Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 28, 2023
Abstract
Anaerobic
digestion
(AD)
of
microbial
biomass
has
proven
to
be
a
significant
breakthrough
technique
in
producing
biogas
rich
methane.
The
quantity
produced
by
anaerobic
processes
varies
significantly
based
on
the
nature
and
characteristics
substrates
used.
Although
various
have
been
studied
produce
biomethane
methods,
studies
using
micronutrients
for
enhancing
production
are
less
explored.
This
research
work
focusses
use
trace
metals
such
as
Fe,
Cu,
Zn,
Mn,
Mg,
Ni
proper
proportions
enhance
consortium
thus
aiding
methane
desired
quality.
Initial
parameter
analysis
samples
was
done
specific
dosages
supplied
reactor.
effect
these
process
observed
analysing
yield,
pH,
alkalinity,
total
solids,
volatile
solids
samples.
Studies
were
daily
basis
triplicate
arrive
at
concordant
results.
Once
minimum
dosage
formulated
nutrient
supplementation
varying
improving
potential
Food
waste
from
college
canteen
used
substrate
cow
dung
an
inoculum
providing
catalytic
An
energy
balanced
reactor
set
up
developed
micronutrients.
Further
showed
drastic
decrease
Volatile
Fatty
Acids
(VFA)
accumulation
with
increase
retention
period
which
proves
stability
system
long
run.
results
obtained
this
study
shows
effective
method
conversion
time
achieving
sustainable
development
goals
treating
waste.
Urban Science,
Journal Year:
2024,
Volume and Issue:
8(3), P. 121 - 121
Published: Aug. 22, 2024
Energy
is
a
crucial
factor
for
urban
development.
Cities
have
role
in
climate
change,
as
they
use
2/3
of
the
world’s
energy,
producing
70%
greenhouse
gas
(GHG)
emissions.
In
order
to
reduce
large
ecological
footprint
utilization
conversional
energy
sources
(coal,
gas,
and
oil)
enhance
nation’s
independence
(security),
it
find
alternative
fuels.
Biomass
residues
are
characterized
sustainable
carbon-neutral
source.
Hence,
this
review
describes
critical
assessment
not
only
quality
characteristics
several
waste
biomass
bioenergy
production
biofuels
but
also
value-added
products
that
could
be
produced
from
wastes
industry
(e.g.,
pharmaceutical,
cosmetics,
packaging
industry,
etc.).
Furthermore,
challenges
potential
solutions
transformation
sustainability
explored.
Despite
high-quality
availability
these
wastes,
factors
should
taken
into
account.
contribute
development
goals
(SDG),
such
cities
communities,
clean
responsible
consumption
production,
economic
growth
country,
and,
result,
Energies,
Journal Year:
2023,
Volume and Issue:
16(5), P. 2116 - 2116
Published: Feb. 22, 2023
In
this
paper,
the
latest
research
in
field
of
anaerobic
co-digestion
related
to
advantages
using
different
mixtures
substrates
on
performance
process
and
increasing
its
efficiency
is
reviewed.
The
main
aspects
presented
review
refer
study
most
commonly
used
types
substrates,
highlighting
their
characteristics,
diversity
microbial
communities
involved
production
biogas,
applied
pretreatments,
possibility
obtaining
an
improved
digestate
as
a
secondary
product.
are
food
waste,
sewage
sludge,
animal
manure,
lignocellulosic
biomass,
algae,
fats,
oils,
greases.
data
from
studied
works
demonstrated
that
improves
carbon/nitrogen
ratio
nutrient
balance,
increases
stability,
diminishes
concentration
toxic
inhibitors.
At
same
time,
use
appropriate
leads
increase
communities,
among
which
synergistic
relationships
established
ultimately
favor
growth
methanogenic
potential.
Finally,
based
results
found,
one
trends
need
adapt
technology
type
substrate
industry.
Heliyon,
Journal Year:
2025,
Volume and Issue:
11(4), P. e42395 - e42395
Published: Feb. 1, 2025
Anaerobic
digestion
(AD)
plants
have
been
facing
significant
challenges
in
maintaining
a
stable
long-time
operation
when
utilizing
whey
permeate
as
feedstock.
In
this
study,
we
investigated
the
AD
performance
of
under
batch
and
semi-continuous
stirred
tank
reactor
(s-CSTR)
systems
to
optimize
process.
