Separation Science and Technology,
Journal Year:
2024,
Volume and Issue:
59(15), P. 1344 - 1358
Published: Aug. 21, 2024
A
new
composite
material,
named
TSC/AXAD-2,
was
developed
by
incorporating
a
bis-thiosemicarbazone
derivative
(TSC)
into
Amberlite
XAD-2
to
extract
Pb2+
ions
from
wastewater.
The
characterized
using
XPS,
TGA,
FTIR,
BET,
EDX,
1H-NMR,
13C-NMR,
and
GC-MS
analyses.
sorption
parameters,
such
as
pH
value
of
media,
equilibrium
time,
initial
ion
concentration,
dose,
temperature,
eluting
agents,
were
methodically
optimized.
utmost
adsorption
capacity
is
45.3
mg.g−1;
it
achieved
at
5.5,
15
min
agitation,
room
concentration
200
mg.L−1
ions.
isotherm
studies
revealed
that
the
process
closely
matches
Langmuir
model,
with
theoretical
retention
46.12
mg.g−1.
Furthermore,
kinetic
modeling
pseudo-first-order
accurately
depicted
thermodynamic
study
suggested
exothermic,
spontaneous,
more
favorable
lower
temperatures.
desorption
loaded
conducted
1.0
M
either
HCl
or
HNO3.
TSC/AXAD-2
successfully
met
WHO
FAO
guidelines
for
removal
wastewater
before
its
discharge
marine
environment.
Foods,
Journal Year:
2023,
Volume and Issue:
12(17), P. 3181 - 3181
Published: Aug. 24, 2023
In
recent
years,
there
has
been
growing
interest
in
bioactive
plant
compounds
for
their
beneficial
effects
on
health
and
potential
reducing
the
risk
of
developing
certain
diseases
such
as
cancer,
cardiovascular
diseases,
neurodegenerative
disorders.
The
extraction
techniques
conventionally
used
to
obtain
these
phytocompounds,
however,
due
use
toxic
solvents
high
temperatures,
tend
be
supplanted
by
innovative
unconventional
techniques,
line
with
demand
environmental
economic
sustainability
new
chemical
processes.
Among
non-thermal
technologies,
cold
plasma
(CP),
which
successfully
some
years
food
industry
a
treatment
improve
shelf
life,
seems
one
most
promising
solutions
green
CP
is
characterized
its
low
impact,
cost,
better
yield
phytochemicals,
saving
time,
energy,
compared
other
classical
light
considerations,
this
review
aims
provide
an
overview
critical
issues
related
particularly
polyphenols
essential
oils.
To
current
knowledge
status
future
insights
sector,
bibliometric
study,
providing
quantitative
information
research
activity
based
available
published
scientific
literature,
was
carried
out
VOSviewer
software
(v.
1.6.18).
Scientometric
analysis
seen
increase
studies
over
past
two
underlining
community
natural
substance
technique.
literature
analyzed
have
shown
that,
general,
able
oil
polyphenols.
Furthermore,
composition
phytoextract
obtained
would
appear
influenced
process
parameters
intensity
(power
voltage),
working
gas
used.
showed
that
best
yields
terms
total
antioxidant
antimicrobial
properties
phytoextracts
were
using
mild
conditions
nitrogen
gas.
non-conventional
technique
very
recent,
further
are
needed
understand
optimal
adopted,
above
all,
in-depth
mechanisms
plasma–plant
matrix
interaction
verify
possibility
any
side
reactions
could
generate,
highly
oxidative
environment,
potentially
hazardous
substances,
limit
exploitation
at
industrial
level.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(6), P. 336 - 336
Published: May 22, 2024
Biodiesel
is
a
mixture
of
fatty
acid
alkyl
esters
(FAAEs)
mainly
produced
via
transesterification
reactions
among
triglycerides
and
short-chain
alcohols
catalyzed
by
chemical
catalysts
(e.g.,
KOH,
NaOH).
Lipase-assisted
enzymatic
has
been
proposed
to
overcome
the
drawbacks
synthesis,
such
as
high
energy
consumption,
expensive
separation
catalyst
from
reaction
production
large
amounts
wastewater
during
product
purification.
However,
one
main
this
process
enzyme
cost.
In
recent
years,
nano-immobilized
lipases
have
received
extensive
attention
in
design
robust
industrial
biocatalysts
for
biodiesel
production.
To
improve
lipase
catalytic
efficiency,
magnetic
nanoparticles
(MNPs)
attracted
growing
interest
versatile
carriers,
owing
their
unique
properties,
surface-to-volume
ratio
loading
capacity,
low
cost
inertness
against
microbial
degradation,
biocompatibility
eco-friendliness,
standard
synthetic
methods
large-scale
and,
most
importantly,
which
provide
possibility
immobilized
be
easily
separated
at
end
applying
an
external
field.
For
preparation
effective
nano-supports,
various
surface
functionalization
approaches
developed
immobilize
broad
range
industrially
important
lipases.
Immobilization
generally
improves
chemical-thermal
stability
wide
pH
temperature
may
also
modify
its
performance.
Additionally,
different
can
co-immobilized
onto
same
nano-carrier,
highly
strategy
enhance
yield,
specifically
those
feedstocks
containing
heterogeneous
free
acids
(FFAs).
This
review
will
present
update
on
use
iron
oxide
nanostructures
immobilization
catalyze
The
following
aspects
covered:
(1)
common
organic
modifiers
nanoparticle
support
(2)
studies
modified
MNPs-lipase
Aspects
concerning
procedures
nano-supports
highlighted.
features
that
characterize
these
nano-biocatalysts,
activity,
reusability,
resistance
heat
pH,
discussed.
Perspectives
key
considerations
optimizing
terms
sustainability
are
provided
future
studies.
