Reviews in Environmental Science and Bio/Technology,
Год журнала:
2024,
Номер
23(3), С. 699 - 737
Опубликована: Авг. 21, 2024
Abstract
Biogas
contains
significant
quantities
of
undesirable
and
toxic
compounds,
such
as
hydrogen
sulfide
(H
2
S),
posing
severe
concerns
when
used
in
energy
production-related
applications.
Therefore,
biogas
needs
to
be
upgraded
by
removing
H
S
increase
their
bioenergy
application
attractiveness
lower
negative
environmental
impacts.
Commercially
available
upgradation
processes
can
expensive
for
small
medium-scale
production
plants,
wastewater
treatment
facilities
via
anaerobic
digestion
process.
In
addition,
an
all-inclusive
review
detailing
a
comparison
biochar
hydrochar
removal
is
currently
unavailable.
the
current
study
aimed
critically
systematically
biochar/hydrochar
from
biogas.
To
achieve
this,
first
part
discussed
technologies
properties
vs.
hydrochar.
exisiting
adsorption
mechanisms,
namely
physical
adsorption,
reactive
chemisorption,
responsible
with
char
materials
were
discussed.
Also,
factors,
including
feedstock
type,
activation
strategies,
reaction
temperature,
moisture
content,
other
process
parameters
that
could
influence
behaviour
are
summarised.
Finally,
synergy
trade-offs
between
sectors
techno-economic
feasibility
using
presented.
Biochar’s
excellent
structural
coupled
alkaline
pH
high
metal
facilitate
physisorption
chemisorption
pathways
removal.
case
hydrochar,
occurs
mainly
which
attributed
well-preserved
surface
functional
groups.
Challenges
commercial
adsorbents
stream
highlighted
perspectives
future
research
provided.
Graphical
abstract
Biofuels,
Год журнала:
2023,
Номер
15(6), С. 677 - 687
Опубликована: Ноя. 10, 2023
This
research
aims
to
investigate
and
compare
the
properties
of
biochar
derived
from
low-density
polyethylene
(LDPE)
neem
leaves,
utilizing
both
batch
semi-batch
biomass
fuel-based
reactors
for
co-carbonization.
While
previous
studies
have
primarily
employed
electrical-powered
or
reactors,
this
study
introduces
innovative
approach
a
reactor,
marking
significant
advancement
in
production.
The
co-carbonization
process
lasted
∼2
h
batch-based
system
nearly
3
system.
achieved
higher
temperature
peaks
comparison
In
terms
yield,
generated
yield
30.35%,
while
yielded
17.3%.
Through
BET
analysis,
it
was
determined
that
produced
using
reactor
had
surface
area
227
m2/g
pore
diameter
2.116
nm.
Similarities
differences
functional
groups
among
samples
were
identified
through
FTIR
analysis.
By
EDX
spectroscopy,
observed
contained
seven
elements,
whereas
semi-batch-reacted
sample
similar
elements
but
lacked
nitrogen,
potassium,
magnesium.
exhibited
an
increased
carbon
content,
concentrations
other
decreased
when
compared
batch-reacted
sample.
can
be
applied
various
applications,
including
water
treatment,
energy
conversion,
storage.
findings
contribute
sustainable
waste
management
practices,
sequestration
efforts,
development
solutions
industries.
Indian Chemical Engineer,
Год журнала:
2024,
Номер
unknown, С. 1 - 14
Опубликована: Авг. 21, 2024
In
contemporary
waste
management,
the
escalating
volumes
of
bamboo
stalk
present
a
pressing
environmental
challenge,
necessitating
innovative
and
sustainable
solutions.
This
research
examined
properties
activated
carbon
monolith
(ACM)
derived
from
(BS)
using
facile
method.
Polystyrene
resin
KOH
were
employed
as
an
eco-binder
activator
in
synthesis,
respectively.
Analytical
methods
to
characterise
mechanical,
morphological,
elemental,
textual
profiles
obtained.
The
study's
results
indicated
creation
characterised
by
rough,
amorphous
shape
firmly
secured
binder.
It
revealed
BET
surface
area
measuring
265
m2/g
pore
diameter
2.8
nm.
displayed
various
irregular
void
pores,
forming
mesoporous
morphological
network,
along
with
sporadically
distributed
slivery-white
dot-like
particles
on
its
heterogeneous
surface.
EDX
analysis
also
BS-ACM
is
largely
composed
(77%),
potassium
(11%),
oxygen
(8%),
trace
amounts
aluminium,
gold,
iron,
plutonium.
compressive
strength
test
peak
force
21,536
N
before
any
significant
signs
appreciable
deformation
observed,
subsequent
estimation
Young's
modulus
at
8.34
MPa.
Beyond
advancing
valorisation,
aligns
circular
economy
principles
practices,
presenting
promising
pathway
for
developing
eco-friendly
materials
contributing
more
resource-efficient
future.
Reviews in Environmental Science and Bio/Technology,
Год журнала:
2024,
Номер
23(3), С. 699 - 737
Опубликована: Авг. 21, 2024
Abstract
Biogas
contains
significant
quantities
of
undesirable
and
toxic
compounds,
such
as
hydrogen
sulfide
(H
2
S),
posing
severe
concerns
when
used
in
energy
production-related
applications.
Therefore,
biogas
needs
to
be
upgraded
by
removing
H
S
increase
their
bioenergy
application
attractiveness
lower
negative
environmental
impacts.
Commercially
available
upgradation
processes
can
expensive
for
small
medium-scale
production
plants,
wastewater
treatment
facilities
via
anaerobic
digestion
process.
In
addition,
an
all-inclusive
review
detailing
a
comparison
biochar
hydrochar
removal
is
currently
unavailable.
the
current
study
aimed
critically
systematically
biochar/hydrochar
from
biogas.
To
achieve
this,
first
part
discussed
technologies
properties
vs.
hydrochar.
exisiting
adsorption
mechanisms,
namely
physical
adsorption,
reactive
chemisorption,
responsible
with
char
materials
were
discussed.
Also,
factors,
including
feedstock
type,
activation
strategies,
reaction
temperature,
moisture
content,
other
process
parameters
that
could
influence
behaviour
are
summarised.
Finally,
synergy
trade-offs
between
sectors
techno-economic
feasibility
using
presented.
Biochar’s
excellent
structural
coupled
alkaline
pH
high
metal
facilitate
physisorption
chemisorption
pathways
removal.
case
hydrochar,
occurs
mainly
which
attributed
well-preserved
surface
functional
groups.
Challenges
commercial
adsorbents
stream
highlighted
perspectives
future
research
provided.
Graphical
abstract
