Heliyon,
Journal Year:
2024,
Volume and Issue:
10(4), P. e25785 - e25785
Published: Feb. 1, 2024
Biochar
usage
for
removing
heavy
metals
from
aqueous
environments
has
emerged
as
a
promising
research
area
with
significant
environmental
and
economic
benefits.
Using
the
PICO
approach,
question
aimed
to
explore
using
biochar
remove
media.
We
merged
data
Scopus
Web
of
Science
Core
Collection
databases
acquire
comprehensive
perspective
subject.
The
PRISMA
guidelines
were
applied
establish
search
parameters,
identify
appropriate
articles,
collect
bibliographic
information
publications
between
2010
2022.
bibliometric
analysis
showed
that
biochar-based
metal
remediation
is
field
increasing
scholarly
attention.
removal
Cr(VI),
Pb(II),
Cd(II),
Cu(II)
was
most
studied
among
metals.
identified
five
main
clusters
centered
on
adsorption,
water
treatment,
adsorption
models,
analytical
techniques,
hydrothermal
carbonization
by
performing
keyword
co-occurrence
analysis.
Trending
topics
include
reusability,
modification,
acid
mine
drainage
(AMD),
wastewater
hydrochar.
reutilization
metal-loaded
spent
includes
transforming
it
into
electrodes
supercapacitors
or
stable
catalyst
materials.
This
study
provides
overview
in
aquatic
highlights
knowledge
gaps
future
directions.
Carbon Research,
Journal Year:
2022,
Volume and Issue:
1(1)
Published: June 18, 2022
Abstract
With
social
progress
and
industrial
development,
heavy
metal
pollution
in
water
soils
environment
is
becoming
more
serious.
Although
biochar
a
low-cost
environmentally
friendly
adsorbent
for
ions,
its
adsorption
immobilization
efficiency
still
need
to
be
improved.
As
an
upgraded
version
of
biochar,
modified
has
attracted
extensive
attention
the
scientific
community.
This
review
summarized
recent
research
on
treatment
methods
pollutants
using
biochar.
The
features
advantages
modification
techniques
such
as
physical
modification,
chemical
biological
other
categories
were
discussed.
mechanism
removing
metals
from
soil
by
was
summarized.
It
found
that
had
better
performance
after
which
provided
higher
surface
areas
functional
groups,
enough
binding
sites
combine
ions.
Biochar
very
promising
candidate
environment.
Furthermore,
some
high
valent
ions
could
reduced
low
metals,
Cr(VI)
reduction
Cr(III),
form
precipitates
in-situ
sorption-reduction-precipitation
strategy.
However,
it
direction
efforts
develop
high-efficiency
with
low-cost,
sorption
capacity,
photocatalytic
performance,
no
secondary
future.
Biochar,
Journal Year:
2022,
Volume and Issue:
4(1)
Published: July 26, 2022
Abstract
The
fast
increase
of
population
results
in
the
quick
development
industry
and
agriculture.
Large
amounts
contaminants
such
as
metal
ions
organic
are
released
into
natural
environment,
posing
a
risk
to
human
health
causing
environment
ecosystem
problems.
efficient
elimination
from
aqueous
solutions,
photocatalytic
degradation
pollutants
or
in-situ
solidification/immobilization
heavy
solid
phases
most
suitable
strategies
decontaminate
pollution.
Biochar
biochar-based
composites
have
attracted
multidisciplinary
interests
especially
environmental
pollution
management
because
their
porous
structures,
large
functional
groups,
high
adsorption
capacities
photocatalysis
performance.
In
this
review,
application
biochar
adsorbents
and/or
catalysts
for
different
contaminants,
adsorption-photodegradation
pollutants,
adsorption-(photo)reduction
summarized,
mechanism
was
discussed
advanced
spectroscopy
analysis
DFT
calculation
detail.
doping
oxides
is
main
strategy
narrow
band
gap,
generation
separation
photogenerated
e
−
-h
+
pairs,
produce
more
superoxide
radicals
(·O
2
)
hydroxyl
(·OH),
enhance
visible
light
absorption
performance,
which
dominate
(photo)reduction
valent
metals
low
metals.
environmentally
friendly
materials,
promising
candidates
cleanup.
challenge
perspective
provided
end.
Graphical
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
886, P. 163968 - 163968
Published: May 9, 2023
Biochar
can
be
an
effective
carrier
for
microbial
inoculants
because
of
its
favourable
properties
promoting
life.
In
this
review,
we
assess
the
effectiveness
biochar
as
a
agricultural
and
environmental
applications.
is
enriched
with
organic
carbon,
contains
nitrogen,
phosphorus,
potassium
nutrients,
has
high
porosity
moisture-holding
capacity.
