Carboxymethyl cellulose sodium/bentonite composite adsorbent for Cd(II) adsorption from wastewater
Advanced Composites and Hybrid Materials,
Год журнала:
2025,
Номер
8(1)
Опубликована: Янв. 11, 2025
Severely
polluting
wastewater
containing
heavy
metal
ions
has
become
a
pressing
issue.
To
address
the
current
shortcomings
of
natural
bentonite
(Bent)
and
carboxymethyl
cellulose
sodium
(CMC)
for
Cd(II)
adsorption,
this
study
developed
cellulose/bentonite
composite
adsorbent
(CMCMW-Bent)
via
microwave-assisted
synthesis
using
acrylic
acid
(AA)-modified
CMC
pretreated
(Bent),
was
used
to
remove
from
wastewater.
The
results
show
that
strong
interaction
between
AA
CMC,
which
successfully
entered
layer,
provided
excellent
structural
stability
abundant
adsorption
sites
process.
Meanwhile,
heating
enhanced
unique
structure
compared
traditional
with
aqueous
solution.
best
effect
occurred
at
pH
=
6–7,
maximum
capacity
44.76
mg/g
Cd(II).
isothermal
kinetic
models
demonstrate
process
followed
Langmuir
fitting
pseudo-second-order
equations.
thermodynamic
confirms
spontaneous
endothermic
chemical
This
provides
new
approach
obtaining
efficient
adsorbents.
Язык: Английский
A Novel Cellulose-Based Composite Hydrogel Microsphere Material: for Efficient Adsorption of Co(II) and Ni(II) Ions in Water
Jingru Zhao,
Zifei Wei,
Linan Sun
и другие.
Journal of Inorganic and Organometallic Polymers and Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 19, 2024
Язык: Английский
Removal of the nalidixic acid antibiotic from aqueous solutions using bovine serum albumin nanoparticles
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Окт. 15, 2024
The
presence
of
antibiotic
pollutants
in
water
and
wastewater
can
cause
significant
risks
to
the
environment
different
aspects.
Therefore,
antibiotics
need
be
removed
from
water.
This
study
investigates
adsorption
nalidixic
acid
(NA),
a
common
antibiotic,
using
bovine
serum
albumin
nanoparticles
(BSA
NPs).
These
NPs
were
synthesized
via
desolvation
technique
characterized
SEM,
DLS,
FT-IR,
UV-Vis
spectroscopy.
effects
adsorbent
dosage
(0.02-0.9
mg),
initial
NA
concentration
(30-80
mg
L
Язык: Английский
Phytofiltration of Rhodamine-B dye using microwave-assisted tartaric acid-treated Trapa natans peels from waste water by biosorption
Clean Technologies and Environmental Policy,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 11, 2024
Язык: Английский
Investigation of the iridium adsorption process with functionalized magnetic nanoparticles using triisobutylphosphine sulfide extractors
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Окт. 28, 2024
In
this
research
work,
the
adsorption
process
of
iridium
using
magnetic
nanoparticles
functionalized
with
Cyanex
471X
has
been
investigated.
regard,
parameters
affecting
such
as
pH,
initial
concentration
ions,
contact
time
and
adsorbent
dosage
were
assessed.
According
to
results,
pH
6,
1.2
g/L,
10
mg/L,
min
selected
optimal
conditions
for
by
synthesized
nanosorbent.
The
kinetics
was
studied,
it
found
that
reaction
follows
pseudo-second-order
kinetic
model
correlation
coefficient
0.9960.
Also,
experimental
studies
indicated
Langmuir
isotherm
best
matches
data
(R2
=
0.9961).
maximum
capacity
nanosorbent
estimated
be
35.34
mg/g
isotherm.
With
thermodynamic
analysis
process,
is
endothermic
spontaneous.
addition,
in
investigation
desorption,
HCl/HNO3
solution
a
1.5
M
suitable
eluent.
