Journal of Hazardous Materials,
Год журнала:
2020,
Номер
400, С. 123144 - 123144
Опубликована: Июнь 12, 2020
The
total
and
available
(water
extracted)
content
of
selected
metal
were
determined
in
co-pyrolyzed
SSL
with
willow
(8:2,
6:2
w/w)
at
500,
600,
700
°C
using
two
different
carrier
gases
(N2
or
CO2).
study
investigated
the
relationship
bioavailability
to
toxicity
biochars
towards
bacteria
(Vibrio
fischeri),
plants
(Lepidium
sativum),
arthropods
(Folsomia
candida).
For
biochar
produced
a
ratio
6:4
(SSL:willow),
most
metals
significant
decrease
(P
≤
0.05)
from
5.9%
28.9%.
Co-pyrolysis
decreased
water
extractable
concentrations
(Ba,
Cd,
Cu,
Fe,
Mn,
Ni,
Zn)
8.0%
100%.
CO2
resulted
6
200
%
increase
relative
pyrolyzed
N2.
An
pyrolysis
temperature
caused
higher
concentration
biochars.
9
100
%.
adverse
effect
these
on
living
organisms
was
reduced
due
stronger
binding
(especially
Cu
Cd)
matrix.
negative
impact
Cr,
also
confirmed
by
principal
component
analysis
(PCA).
Journal of Hazardous Materials,
Год журнала:
2023,
Номер
452, С. 131212 - 131212
Опубликована: Март 15, 2023
Per-
and
polyfluoroalkyl
substances
(PFAS)
are
persistent
organic
chemicals
detected
in
biosolids
worldwide,
which
have
become
a
significant
concern
for
applications
due
to
their
increasing
environmental
risks.
Hence,
it
is
pivotal
understand
the
magnitude
of
PFAS
contamination
implement
effective
technologies
reduce
prevent
hazardous
aftermaths.
Thermal
techniques
such
as
pyrolysis,
incineration
gasification,
biodegradation
been
regarded
impactful
solutions
degrade
transform
into
value-added
products
like
biochar.
These
can
mineralize
compounds
under
specific
operating
parameters,
lead
unique
degradation
mechanisms
pathways.
Understanding
pave
way
design
technology
optimize
process
conditions.
Therefore,
this
review,
we
aim
review
compare
thermal
treatment
incineration,
smouldering
combustion,
hydrothermal
liquefaction
(HTL),
biodegradation.
For
instance,
perfluorooctane
sulfonic
acid
(PFOS),
firstly
C-S
bond
cleavage
occurs
followed
by
hydroxylation,
decarboxylation
defluorination
reactions
form
perfluoroheptanoic
acid.
In
HTL,
PFOS
carried
through
OH-catalyzed
series
nucleophilic
substitution
reactions.
contrast,
involves
three-step
random-chain
scission
pathway.
The
first
step
includes
cleavage,
perfluoroalkyl
radical,
radical
chain
propagation
Finally,
termination
produces
very
short-fluorinated
units.
We
also
highlighted
important
policies
strategies
employed
worldwide
curb
biosolids.
Materials,
Год журнала:
2020,
Номер
13(2), С. 261 - 261
Опубликована: Янв. 7, 2020
Biochar
is
the
solid
residue
that
recovered
after
thermal
cracking
of
biomasses
in
an
oxygen-free
atmosphere.
has
been
used
for
many
years
as
a
soil
amendment
and
general
applications.
Nonetheless,
biochar
far
more
than
mere
amendment.
In
this
review,
we
report
all
non-soil
applications
including
environmental
remediation,
energy
storage,
composites,
catalyst
production.
We
provide
overview
recent
uses
material
science,
thus
presenting
cheap
waste-derived
high
value-added
carbonaceous
source.
