Sustainability,
Год журнала:
2022,
Номер
14(3), С. 1203 - 1203
Опубликована: Янв. 21, 2022
The
necessity
of
energy
is
continuously
increasing,
whereas
fossil
fuel
sources
are
gradually
depleting.
To
mitigate
this
problem,
fish
processing
waste
the
bluespotted
stingray
(Neotrygon
kuhlii),
available
in
Borneo
region,
was
investigated
for
an
alternative
feedstock
bioenergy
production.
wastes
hazardous
environment,
biodiesel
from
pollution-free
and
produces
less
contaminant
gas
carbon
dioxide
than
fuel.
From
proximate
analysis,
moisture
content,
volatile
matter,
fixed
carbon,
ash
content
were
achieved
as
4.88%,
63.80%,
15.03%,
16.29%,
respectively.
proportion
hydrogen,
nitrogen,
sulfur,
oxygen
found
42.06%,
5.99%,
10.77%,
0.91%,
40.27%,
respectively,
ultimate
analysis.
calorific
value
21.53
MJ/kg,
which
would
be
highly
effective
biofuel
morphology
analysis
results
biomass
favorable
renewable
sources.
major
bondage
between
hydrogen
using
Fourier
transform
infrared
spectroscopy.
thermogravimetric
derivative
thermogravimetry
revealed
that
highest
weight
loss
occurred
at
352
°C
temperature
with
a
decomposition
rate
4.57
wt.%/min
pyrolysis
circumstances,
606
3.77
combustion
conditions.
In
process
25
°C/min
heating
rate,
yield
biochar,
bio-oil,
bio-syngas
33.96,
29.34,
23.46%
400
°C,
47.72,
49.32,
33.87%
500
18.32,
21.34,
42.37%
600
characteristics
yields
suitable
being
source.
Abstract
The
textural
properties
and
surface
chemistry
of
phosphoric
acid-modified
biochars
(PABCs)
prepared
at
different
pyrolysis
temperatures
(500–700
°C)
were
studied
based
on
the
results
obtained
from
XRD,
SEM,
BET,
FT-IR,
Raman,
XPS
elements
analyses.
PABCs
higher
tended
to
possess
a
bigger
proportion
microporous
structure.
adsorption
capacity
initial
rate
for
sulfadiazine
(SDZ)
notably
improved
139.2
mg/g
9.66
mg/(g
min)
as
calculated
Langmuir
model.
equilibrium
time
was
only
one
quarter
that
without
modification.
H
3
PO
4
modification
advantageous
produce
phosphate
break
functional
groups
form
disordered
carbon
structure
abundant
micropores.
enhancement
in
SDZ
due
confinement
effect
hydrophobic
cavities
mircoporous
π–π
electron–donor–acceptor
interaction.
Specially,
exhibited
stable
capacities
wide
pH
range
(3.0–9.0)
or
relatively
high
concentrations
coexisting
ions.
Heliyon,
Год журнала:
2024,
Номер
10(4), С. e25785 - e25785
Опубликована: Фев. 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.
Biochar,
Год журнала:
2020,
Номер
2(4), С. 439 - 453
Опубликована: Окт. 30, 2020
Abstract
Considering
the
global
issue
of
vegetable
wastes
generation
and
its
impact
on
environment
resources,
this
study
evaluated
conversion
four
largely
produced
(cauliflower,
cabbage,
banana
peels
corn
cob
residues)
into
biochar.
Each
waste
was
tested
individually
as
a
combined
blend
to
assess
feedstock
influences
biochar
properties.
In
addition,
various
pyrolysis
temperatures
ranging
from
300
°C
600
two
particle
size
fractions
(less
than
75
µm,
75–125
µm)
were
considered.
Biochars
characterized
for
properties
that
can
influence
biochars’
effectiveness
soil
amendment.
It
found
temperature
most
dominant
factor
properties,
but
individual
feedstocks
biochars
with
different
characteristics.
The
had
characteristics
varied
follows:
pH
7.2–11.6,
ECE
0.15–1.00
mS
cm
−1
,
CEC
17–cmol
c
kg
ζ-potential
−
0.24
43
mV.
Based
optimal
values
these
parameters
literature,
cauliflower
determined
be
best
feedstocks,
though
mixed
also
good
optimum
around
400
°C,
differed
slightly
(300–500
°C)
depending
distinct
feedstock.
However,
smaller
application
always
optimal.
Biochar
yields
in
range
20–30%
at
range,
except
cobs
which
higher.
