Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
476, P. 134765 - 134765
Published: June 6, 2024
Photocatalytic
membrane
reactors
(PMRs)
are
a
promising
technology
for
micropollutant
removal.
Sunlight
utilization
and
catalyst
surface
sites
limit
photodegradation.
A
poly(vinylidene
fluoride)
(PVDF)
nanofiber
composite
(NCM)
with
immobilized
visible-light-responsive
g-C3N4/Bi2MoO6
(BMCN)
were
developed.
Photodegradation
of
steroid
hormones
the
PVDF-BMCN
NCM
was
investigated
varying
properties,
operating
conditions,
relevant
solution
chemistry
under
solar
irradiation.
Increasing
CN
ratio
(0-65%)
enhanced
estradiol
(E2)
degradation
from
20±10
to
75±7%
due
improved
sunlight
photon
lifetime.
PVDF
nanofibers
reduced
self-aggregation
catalysts.
Hydraulic
residence
time
light
intensity
With
increasing
pH
value,
E2
removal
decreased
84±4
67±7%
owing
electrical
repulsion
thus
adsorption
between
catalysts
E2.
96%
can
be
attained
at
environmentally
feed
concentration
(100
ng.L–1)
flux
60
L.m-2.h-1,
irradiance
100
mW.cm-2,
1
mg.cm-2
BMCN65
loading.
This
confirmed
that
heterojunction
photocatalysts
enhance
micropollutants
in
PMRs.
Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: July 19, 2023
Biochar
is
a
carbonaceous
by-product
of
lignocellulosic
biomass
developed
by
various
thermochemical
processes.
can
be
transformed
into
“nano-biochar”
size
reduction
to
nano-meters
level.
Nano-biochar
presents
remarkable
physico-chemical
behavior
in
comparison
macro-biochar
including;
higher
stability,
unique
nanostructure,
catalytic
ability,
larger
specific
surface
area,
porosity,
improved
functionality,
and
active
sites.
efficiently
regulates
the
transport
absorption
vital
micro-and
macro-nutrients,
addition
toxic
contaminants
(heavy
metals,
pesticides,
antibiotics).
However
an
extensive
understanding
recent
nano-biochar
studies
essential
for
large
scale
implementations,
including
development,
properties
targeted
use.
toxicity
on
different
organisms
its
in-direct
effect
humans
important
issue
concern
needs
extensively
evaluated
applications.
This
review
provides
detailed
insight
nanobiochar
research
(1)
development
methodologies,
(2)
compositions
properties,
(3)
characterization
methods,
(4)
potentiality
as
emerging
sorbent,
photocatalyst,
enzyme
carrier
environmental
application,
(5)
concerns.
