Investigación y Ciencia de la Universidad Autónoma de Aguascalientes,
Год журнала:
2024,
Номер
91
Опубликована: Янв. 31, 2024
En
México,
la
mayoría
de
los
municipios
depositan
sus
residuos
sólidos
urbanos
(RSU)
en
sitios
no
controlados
o
rellenos
sanitarios
(RS);
por
lo
tanto,
existe
necesidad
mejorar
condiciones
y
conocer
el
impacto
existente
aire,
agua
suelo.
Se
realizó
caracterización
elemental
del
lixiviado,
suelo
agua.
Además,
se
caracterizó
fisicoquímica
microbiológicamente
una
muestra
pozo
cercana
al
RS
(1.5
km)
lixiviado.
analizó
calidad
aire
las
clima.
Los
lixiviados
presentan
alta
carga
orgánica,
materia
nitrogenada
cloruros,
un
bajo
índice
biodegradabilidad
DBO/DQO
0.18.
La
concentración
contaminantes
encuentra
dentro
límites
permisibles
debido
a
que
es
zona
abierta
velocidad
viento
favorece
dispersión
estos.
metales
provenientes
son
retenidos
evitando
su
migración
...
Frontiers in Environmental Science,
Год журнала:
2024,
Номер
12
Опубликована: Сен. 2, 2024
The
management
of
landfill
leachate
presents
a
significant
environmental
challenge,
necessitating
comprehensive
and
dynamic
treatment
approach.
This
review
delves
into
the
critical
issue
treatment,
exploring
its
impact,
technologies,
regulatory
frameworks,
path
towards
sustainable
practices.
explores
complexities
leachate,
emphasizing
need
for
waste
practices
to
safeguard
health.
Our
analysis
highlights
evolution
conventional
advanced
technologies
designed
mitigate
these
risks,
focusing
on
membrane
oxidation
processes,
promising
potential
emerging
techniques
such
as
adsorption
biological
nutrient
removal.
These
are
evaluated
their
efficiency,
cost
implications,
sustainability
impacts,
underscoring
challenges
opportunities
within
current
landscape
treatment.
aims
provide
insights
designing
efficient
effective
systems
through
detailed
methods.
By
examining
case
study
in
Changsha
City,
effectiveness
system
integrating
various
is
demonstrated.
underscores
interconnectedness
human
activities,
health,
management,
importance
holistic
It
stresses
continuous
improvement
adoption
reduce
footprint
landfills.
Ultimately,
it
calls
multiple
economic
considerations,
readiness
address
future
contributing
advancement
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Апрель 22, 2024
Abstract
Microwave
(MW)
heating
has
gained
significant
attention
in
food
industries
and
biomass-to-biofuels
through
pyrolysis
over
conventional
heating.
However,
constraints
for
promoting
MW
related
to
the
use
of
different
absorbers
are
still
a
major
concern
that
needs
be
investigated.
The
present
study
was
conducted
explore
performance
biochar
as
low-cost
absorber
performing
pyrolysis.
Experiments
were
performed
on
under
dosing
(25
g,
37.5
50
g),
power
(400
W,
700
1000
W),
particle
sizes
(6
mm,
8
10
mm).
Results
showed
significantly
impacted
average
rate
(AHR)
from
17.5
65.4
°C/min
at
400
W
g.
AHR
first
increased,
then
no
changes
obtained,
examined
by
full
factorial
design,
with
94.6%
fitting
actual
data
predicted
data.
model
suggested
size
influenced
less
AHR.
Furthermore,
microwave
absorption
efficiency
weight
loss
investigated,
decreased
which
means
17.16%
achieved
rather
than
W.
Biochar
estimated
employing
mass-balance
analysis,
2–10.4%
change
obtained
owing
higher
rates
powers
dosing.
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Ноя. 4, 2023
Landfill
leachates
contain
harmful
substances
viz.
chemicals,
heavy
metals,
and
pathogens,
that
pose
a
threat
to
human
health
the
environment.
Unattended
leachate
can
also
cause
ground
water
contamination,
soil
pollution
air
pollution.
This
study
focuses
on
management
of
leachate,
by
recirculating
rich,
nutrient-filled
fluid
back
into
landfills,
turning
it
bioreactor,
thereby
maximising
performance
parameters
landfills
favourable
for
electricity
production
waste
energy
plants.
demonstrates
sustainable
alternative
method
utilising
fluid,
rather
than
treating
using
an
extremely
expensive
treatment
process.
Further,
experimentally
investigates
effect
varying
levels
five
input
landfill
including
particle
size,
addition,
inorganic
content
in
waste,
recirculation
rate,
age,
each
at
levels,
multiple
Taguchi's
L25
standard
orthogonal
array.
Experimental
results
are
analysed
integrated
MCDM
approach
i.e.
MEREC-PIV
statistical
techniques
such
as
analysis
mean
(ANOM)
variance
(ANOVA).
The
indicate
optimal
setting
is
size
9
ppm,
addition
80
Ktoe,
2%,
rate
250
l/day
age
3
years.
found
be
most
significant
parameter
landfill.
presents
novel
produce
power
plants
which
may
enhance
their
profitability
sustainability.
