ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(43), P. 15893 - 15900
Published: Oct. 17, 2024
Deep
eutectic
solvents
(DES),
especially
those
derived
from
cholinium
chloride
([Ch]Cl),
have
been
studied
as
alternative
for
various
chemical
processes.
Despite
their
widespread
use,
the
understanding
of
possible
formation
impurities
in
these
solvents,
such
esters,
is
still
incomplete.
In
this
study,
thermal
and
long-term
stability
[Ch]Cl-based
DES
were
investigated.
Specifically,
three
with
carboxylic
acids
(acetic
acid,
formic
lactic
acid
-
mixtures
water
The
results
show
that
formed
[Ch]Cl:
has
lower
stability,
but
addition
to
significantly
reduces
rate
ester
formation.
acetic
found
exhibit
good
stability.
However,
disadvantage
containing
a
significant
amount
lactide
originally.
It
noteworthy
esterification
preparation
only
took
place
at
temperatures
up
40
°C
no
further
formed,
making
it
most
suitable
processes
temperature.
summary,
choice
appears
influence
formation,
temperature
accelerating
reaction
playing
crucial
role
slowing
long
term,
however,
be
unavoidable,
continues
even
after
its
production.
Therefore,
investigating
combinations,
focus
on
content
process,
essential.
Carbohydrate Polymer Technologies and Applications,
Journal Year:
2023,
Volume and Issue:
7, P. 100396 - 100396
Published: Nov. 22, 2023
Lignocellulose
biomass
(LCB)
is
a
plant
mainly
composed
of
cellulose,
hemicellulose,
and
lignin.
Cellulose
the
most
abundant
biodegradable
polymer
on
Earth
very
useful
for
various
applications.
However,
complex
structure
lignocellulosic
biomass,
in
which
cellulose
tightly
bound
to
hemicellulose
lignin,
poses
significant
challenges
isolation
from
LCB
components.
This
necessitates
efficient
pretreatment
techniques
enable
separation.
Conventional
methods
are
not
sustainable
because
they
involve
use
harsh
chemicals,
elevated
temperatures,
high
energy
consumption,
low
productivity,
formation
fermentation
inhibitors
can
increase
cost
processing
with
negative
environmental
impacts.
Green
have
been
proposed
address
these
issues
using
milder
more
approaches.
These
green
evaluated
terms
their
delignification
efficiency,
reduced
solvent
requirement,
impact,
economic
viability,
relevance
recent
advancements
technologies.
review
provides
overview
application
environmentally
friendly
as
well
potential
key
feedstock
bioeconomy
by
showcasing
versatility
industrial
Bioresource Technology,
Journal Year:
2023,
Volume and Issue:
388, P. 129744 - 129744
Published: Sept. 9, 2023
Considering
the
urgent
need
for
alternative
biorefinery
schemes
based
on
sustainable
development,
this
review
aims
to
summarize
state-of-the-art
in
use
of
deep
eutectic
solvent
pretreatment
fractionate
lignocellulose,
with
a
focus
lignin
recovery.
For
that,
key
parameters
influencing
process
are
discussed,
as
well
various
strategies
enhance
efficiency
explored.
Moreover,
describes
challenges
and
opportunities
associated
valorization
extraction-derived
streams
highlights
recent
advancements
recovery
techniques.
Furthermore,
utilization
computational
models
design
optimization
is
introduced,
initial
attempts
at
economic
environmental
assessment
lignocellulosic
bioprocess
solvents.
Overall,
offers
comprehensive
perspective
advances
emerging
field
serves
foundation
further
research
potential
integration
multi-product
schemes.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: March 30, 2024
Abstract
This
research
aimed
to
study
on
nanocellulose
production
from
palm
bunch
using
process
design
and
cost
analysis.
Choline
chloride
based
deep
eutectic
solvent
pretreatment
was
selected
for
high-purity
cellulose
separation
at
mild
condition,
followed
by
nano-fibrillation
mechanical
treatment.
Three
types
of
choline
chloride-based
solvents
employing
different
hydrogen-bond
donors
(HBDs)
namely
lactic
acid,
1,3-butanediol
oxalic
acid
were
studied.
The
optimal
extraction
condition
chloride/lactic
(ChLa80C)
empty
80
°C
bleaching
yielding
94.96%w/w
content
in
product.
Size
reduction
ultrasonication
high-pressure
homogenization
produced
67.12%w/w
raw
material.
Different
morphologies
tunable
the
forms
nanocrystals,
nano-rods
nanofibers
dissimilar
solvents.
work
offered
a
sustainable
environmentally
friendly
as
well
provided
analysis
DES
overview
operating
production.
Application
fabrication
highly
functional
biodegradable
material
nanomedicine,
electronic,
optical,
micromechanical
devices
is
achievable
near
future.
Industrial Crops and Products,
Journal Year:
2024,
Volume and Issue:
216, P. 118761 - 118761
Published: May 17, 2024
Five
deep
eutectic
solvents
(DES)
were
evaluated
to
disrupt
Paulownia
wood
structure
produce
bioethanol
and
lignin.
The
DES
formulated
with
choline
chloride:lactic
acid
provided
the
most
promising
result.
Temperature
(110–130
°C),
residence
time
(30–120
min),
molar
ratio
(1:2–1:9),
liquid-to-solid
(8–15
mL/g)
optimized
for
cellulose
recuperation
(93%
retained
in
solid
phase)
lignin
removal
(94%
delignification
yield).
spent
was
used
production,
achieving
up
43.6
g
ethanol/L
(89.7%
ethanol
Lignin
(84%
of
purity)
isolated
from
black
liquor
thoroughly
characterized
by
FTIR,
1H
NMR,
TGA-DTG
SEM,
while
after
precipitation
chemically
monomers/oligomers,
total
phenolic
content,
antioxidant
activity
phytochemical
profile
(highlighting
presence
25.06,
10.21
2.51
mg
syringaldehyde,
vanillin
3,4-dihydroxibenzoic
per
initial
biomass).
Overall,
this
study
show
that
pre-treatment
is
a
strategy
simultaneous
extraction
digestibility
enhancement.
Environment Development and Sustainability,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 23, 2024
Abstract
Growing
interest
in
lignocellulosic
bioethanol
stems
from
the
European
Union's
renewable
energy
directive,
targeting
a
global
output
of
130
billion
L
to
achieve
minimum
threshold
42.5%.
Despite
industrialization
challenges,
recent
advancements,
especially
crucial
stages
like
pretreatment,
hydrolysis,
and
fermentation,
are
transforming
landscape.
This
review
delves
into
progress
production,
addressing
technological,
environmental,
economic
hurdles.
Innovations
such
as
deep
eutectic
solvent
pretreatment
mechanocatalysis,
offering
advantages
30%
100%
solid
loading,
respectively,
surpass
traditional
techniques
enzymatic
hydrolysis
yielding
better
results.
Improved
methods,
enzyme
exploration,
saccharification
techniques,
genetic
engineering,
integrated
biorefineries
contribute
overall
viability.
Ongoing
research
involves
techno-economic
analysis
for
cost-effective
strategies,
aiming
enhance
competitiveness
production.
Scrutinizing
feasibility
these
innovative
approaches
not
only
highlights
their
potential
overcome
existing
shortcomings
but
also
envisions
more
attractive
future
industrial
Embracing
advancements
could
pave
way
vibrant
sustainable
industry.
