Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
31(21), P. 30819 - 30835
Published: April 15, 2024
Manure
from
food-producing
animals,
rich
in
antibiotic-resistant
bacteria
and
antibiotic
resistance
genes
(ARGs),
poses
significant
environmental
healthcare
risks.
Despite
global
efforts,
most
manure
is
not
adequately
processed
before
use
on
fields,
escalating
the
spread
of
antimicrobial
resistance.
This
study
examined
how
different
cattle
treatments,
including
composting
storage,
affect
its
microbiome
resistome.
The
changes
occurring
resistome
treated
samples
were
compared
with
those
raw
by
high-throughput
qPCR
for
ARGs
tracking
sequencing
V3-V4
variable
region
16S
rRNA
gene
to
indicate
bacterial
community
composition.
We
identified
203
mobile
genetic
elements
(MGEs)
manure.
Post-treatment
reduced
these
76
composted
51
stored
samples.
Notably,
beta-lactam,
cross-resistance
macrolides,
lincosamides
streptogramin
B
(MLSB),
vancomycin
decreased,
while
linked
MGEs,
integrons,
sulfonamide
increased
after
composting.
Overall,
total
abundance
significantly
dropped
both
treatments.
During
composting,
relative
was
lower
midway
than
at
end.
Moreover,
higher
biodiversity
observed
storage.
Our
current
research
shows
that
storage
effectively
reduce
However,
it
challenging
determine
which
method
superior,
as
groups
react
differently
each
treatment,
even
though
a
notable
overall
reduction
observed.
Clean Energy,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 27, 2024
Abstract
Biogas
production
offers
numerous
advantages,
but
ongoing
research
and
development
are
essential
to
enhance
efficiency,
accelerate
production,
ensure
cost-effectiveness
as
a
sustainable
energy
source.
This
comprehensive
review
examines
the
anaerobic
digestion
process
of
cow
dung,
analyzing
critical
factors
such
reactor
type,
operating
conditions,
feedstock
pretreatment.
By
breaking
down
complex
organic
structures,
pretreatment
methods
thermal
chemical
treatments
significantly
increase
biogas
yields.
Additionally,
use
additives
trace
metal
nanoparticles
can
methane
making
more
efficient.
Also,
innovative
applications
for
facilities
discussed,
including
integrating
with
hydroponic
farming,
which
repurposes
nutrient-rich
byproducts
crop
growth,
using
waste
heat
generate
electricity.
Furthermore,
steam
reforming
pathway
hydrogen
increases
plants'
versatility.
The
findings
this
study
provide
actionable
strategies
optimize
utilize
promote
sustainability
reduce
reliance
on
fossil
fuels.
According
study,
taking
advantage
these
novel
approaches
will
maximize
benefits
contribute
transition
toward
greener
economy.
Energies,
Journal Year:
2022,
Volume and Issue:
15(19), P. 7409 - 7409
Published: Oct. 9, 2022
Background:
Bioenergy
attracts
much
attention
due
to
the
global
demand
for
renewable
and
sustainable
energy
resources.
Waste
biomass
feedstocks—date
pits,
coffee
waste,
cow
dung—require
efficient
environmentally
friendly
waste-management
technologies
such
as
pyrolysis.
Fast
pyrolysis
occurs
at
fast
heating
rates
(10–100
°C/s),
generates
high
bio-oil
yields,
is
most
widely
used
process
biofuel
generation.
The
aim
of
study
compare
effect
between
single,
binary,
ternary
feeds
on
thermal
degradation
behavior
composition.
Methods:
Thermogravimetric
analysis
(TGA)
was
conducted
30
°C/min
from
room
temperature
850
°C
understand
biomasses.
A
Pyroprobe®
reactor—a
micro-scale
pyrolyzer—was
conduct
500
with
a
rate
10
°C/s,
volatile
contents
were
quantified
using
gas
chromatograph–mass
spectrometer
(GC/MS).
Results:
showed
three
main
stages
decomposition
following
dehydration,
devolatilization,
char
different
single
multiple
feeds.
According
identified
compounds,
components
are
broadly
aldehydes,
amines,
aliphatic,
aromatics,
alcohols,
furans,
ketones,
acids.
single-biomass
products
have
four
compounds
in
common,
acetic
acid
ketone
groups
(acetic
acid,
2-propanone,
1-hydroxy-,
benzyl
methyl
ketone,
1,2-cyclopentanedione).
Conclusion:
generated
comprises
great
potential
volatiles,
diesel,
gasoline
production
carbon
atoms
ranging
C2–C33.
Future
studies
should
focus
understanding
procedural
parameters,
including
blending
ratio,
temperature,
rates,
Additional
molecular
techniques
be
employed
components’
reaction
mechanisms
produce
useful
products.
Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
31(21), P. 30819 - 30835
Published: April 15, 2024
Manure
from
food-producing
animals,
rich
in
antibiotic-resistant
bacteria
and
antibiotic
resistance
genes
(ARGs),
poses
significant
environmental
healthcare
risks.
Despite
global
efforts,
most
manure
is
not
adequately
processed
before
use
on
fields,
escalating
the
spread
of
antimicrobial
resistance.
This
study
examined
how
different
cattle
treatments,
including
composting
storage,
affect
its
microbiome
resistome.
The
changes
occurring
resistome
treated
samples
were
compared
with
those
raw
by
high-throughput
qPCR
for
ARGs
tracking
sequencing
V3-V4
variable
region
16S
rRNA
gene
to
indicate
bacterial
community
composition.
We
identified
203
mobile
genetic
elements
(MGEs)
manure.
Post-treatment
reduced
these
76
composted
51
stored
samples.
Notably,
beta-lactam,
cross-resistance
macrolides,
lincosamides
streptogramin
B
(MLSB),
vancomycin
decreased,
while
linked
MGEs,
integrons,
sulfonamide
increased
after
composting.
Overall,
total
abundance
significantly
dropped
both
treatments.
During
composting,
relative
was
lower
midway
than
at
end.
Moreover,
higher
biodiversity
observed
storage.
Our
current
research
shows
that
storage
effectively
reduce
However,
it
challenging
determine
which
method
superior,
as
groups
react
differently
each
treatment,
even
though
a
notable
overall
reduction
observed.
