Biochar,
Journal Year:
2025,
Volume and Issue:
7(1)
Published: Jan. 17, 2025
Abstract
Per-
and
polyfluoroalkyl
substances
(PFASs),
commonly
known
as
‘‘forever
chemicals’’,
are
persistent
organic
pollutants
that
widely
distributed
in
the
environment.
Due
to
their
toxicity
resistance
degradation,
PFASs
classified
emerging
contaminants,
increasing
attention
is
being
paid
remediation.
Biochar,
an
environmentally
friendly
cost-effective
adsorbent,
shows
potential
for
remediating
contamination.
The
application
of
biochar
remediation
has
garnered
growing
interest.
Compared
other
adsorbents,
more
economical
raw
materials
its
preparation
readily
available.
However,
there
currently
no
comprehensive
review
summarizing
effects
on
environmental
behavior
PFASs.
This
aims
fill
gap
by
providing
in-depth
discussion
synthesis
existing
literature
this
area.
It
focuses
PFASs,
specifically
addressing
adsorption
mechanisms
factors
influencing
effectiveness
A
proposed
mechanism
which
photodegrades
through
generation
free
radicals,
addition
conventional
(such
pore
filling,
hydrogen
bonding,
hydrophobic
interactions,
electrostatic
interactions),
explored.
Furthermore,
discusses
ability
reduce
likelihood
entering
food
chain
water
soil
evaluates
feasibility
limitations
using
removal.
Finally,
we
identify
future
research
directions
support
safe
effective
use
remediation,
so
promote
advancement
green
technologies.
Graphic
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(31), P. 11357 - 11372
Published: July 26, 2023
Biochar,
a
carbon
(C)-rich
material
obtained
from
the
thermochemical
conversion
of
biomass
under
oxygen-limited
environments,
has
been
proposed
as
one
most
promising
materials
for
C
sequestration
and
climate
mitigation
in
soil.
The
contribution
biochar
hinges
not
only
on
its
fused
aromatic
structure
but
also
abiotic
biotic
reactions
with
soil
components
across
entire
life
cycle
environment.
For
instance,
minerals
microorganisms
can
deeply
participate
mineralization
or
complexation
labile
(soluble
easily
decomposable)
even
recalcitrant
fractions
biochar,
thereby
profoundly
affecting
cycling
Here
we
identify
five
key
issues
closely
related
to
application
review
outstanding
advances.
Specifically,
terms
use
pyrochar,
hydrochar,
stability
soil,
effect
flux
speciation
changes
emission
nitrogen-containing
greenhouse
gases
induced
by
production
application,
barriers
are
expounded.
By
elaborating
these
critical
issues,
discuss
challenges
knowledge
gaps
that
hinder
our
understanding
provide
outlooks
future
research
directions.
We
suggest
combining
mechanistic
biochar-to-soil
interactions
long-term
field
studies,
while
considering
influence
multiple
factors
processes,
is
essential
bridge
gaps.
Further,
standards
should
be
widely
implemented,
threshold
values
urgently
developed.
Also
needed
comprehensive
prospective
assessments
restricted
account
contributions
contamination
remediation,
quality
improvement,
vegetation
accurately
reflect
total
benefits
Water Research X,
Journal Year:
2023,
Volume and Issue:
18, P. 100167 - 100167
Published: Jan. 1, 2023
With
the
rapid
growth
yield
of
global
sewage
sludge,
rational
and
effective
treatment
disposal
methods
are
becoming
increasingly
needed.
Biochar
preparation
is
an
attractive
option
for
sludge
treatment,
excellent
physical
chemical
properties
derived
biochar
make
it
environmental
improvement.
Here,
current
application
state
was
comprehensively
reviewed,
advances
in
mechanism
capacity
water
contaminant
removal,
soil
remediation,
carbon
emission
reduction
were
described,
with
particular
attention
to
key
challenges
involved,
e.g.,
possible
risks
low
efficiency.
Several
new
strategies
overcoming
barriers
realize
highly
efficient
improvement
highlighted,
including
modification,
co-pyrolysis,
feedstock
selection
pretreatment.
The
insights
offered
this
review
will
facilitate
further
development
biochar,
towards
addressing
obstacles
its
crisis.
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.
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