This
study
developed
an
anti-scaling
agent
from
waste
herbeus
to
address
carbonate
scale
challenges
in
membrane
desalination.
The
researchers
synthesized
a
polyphenols
lignin-based
specifically
targeting
and
sulfate
formation
reverse
osmosis
(RO)
They
investigated
the
impact
of
pH,
temperature,
salinity,
mixing
ratio
on
agent's
efficiency.
Experimental
results
showed
herbeus-based
had
outstanding
performance
inhibiting
formation,
with
95%
inhibition
efficiency
at
optimal
temperature
60°C.
effectiveness
was
strongly
influenced
by
pH
performing
best
9
(78.9%
efficiency)
20%
increase
salinity
(86.7%
efficiency).
Maintaining
specific
1:3
agent-to-water
crucial
for
maximizing
Simulation
using
OLI
ScaleChem
software
supported
experimental
findings,
consistently
demonstrating
rates
exceeding
90%
across
varying
time
conditions.
research
highlights
potential
as
effective
eco-friendly
solution
industrial
RO
desalination
processes.
offers
sustainable
approach
mitigate
scale-related
issues,
contributing
advancing
efficient
environmentally
friendly
technologies.
International Journal of Corrosion and Scale Inhibition,
Journal Year:
2024,
Volume and Issue:
13(1)
Published: March 30, 2024
Wide
application
of
electrodialysis,
which
is
proven
to
be
highly
effective
in
waste
waters
treatment
and
a
broad
spectrum
other
technologies,
restrained
by
membrane
fouling.The
present
study
dedicated
the
fluorescent-tagged
antiscalants
(ASs)
for
mitigation
scaling
calcium
carbonate
phosphate
electrodialysis
stack
within
set
model
experiments.Hydroxyethylidenebis(phosphonic
acid),
conjugated
with
naphthalimide
(HEDP-F),
two
fluoresceine-tagged
polyacrylates
(PAA-F2
PAA-F2S)
are
tested.It
demonstrated
that
all
three
ASs
efficient
CaCO3
retardation:
PAA-F2S>PAA-F2>HEDP-F.The
similar
efficiency
found
case
CaHPO4•2H2O:
PAA-F2S>PAA-F2
>>HEDP-F.At
same
time,
PAA-F2S
PAA-F2
affect
crystal
habit
both
CaHPO4•2H2O,
while
HEDP-F
does
not.However,
due
visualization
it
there
no
direct
relevance
between
scale
inhibition
efficacy
an
ability
growth
kinetics
form
deposit.The
major
effect
detected
at
nucleation
step:
increase
induction
time.However,
definite
decrease
rate
stages
following
registered
relative
blank
run.Meanwhile,
most
AS
molecules
stay
aqueous
phase
till
end
formation
only
then
do
they
begin
get
adsorbed
deposit.Notably,
CaCO3,
reveal
selective
sorption
on
vaterite,
bit
less
intensive
flake-like
modification
calcite
least
rhomboherdal
surfaces.In
way,
demonstrate
location
plate-like
modifications
but
presence
pellet-like
this
mineral.It
shown
correlation
rate.The
observed
effects
interpreted
terms
interactions
natural
nanoimpurities
acting
as
crystallization
centers
step.
Minerals,
Journal Year:
2023,
Volume and Issue:
13(4), P. 559 - 559
Published: April 17, 2023
Deposits
of
calcium
sulfate
scale
on
the
surfaces
industrial
equipment
in
distillation
facilities,
reverse
osmosis
desalination
plants,
oil
and
gas
industries
lead
to
significant
clogging
pipes
membranes
a
serious
increase
production
costs.
For
mitigation
formation,
wide
spectrum
antiscalants
is
applied.
The
present
work
dedicated
study
deposition
from
supersaturated
aqueous
solutions
presence
polyacrylic
antiscalant
with
fluorescent
marker
(naphthalimide
fragment)
PAA-F1,
which
provides
traceability
inhibitor
better
understanding
its
efficacy.
A
paradoxical
phenomenon
being
described
here.
Antiscalant
causes
change
crystal
phase
bassanite
gypsum,
significantly
reduces
amount
deposit,
but
does
not
reveal
molecules
either
at
kink,
step,
or
selected
edge
sites
deposited
crystals.
Contrary
predictions
theory,
it
stays
phase,
forms
own
separate
Ca-PAA-F1.
It
demonstrated
that
block
nuclei
surfaces,
rather
foreign
particles
nanodust
particle
sizes
around
1
nm,
naturally
occurring
any
solution.
As
result,
number
nucleation
reduced,
rate
formation
decreases
without
apparent
antiscalant–scale
interaction.
On
grounds
current
experiment,
substoichiometric
effect
inhibition
obtained
an
alternative,
quite
stoichiometric
explanation.
Crystals,
Journal Year:
2024,
Volume and Issue:
14(7), P. 650 - 650
Published: July 15, 2024
A
common
issue
in
studies
on
liquid-phase
chemical
processes
is
that
the
natural
solid
nanoimpurities
present
reagent-grade
chemicals
are
ignored.
Little
known
about
these
impurities’
nature,
sizes,
concentrations,
and
behavior,
yet
they
significantly
affect
efficiency
of
antiscalants
municipal
laboratory
solutions.
