Traditional
lignocellulosic
biomass
utilization
techniques
struggle
to
stop
the
undesirable
reactive
intermediate
condensation
in
industrial
applications
during
deconstruction.
By
either
selectively
catalyzing
conversion
of
these
intermediates
stable
derivatives,
lignin-first
biorefinery
prevents
or
their
formation
by
modifying
natural
building
blocks
intermediates.
This
approach
has
emerged
as
one
most
efficient
ways
produce
novel
platform
chemicals
from
lignin
because
it
depolymerizes
native
effectively.
The
strategy
is
a
catalyst-dependent,
heterogeneous
process
that
involves
following
three
main
steps:
solvolysis,
fractionalization
depolymerization,
and
reductive
stabilization.
obtained
monolignol
phenolic
units
can
then
be
utilized
substrates
for
producing
pharmaceuticals,
bio-based
fuels,
polymers,
aromatic
etc.
In
this
chapter,
revolutionary
"lignin-first"
method
catalytic
valorization
discussed.
Recycling,
Journal Year:
2023,
Volume and Issue:
8(4), P. 61 - 61
Published: July 20, 2023
The
sustainable
management
of
lignocellulosic
agricultural
waste
has
gained
significant
attention
due
to
its
potential
for
the
production
valuable
products.
This
paper
provides
an
extensive
overview
valorization
strategies
employed
convert
into
economically
and
environmentally
manuscript
examines
conversion
routes
products
from
waste.
These
include
biofuels,
such
as
bioethanol
biodiesel,
via
biochemical
thermochemical
processes.
Additionally,
synthesis
platform
chemicals,
furfural,
levulinic
acid,
xylose,
is
explored,
which
serve
building
blocks
manufacturing
polymers,
resins,
other
high-value
chemicals.
Moreover,
this
highlights
in
generating
bio-based
materials,
including
composites,
plastics,
adsorbents.
utilization
feedstock
enzymes,
organic
acids,
bioactive
compounds
also
discussed.
challenges
opportunities
associated
with
are
addressed,
encompassing
technological,
economic,
environmental
aspects.
Overall,
a
comprehensive
waste,
highlighting
significance
transitioning
towards
circular
bioeconomy.
insights
presented
here
aim
inspire
further
research
development
field
valorization,
fostering
innovative
approaches
promoting
abundant
resource
Molecules,
Journal Year:
2023,
Volume and Issue:
29(1), P. 98 - 98
Published: Dec. 22, 2023
Lignocellulosic
biomass
represents
the
most
abundant
renewable
carbon
source
on
earth
and
is
already
used
for
energy
biofuel
production.
The
pivotal
step
in
conversion
process
involving
lignocellulosic
pretreatment,
which
aims
to
disrupt
lignocellulose
matrix.
For
effective
a
comprehensive
understanding
of
intricate
structure
its
compositional
properties
during
component
disintegration
subsequent
essential.
presence
lignin-carbohydrate
complexes
covalent
interactions
between
them
within
matrix
confers
distinctively
labile
nature
hemicellulose.
Meanwhile,
recalcitrant
characteristics
lignin
pose
challenges
fractionation
process,
particularly
delignification.
Delignification
critical
that
directly
impacts
purity
facilitates
breakdown
bonds
surrounding
cellulose.
This
article
discusses
two-step
approach
efficient
extraction,
providing
viable
paths
lignin-based
valorization
described
literature.
allows
creation
individual
streams
each
component,
tailored
extract
their
corresponding
compounds.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(4), P. 553 - 553
Published: Feb. 18, 2024
The
demand
for
high-performance
bio-based
materials
towards
achieving
more
sustainable
manufacturing
and
circular
economy
models
is
growing
significantly.
Kraft
lignin
(KL)
an
abundant
highly
functional
aromatic/phenolic
biopolymer,
being
the
main
side
product
of
pulp
paper
industry,
as
well
recent
2nd
generation
biorefineries.
In
this
study,
KL
was
incorporated
into
a
glassy
epoxy
system
based
on
diglycidyl
ether
bisphenol
A
(DGEBA)
amine
curing
agent
(Jeffamine
D-230),
utilized
partial
replacement
DGEBA
prepolymer
or
reactive
additive.
D-230
by
pristine
(unmodified)
up
to
14
wt.%
achieved
while
KL–epoxy
composites
with
30
exhibited
similar
thermo-mechanical
properties
substantially
enhanced
antioxidant
compared
neat
polymer.
Additionally,
effect
particle
size
investigated.
Ball-milled
kraft
(BMKL,
10
μm)
nano-lignin
(NLH,
220
nm)
were,
respectively,
obtained
after
ball
milling
ultrasonication
were
studied
additives
in
same
system.
Significantly
improved
dispersion
obtained,
mainly
nano-lignin,
which
fully
transparent
lignin–epoxy
higher
tensile
strength,
storage
modulus
glass
transition
temperature,
even
at
loadings.
Lastly,
glycidylized
(GKL)
prepolymer,
38
fossil-based
DGEBA.
GKL
transparency.
All
lignins
extensively
characterized
using
NMR,
TGA,
GPC,
DLS
techniques
correlate
justify
polymer
characterization
results.