The
large
number
active
hydroxyl,
carboxyl,
sulfonic
acid
group,
amino,
imino,
acylamino
hydroxyl
carboxyl
functional
groups
are
cell
adhesion
proliferation.
use
inoculum
been
shown
to
enhance
persistence,
survival
colonization
inoculated
microbes
in
soil
plant
roots,
which
play
crucial
role
biochemical
processes,
nutrient
carbon
cycling,
contamination
remediation.
Moreover,
biochar-based
including
probiotics
effectively
promote
growth
remediate
contaminated
pollutants.
These
findings
suggest
that
serve
promising
substitute
non-renewable
substrates,
such
peat,
formulate
deliver
inoculants.
future
research
directions
relation
improving
material
performance
expanding
potential
applications
emerging
immobilization
technology
have
proposed.
Biochar,
Journal Year:
2023,
Volume and Issue:
5(1)
Published: March 13, 2023
Abstract
Biochar
is
a
carbon-containing
material
prepared
through
thermal
treatment
of
biomass
in
limited
supply
oxygen,
and
used
for
an
array
applications
including
waste
management,
climate
change
mitigation,
soil
fertility
improvement,
bio-energy
production,
contaminant
remediation.
The
data
related
to
biochar,
its
the
wide
applicability
were
collected
using
Web
Science
Core
Collection
Database
(on
25/10/2022),
while
bibliometric
network
analysis
was
performed
VOSviewer
software
analyse
year-wise,
author-wise,
country-wise,
journal-wise
publication
trends,
construct
keyword
co-occurrence
maps,
identify
research
areas
receiving
greater
focus.
Further,
biochar
reviewed
mechanistic
insights
provided.
Some
findings
include:
>
50%
documents
(>
13,000)
getting
published
past
3
years,
90%
21,000)
being
articles,
~
publications
10,000)
environmental
sciences,
pyrolysis
most
widely
(~
40%
articles)
production
technique
(followed
by
carbonization,
gasification,
combustion,
torrefaction),
China
active
country
terms
11,000),
mostly
removing
contaminants
energy
mitigation).
Various
strengths,
weaknesses,
opportunities,
threats
(SWOT
analysis)
wide-ranging
identified.
Lastly,
gaps
identified
need
performing
elaborate
life
cycle
assessments,
exploring
machine
learning
artificial
intelligence
upgrading
conversion
technology
producing
application-specific
investigating
aspects
soil-biochar
interactions
nano-scale
transformation
biochar.
study
covers
broad
spectrum
lesser
attention,
which
could
guide
future
researchers
augmenting
research.
Graphical
Biochar,
Journal Year:
2023,
Volume and Issue:
5(1)
Published: July 20, 2023
Abstract
Biochar
and
biochar-based
materials
have
been
studied
extensively
in
multidisciplinary
areas
because
of
their
outstanding
physicochemical
properties.
In
this
review
article,
biochar
the
removal
environmental
pollutants,
hydrogen
generation
carbon
dioxide
capture
were
summarized
compared.
The
interaction
mechanisms
discussed
from
experimental
results
characterization
analysis.
high
porous
structures,
active
surface
sites,
(co)doping
single
metals/nonmetals,
incorporation
metal
oxides
or
other
improved
activity
applications.
However,
there
are
still
some
challenges
such
as:
(1)
fact
that
H
2
with
selectivity
produced
syngas
to
meet
real
application
requirement
industrial
is
main
challenge
production;
(2)
selective
CO
stability,
adsorption
capacity
recyclability
at
low-cost
should
be
considered
focused
on;
(3)
sorption-(photo)degradation
organic
chemicals;
(4)
sorption-reduction-extraction/solidification
metals/radionuclides
efficient
methods
for
elimination
pollutants.
end,
perspectives,
possible
techniques
materials’
future
described.
Graphical
Polymers,
Journal Year:
2022,
Volume and Issue:
14(14), P. 2911 - 2911
Published: July 17, 2022
This
review
provides
an
intensive
overview
of
flame
retardant
coating
systems.
The
occurrence
due
to
thermal
degradation
the
polymer
substrate
as
a
result
overheating
is
one
major
concerns.
Hence,
best
solution
this
problem
it
prevents
from
igniting
flame.
In
review,
descriptions
several
classifications
and
their
relation
flammability
were
discussed.
details
retardants
coatings
in
terms
principles,
types,
mechanisms,
properties
explained
well.
imparted
importance
intumescent
preventing
spread
via
formation
multicellular
charred
layer.
Thus,
intended
intumescence
can
reduce
risk
inherently
flammable
materials
used
maintain
high
standard
living.