Biochemical
methane
potential
(BMP)
tests
were
initially
performed
reactors
assess
substrate
operating
at
different
inoculum
ratios
(ISRs)
pH
values
mesophilic
temperatures.
The
kinetic
parameters
from
best
system
assessed
be
used
guideline
for
s-CSTR
operational
set
ups.
highest
yield
653.64
±
12.16
NLCH4kgVS
-1
was
observed
ISR
2,
initial
7.5
37
°C
incubation
system.
However,
condition
applied
determine
organic
loading
rate
(OLR)
hydraulic
retention
times
(HRT)
s-CSTRs,
resulted
failure.
s-CSTRs
then
operated
OLR
2.5
4
gVSL-1d-1
with
30
d
HRT
150
effect
feeding
regimes
towards
overall
performance.
CH4
production
declined
3
HRTs
all
before
stabilizing
rest
experiment.
decline
correlated
volatile
solids
degradation,
fatty
acids
microbial
composition.
Initially,
acetogenic
bacteria
(e.g.,
Trichococcus
Sedimentibacter)
dominated
digestate
which
shifted
propionic
acid
producing
Actinomyces
Acidipropionibacterium)
over
course
d.
A
change
archaeal
abundance
also
where
abundant
Methanosarcina
finally
substituted
by
Methanobacterium.
population
our
suggests
shift
methanogenesis
pathway,
directly
affects
Energies,
Journal Year:
2025,
Volume and Issue:
18(6), P. 1425 - 1425
Published: March 13, 2025
Sewage
sludge
was
treated
with
nanoscale
zero-valent
iron
(nZVI)
to
enhance
biogas
and
methane
(CH4)
production,
the
influence
of
key
parameters
on
material’s
anaerobic
digestion
(AD)
efficiency
analyzed
using
sigmoidal
mathematical
models.
In
this
study,
three
dosages
nZVI
(0.5%,
1.5%
3%)
were
added
system
accelerate
decomposition
process.
The
results
showed
that
cumulative
yield
after
41
days
increased
by
23.9%
in
reactor
a
dosage
1.5%.
Correspondingly,
highest
CH4
production
enhancement
21.5%
achieved
compared
control.
indicated
optimal
for
AD
system,
as
it
governed
yields
maximum
removal
total
volatile
solids.
Additionally,
predict
evaluate
kinetic
parameters,
eight
models
applied.
According
modified
Gompertz,
Richards
logistic
models,
shortened
lag
phase
from
11
5
Schnute
model
provided
best
fit
experimental
data
due
coefficients
determination
(R2:
0.9997–0.9999
at
3%
dosages),
well
lowest
Akaike’s
Information
Criterion
values
errors.
This
demonstrated
its
superior
performance
other
Food Science & Nutrition,
Journal Year:
2024,
Volume and Issue:
12(10), P. 8364 - 8376
Published: Sept. 2, 2024
Abstract
In
the
present
work,
cellulose
microfibers
(CMFs)
isolated
from
fallen
autumn
leaves
of
cherry
plum
(
Prunus
cerasifera
pissardii
nigra
),
white
mulberry
Morus
alba)
and
plane
Platanus
orientalis
)
trees
were
characterized
used
as
reinforcement
agents
in
sodium
alginate‐based
biodegradable
films.
Fourier
transform
infrared
spectroscopy
(FT‐IR)
characterization
showed
that
CMFs
successfully
with
high
purity.
The
extracted
had
a
particle
size
ranging
321.20
nm
to
632.26
negative
zeta
potential
values
(−27.33
−21.40).
extraction
yield
ranged
19.53%
26.00%.
Incorporation
leaf‐derived
into
alginate
based
films
(1%,
w:w)
increased
their
tensile
strength
(from
153.73
187.78
MPa)
elongation
at
break
105.97%
89.90%)
significantly
decreased
oxygen
121.46
75.56
meq
kg
‐1
water
vapor
permeabilities
2.36
1.60
g
mm
h
−1
m
−2
kPa
)(
p
<
0.05).
Furthermore,
supplementation
biopolymer
matrix
no
significant
effect
on
color
L*:
85.35–85.67;
a*:
−0.75‐0.71;
b*
:
4.23–4.94)
moisture
content
(44.64–48.42%)
film
samples,
although
thickness
(40.33–94.66
μm).
Scanning
electron
microscopy
(SEM)
images
homogeneously
dispersed
matrix.
Overall,
this
study
confirms
plum,
mulberry,
are
valuable
sources
which
could
be
manufacturing
nanocomposite
agents.
