Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(4), P. 113191 - 113191
Published: May 29, 2024
Peroxymonosulfate
(HSO5−,
PMS)
is
a
well-known
oxidant
for
water
treatment.
It
needs
to
be
activated
form
strong
oxidizing
agents
of
organic
pollutants
like
sulfate
radical
(SO4●−),
hydroxyl
(●OH),
superoxide
ion
(O2•−),
and
the
non-radical
singlet
oxygen
(1O2).
Recently,
removal
synthetic
dyes
from
waters
by
PMS
upon
homogeneous
heterogeneous
catalysts
has
received
great
research
attention
due
their
high
effectiveness
oxidation
rate
determined
simple
treatments
centered
at
bench
scale
in
laboratory.
The
present
review
summarizes
analyzes
recent
trends
this
topic
over
period
2020-2023.
Homogeneous
with
transition
metal
ions
iron
Cu2+,
single
or
mixed
metals
such
as
Co,
Cu,
Fe,
Mn,
MOFs,
carbonaceous
other
materials,
have
been
examined.
action
these
detailed
generation
activation.
Selected
examples
describe
discoloration
contaminated
influence
operating
variables
on
process
performance.
production
oxidants
via
mechanisms
reduction
confirmed
specific
scavengers
EPR
analysis.
In
some
cases,
effect
aqueous
matrix
dye
analyzed
detection
its
by-products
described
proposal
pathways
degradation/mineralization
better
know
process.
A
final
section
proposes
future
development
remediation
catalytic
activators
PMS.
Royal Society Open Science,
Journal Year:
2024,
Volume and Issue:
11(5)
Published: May 1, 2024
Synthetic
organic
dyes,
which
are
resistant
to
biodegradation,
pose
a
notable
health
risk,
potentially
leading
cancer
and
respiratory
infections.
Researchers
have
addressed
this
concern
by
exploring
physicochemical
methods
remove
dyes
from
wastewater.
A
particularly
promising
solution
involves
modified
biochar
adsorbents,
demonstrate
high
efficiency
in
dye
removal.
Biochar,
charcoal-like
material
derived
biomass
pyrolysis,
offers
advantages
such
as
low
cost,
eco-friendliness,
reusability.
Beyond
its
role
sustainable
soil
remediation,
proves
effective
removing
wastewater
after
undergoing
physical
or
chemical
modification.
Acid–base
activation
metal–heteroatom
impregnation
enhances
biochar's
adsorption
capacity.
This
comprehensive
review
examines
the
attributes
of
biochar,
common
for
production
modification,
impacts
raw
materials,
pyrolysis
temperature,
heating
rate
residence
time.
It
further
elucidates
mechanism
removal
assessing
factors
influencing
efficiency,
including
feedstock,
pH,
particle
size,
initial
concentration,
dosage
reaction
explores
challenges,
opportunities,
reusability
regeneration
treating
also
discusses
recent
advances
using
adsorption-based
biochar.
The
ultimately
advocates
enhancing
performance
through
post-modification.
