Water,
Journal Year:
2025,
Volume and Issue:
17(4), P. 574 - 574
Published: Feb. 17, 2025
Wastewater
treatment
plants
(WWTPs)
play
a
crucial
role
in
mitigating
microplastic
(MP)
release
to
the
environment.
In
this
paper,
WWTP
of
textile
manufacturing
plant
Guangdong,
China,
was
investigated
identify
MP
characteristics
and
effectiveness
wastewater
within
plant.
Laser
Direct
Infrared
(LDIR)
Liquid
Chromatography
with
Mass
Spectrometry
(LC-MS/MS)
were
applied
quantify
both
number
mass
microplastics
effluent
where
most
from
three
printing
dyeing
lines.
The
study
further
removal
efficiency
each
process
industry-owned
analysed
mechanism
step,
highlighting
limitations
detecting
eliminating
MPs.
It
is
observed
that
(1)
results
LDIR
LC-MS/MS
can
be
complementary
other;
(2)
concentration
influent
1730
n/L
by
13.52
µg/L
mass;
(3)
total
99%
MPs
67.7%
MPs;
(4)
nine
types
polymers
have
been
identified
influent,
which
Polyamide
(PA)
dominating;
(5)
hydrolysis
acidification
removed
PA
most;
(6)
aerobic
tank,
sand
filter,
biological
aerated
filter
(BAF)
showed
low
efficiency;
(7)
coagulation
sedimentation
tank
had
highest
PET
than
any
other
processes.
Water,
Journal Year:
2023,
Volume and Issue:
15(3), P. 493 - 493
Published: Jan. 26, 2023
In
this
work,
the
adsorption
mechanism
of
phenol
on
activated
carbon
from
aqueous
solutions
was
investigated.
Batch
experiments
were
performed
as
a
function
adsorbent
rate,
solution
temperature,
initial
concentration,
stirring
speed,
and
pH.
The
optimal
operating
condition
were:
mass/volume
ratio
0.6
g.L−1,
temperature
20
°C
speed
300
rpm.
equilibrium
data
for
analyzed
by
Langmuir,
Freundlich,
Temkin
isotherm
models.
It
found
that
Freundlich
models
fitted
well
process
is
favorable.
Langmuir
provides
maximum
156.26
mg.g−1
at
°C.
pseudo-first-order,
pseudo-second-order,
intraparticle
diffusion,
Boyd
used
to
fit
kinetic
data.
kinetics
described
pseudo-second-order
model.
controlled
external
diffusion
macropore
mesopore,
micropore
diffusion.
thermodynamic
study
revealed
exothermic
spontaneous
nature
with
increased
randomness
solid-solution
interface.
On
other
hand,
very
large
model
based
optimization
parameters
using
k-nearest
neighbor
coupled
gray
wolf
optimizer
algorithm
launched
predict
amount
adsorption.
KNN_GWO
showed
an
advantage
in
giving
more
precise
values
related
high
statistical
coefficients
(R
=
0.9999,
R2
0.9998
R2adj
0.9998)
low
errors
(RMSE
0,
0070,
MSE
0.2347
MAE
0.2763).
These
advantages
show
efficiency
performance
used.
Separation and Purification Technology,
Journal Year:
2023,
Volume and Issue:
331, P. 125582 - 125582
Published: Nov. 8, 2023
A
magnetic
activated
biochar-zeolite
composite
(MACZ)
was
produced
and
coated
with
polyethyleneglycol
(PEG)
polyethylenimine
(PEI)
to
produce
(PMACZ)
enhance
its
electrostatic
properties
for
the
adsorption
of
2
µm
15
microplastics.
Produced
adsorbents
were
characterized
scanning
electron
microscopy
energy
dispersive
spectroscopy
(SEM/EDS),
Brunauer-Emmett-Teller
(BET),
zeta
sizer,
vibrating
sample
magnetometer
(VSM),
X-ray
diffraction
(XRD)
thermogravimetric
analysis
(TGA).
Equilibrium
kinetic
laboratory
tests
conducted
evaluate
behaviour.
response
surface
(RSM)
on
a
central
design
effects
pH
temperature
adsorption.
Zeta
potential
results
showed
PEG/PEI
can
induce
positive
charges
adsorbents.
Adsorption
followed
pseudo-second-order
model
R2
99
%.
The
isotherm
studies
indicated
correlation
Temkin
maximum
98
capacity
736
mg/g
769
PMACZ
microplastic,
respectively.
Optimization
4
28
24
ANOVA
has
higher
impact
material
be
regenerated
minimum
cycles.
effect
ion
matrixes,
sea
salt,
tap
water
waste
effluent
MACZ
been
investigated.