This
demonstrates
dried
is
suitable
valorization
approach
produce
agricultural
Sustainability,
Год журнала:
2022,
Номер
14(7), С. 3829 - 3829
Опубликована: Март 24, 2022
This
study
investigated
the
characteristics
of
biochars
derived
from
pyrolysis
rubberwood
sawdust
(RWS)
and
sewage
sludge
(SS)
their
co-pyrolysis
at
mixing
ratios
50:50
75:25.
Biochars
were
produced
550
°C
through
slow
in
a
moving
bed
reactor
then
characterized.
Results
showed
that
biochar
(RWSB)
had
high
carbon
content
(86.70
wt%)
low
oxygen
(7.89
wt%).
By
contrast,
(SSB)
ash
(65.61
(24.27
The
blending
RWS
with
SS
mentioned
helped
enhance
gross
element
contents
samples.
elemental
analysis
was
also
reported
form
atomic
(H/C
O/C).
functional
groups
observed
by
Fourier-transform
infrared
spectroscopy
(FTIR).
X-ray
fluorescence
(XRF)
revealed
contained
inorganic
elements,
such
as
Si,
Ca,
Fe,
K,
Mg,
P,
Zn.
pH
ranged
8.41
to
10.02.
Brunauer,
Emmett,
Teller
(BET)
scanning
electron
microscopy
(SEM)
RWSB
lower
surface
area
larger
pore
diameter
than
other
biochars.
water
holding
capacity
(WHC)
releasing
ability
(WRA)
range
1.01–3.08
mL/g
1.19–52.42
wt%,
respectively.
These
results
will
be
guideline
for
further
application
RWS,
SS,
blended
Sustainability,
Год журнала:
2023,
Номер
15(11), С. 8815 - 8815
Опубликована: Май 30, 2023
The
demand
for
energy
has
increased
tremendously
around
the
whole
world
due
to
rapid
urbanization
and
booming
industrialization.
Energy
is
major
key
achieving
an
improved
social
life,
but
production
utilization
processes
are
main
contributors
environmental
pollution
greenhouse
gas
emissions.
Mitigation
of
crisis
reduction
in
(water
air)
difficulties
leading
research
topics
nowadays.
Carbonaceous
materials
offer
some
best
solutions
minimize
these
problems
easy
effective
way.
It
also
advantageous
that
sources
carbon-based
economical,
synthesis
comfortable,
applications
environmentally
friendly.
Among
carbonaceous
materials,
activated
carbons,
graphene,
carbon
nanotubes
have
shown
outstanding
performance
mitigating
pollution.
These
three
exhibit
unique
adsorption
properties
storage,
water
purification,
cleansing
their
electrical
conductivity,
large
specific
surface
areas,
strong
mechanical
strength.
This
paper
reviews
methods
nanotubes,
graphene
significant
treatment,
dioxide
capture
improve
sustainability.
ACS Sustainable Resource Management,
Год журнала:
2024,
Номер
1(2), С. 355 - 367
Опубликована: Фев. 13, 2024
The
escalating
contamination
of
water
bodies
by
synthetic
dyes
necessitates
innovative
and
ecoconscious
strategies
for
wastewater
treatment.
In
this
study,
activated
biochars
BC-800
(1:0.25),
(1:0.5),
(1:1)
from
wheat
straw
were
synthesized.
Here,
ratios
denote
the
mass
relationship
between
potassium
hydroxide;
"800"
represents
pyrolysis
temperature.
These
rigorously
characterized
revealing
most
efficient
material,
(1:1),
presenting
a
surface
area
2578.82
m2/g
average
pore
diameter
5.51
nm.
Across
parallel
batch
experiments,
it
effectively
extracted
(rhodamine
B
(RhB),
methylene
blue
(MB),
methyl
orange
(MO))
within
15–20
min,
primarily
through
chemisorption
pathways.
Increased
porosity
resulted
in
greater
dispersion
adsorption
sites
including
C═C
linkages
(π–π
interactions)
H-bonding
via
carbonyl
groups
(C═O).
To
understand
mechanism,
Langmuir,
Freundlich,
Temkin
isotherm
models
employed
to
investigate
equilibrium
behavior.
Results
show
that
followed
Freundlich
(R2:
0.9659
RhB,
0.9927
MB,
0.9979
MO,
respectively),
showing
dye
molecules
form
multilayers
on
biochar
(π-stacking).
Biochar
recycling
chemical
regeneration
demonstrated
sustained
removal
efficiency
>90%
over
multiple
cycles.