Язык: Английский
Fabrication of tannic acid-incorporated polyvinylpyrrolidone/polyvinyl alcohol composite hydrogel and its application as an adsorbent for copper ion removal
Parichart Chunhakowit,
Yada Phabjanda,
Atchara Aunwisat
и другие.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 16, 2024
Abstract
An
effective
tannic
acid-incorporated
polyvinylpyrrolidone/polyvinyl
alcohol
composite
hydrogel
with
high-potential
sorption
capacity
was
developed
for
the
removal
of
copper
from
aqueous
solution.
The
exhibited
pH-dependent
swelling,
in
which
swelling
and
shrinking
occurred
reversibly
adjustment
pH
medium.
At
4,
maximal
adsorption
at
30
°C
297.0
mg
g
-1
,
adsorbent
dose
4
L
.
kinetics
were
best
fitted
a
pseudo-second
order
kinetic
model.
behavior
well
predicted
by
Freundlish
isotherm.
thermodynamics
parameters
indicated
spontaneous
exothermic
reaction
an
increase
entropy
system.
chemical
changes
film
structure
before
after
treatment
characterized
Scanning
electron
microscopy
(SEM),
Fourier
transform
infrared
(FTIR)
spectroscopy,
X-ray
photoelectron
spectroscopy
(XPS),
absorption
(XAS).
FTIR,
XPS
XAS
results
confirmed
that
Cu
bound
to
oxygens
-OH,
C
=
O
N-(C
O)-
functional
groups
on
T-HD.
analysis
revealed
composition
molecular
geometry
adsorbed
ions.
single-solute
coadsorption
mechanisms,
provide
insight
into
cobalt-copper,
nickel-copper,
or
nickel-cobalt-copper
complex
solutions,
investigated.
excellent
regeneration
ability
EDTA
Notably,
retained
efficiency
exceeding
87%
even
five
cycles.
On
basis
both
characteristics
performance,
it
determined
has
potential
be
used
as
platform
developing
materials
treat
wastewater
containing
high
levels
metal
contaminants
such
those
electroplating
industry.
Язык: Английский
Craterellus cornucopioides Biyosorbanı ile Sulu Çözeltilerden Kongo Kırmızısı’nın Biyosorpsiyonu: Kinetik, İzotermal ve Termodinamik Çalışmalar
Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi,
Год журнала:
2024,
Номер
unknown, С. 325 - 334
Опубликована: Сен. 22, 2024
Bu
çalışmada
yenilebilir
bir
mantar
türü
olan
Craterellus
cornucopioides
biyokütlesinin
sulu
çözeltilerden
Kongo
kırmızısının
biyosorpsiyonunda
biyosorbent
olarak
kullanımı
araştırılmıştır.
Biyosorbentin
karakterizasyonu
gerçekleştirildikten
sonra
biyosorpsiyon
koşulları
optimize
edilmiştir.
Elde
edilen
verilere
göre
0,01
g
miktarı
kullanılarak
pH:
6,0’da
25
⁰C
ortam
sıcaklığında
2
saatlik
biyosorpsiyonun
ardından
kapasitesi
(qe)
150
mg/L
başlangıç
kırmızısı
derişimi
için
46,22±2,14
mg/g
bulunmuştur.
Biyosorpsiyonun
doğasının
aydınlatılabilmesi
izotermleri,
kinetiği
ve
termodinamiği
deneysel
sonuçların
kullanılmasıyla
hesaplanan
fizikokimyasal
parametrelere
göre,
prosesinin
Freundlich
izoterm
modeline
yalancı-ikinci
derece
kinetik
modele
uygun
olduğu
görülmüştür.
Proses
ekzotermik
karakterde
kendiliğinden
oluşmaktadır.
Son
biyosorpsiyon-desorpsiyon
çalışmaları
gerçekleştirilmiş
kullanılan
biyosorbentin
etkin
şekilde
tekrar
kullanılabileceği
gösterilmiştir.
Hazırlanan
boyar
madde
gideriminde
ucuz,
verimli
olacağı
düşünülmektedir.