Materials Research Express,
Год журнала:
2024,
Номер
11(12), С. 125507 - 125507
Опубликована: Ноя. 28, 2024
Abstract
Composite
gel
spheres
(SA-BC)
were
prepared
by
using
sodium
alginate
(SA)
as
a
carrier
and
adding
peanut
shell
biochar,
their
preparation
conditions
optimized
to
evaluate
effectiveness
in
removing
the
ofloxacin
(OFX)
from
water.
In
addition,
antibiotic
contamination
Chinese
urban
waters
was
investigated.
The
results
showed
that
variety
of
pollution
existed
natural
water
bodies,
among
which
SA-BC
performed
excellently
OFX
water,
with
removal
rate
70.72%,
maintained
good
adsorption
performance
after
four
cycles
use.
experiments
demonstrated
general
applicability
practical
application
potential
dynamic
adsorption,
resistance
ionic
interference
heavy
metals
fitting
data
process
consistent
Langmuir
isothermal
model
pseudo-second-order
kinetic
model.
Further
analysis
three
main
mechanisms
SA-BC,
namely,
role
surface
functional
groups,
π
–
electron
donor–acceptor
(EDA)
interactions,
electrostatic
attraction.
Environmental Technology & Innovation,
Год журнала:
2024,
Номер
36, С. 103778 - 103778
Опубликована: Авг. 5, 2024
The
exogenous
addition
of
humic
acid
(HA)
is
often
seen
as
a
biostimulation
strategy
to
expedite
the
bioremediation
various
pharmaceutical
pollutants.
Nevertheless,
impact
HA
on
bioadsorption
ofloxacin
(OFL),
main
pathway
for
OFL
removal
in
activated
sludge,
remains
unknown.
In
this
study,
presence
10
mg/L
notably
decreased
theoretical
adsorption
capacity
from
8.94
7.95
mg/g.
inhibitory
effect
persisted
across
varying
pH
and
ionic
strengths
became
more
pronounced
with
increasing
concentration.
morphological
changes
biosolid
(BIO)
induced
by
indicated
that
was
bioadsorbed,
which
turn
competed
metal
binding
sites
like
Ca
Mg
BIO.
Further
analysis
OFL-HA
interaction
reveals
involvement
hydrogen
bonding
electrostatic
attraction.
study
also
demonstrates
bridging
role
between
BIO
through
consecutive
desorption
re-absorption
processes
HA.
To
quantify
direct
indirect
ratios,
new
approach
proposed,
determined
mass
ratios
(OFL:BIO)
(OFL:HA:BIO)
1:192
1:21:854,
respectively.
These
findings
suggest
bridge
could
not
compensate
adverse
effects
caused
reduction
sites.
Overall,
calls
reassessment
process
OFL.
Considering
widely
coexists
antibiotics
wastewater,
provides
valuable
insights
into
mechanisms
WWTPs.