Recent
research
has
focused
on:
(i)
estimating
nanoimpurity
concentrations
in-house
deionized
water
semiconductor-grade
isopropanol
using
“light
sheet”
optical
ultramicroscopy,
(ii)
visualizing
antiscalant
sorption
impurities.
Using
a
fluorescent-tagged
aminobis(methylenephosphonic
acid)
(ADMP-F),
we
tracked
its
affinity
to
particulate
matter
KCl
Our
study
showed
total
concentration
nanoparticles
with
size
larger
than
20
nm
106
units/mL
105
isopropanol.
Extrapolation
values
≥1
resulted
1011
108
units/mL.
The
addition
or
ADMP-F
increased
foreign
nanoparticle
populations.
selectively
adsorbed
by
only
some
impurities,
while
most
molecules
remain
as
true
solution.
To
our
knowledge,
this
first
instance
fluorescently
labeled
aminoalkylphosphonates
being
able
differentiate
traces
purity
Therefore,
role
crystallization
centers
should
be
seriously
reconsidered,
especially
their
important
application
scale
inhibition.
Dyes and Pigments,
Journal Year:
2024,
Volume and Issue:
231, P. 112386 - 112386
Published: Aug. 8, 2024
Microfluidic
technologies
bring
new
tools
for
a
large
number
of
applications
in
chemistry,
biology,
and
medicine.
In
this
study,
we
the
first
time
demonstrated
systematic
synthesis
optimisation
naphthalimide
derivatives
using
microfluidic
techniques.
This
approach
was
applied
to
wide
range
dyes.
A
detailed
comparison
batch
methods
fluorescent
markers
performed.
The
results
showed
that
continuous
mode
improved
conversion
starting
compounds
increased
yield
target
compounds.
developed
exhibit
excellent
optical
properties
after
incorporation
into
polymers.
Possible
have
been
radical
copolymerization
reactions
acrylic
acid-based
salt
deposition
inhibitors,
N-acylation
PLGA
obtain
nanoparticles
drug
delivery.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(18), P. 10150 - 10150
Published: Sept. 21, 2024
A
new
green
water
treatment
agent,
a
poly(aspartic
acid)-modified
polymer
(PASP/5-AVA),
was
synthesized
using
polysuccinimide
and
5-aminovaleric
acid
(5-AVA)
in
hybrid
system.
The
structure
characterized,
the
scale
corrosion
inhibition
performance
were
carried
out
with
standard
static
electrochemical
methods,
respectively.
mechanism
explored
XRD,
XPS,
SEM,
quantum
chemistry
calculations.
results
indicated
that
PASP/5-AVA
exhibited
better
than
PASP
maintained
efficacy
thermal
stability
of
effect
for
long
time.
Mechanistic
studies
interferes
normal
generation
CaCO
Water,
Journal Year:
2024,
Volume and Issue:
16(22), P. 3158 - 3158
Published: Nov. 5, 2024
The
external
cooling
water
system
of
a
300
Mvar
dual
internal
synchronous
condenser
at
certain
ultra-high
voltage
converter
station
continued
to
exhibit
significant
scaling
and
corrosion,
even
with
regular
addition
scale
corrosion
inhibitors.
To
solve
this
problem,
the
was
sampled
tested
periodically,
main
test
items
including
conductivity,
pH
value,
turbidity,
hardness,
alkalinity,
other
quality
parameters
directly
related
scaling.
trends
these
over
time
were
also
analyzed.
results
showed
that
as
operation
increased,
became
concentrated
during
multiple
circulation
cycles,
various
dissolved
or
suspended
substances
underwent
degree
enrichment.
However,
inhibitors
did
not
dynamically
adjust
according
changes
in
quality,
there
always
an
excessive
dosage.
Thus,
using
experimental
sample,
static
inhibition
tests
rotating
coupon
conducted
evaluate
performance
commercial
AS-582
inhibitor
used
under
different
conditions.
Considering
more
obvious
corrosive
tendency
focus
on
testing
its
performance.
When
dosage
600
ppm,
effect
optimal,
rate
92.15%.
significantly
temperature.
At
25
°C,
when
500
86.79%.
temperature
increased
40
each
worse,
unable
meet
requirements,
use
combination
necessary.
This
work
will
provide
reference
for
scientific
A
critical
review
of
scale
inhibition
mechanisms
and
relative
evaluation
substoichiometric
antiscalant
performance
are
presented.
It
is
shown
that
such
widely
accepted
efficacy
as
masking
calcium
(barium,
strontium)
ions
by
formation
complexes;
ability
to
impart
electrostatic
charge
the
colloids;
change
crystalline
nature
sediment;
provide
"threshold
effect"
interacting
with
spontaneously
formed
nuclei
sparingly
soluble
salt
unlikely
main
contribution
phenomenon.
At
same
time,
it
isolation
crystallization
templates
solid
nanoimpurities
key
importance
in
retarding
nucleation.
Numerous
examples
direct
visualization
molecules
using
fluorescently
labeled
inhibitors
illustrate
this
point.
Besides,
controversy
about
inhibitors,
provided
different
screening
methods,
discussed.
In
context,
necessity
elaborating
uniform
protocol
for
obligatory
test
conditions
emphasized.
