Environmental Advances,
Journal Year:
2023,
Volume and Issue:
13, P. 100395 - 100395
Published: June 25, 2023
The
generation
of
municipal
solid
waste
(MSW)
has
emerged
as
a
significant
challenge
to
sustainable
development
in
many
countries.
Pyrolysis,
thermal
process,
offers
promising
green
solution
by
converting
MSW
into
biochars.
This
mini-review
summarizes
recent
studies
on
the
physicochemical
properties
and
applications
biochars
derived
from
MSW.
Potential
uses
MSW-derived
include
environmental
remediation,
soil
amendment,
carbon
sequestration.
However,
diverse
across
highlight
importance
characterizing
these
materials
before
their
application
for
different
purposes.
Nevertheless,
present
an
attractive
avenue
management,
with
potential
deliver
multiple
economic
benefits.
Renewable and Sustainable Energy Reviews,
Journal Year:
2023,
Volume and Issue:
175, P. 113187 - 113187
Published: Jan. 25, 2023
Biochar
addition
in
anaerobic
digesters
is
an
emerging
technique
for
enhancing
high-solids
digestion.
Recycling
of
biochar
can
further
enhance
performance
and
reduce
costs
production;
however,
mixing
with
feedstock
separating
from
digestate
impractical.
A
more
pragmatic
method
applying
digestion
could
be
coupling
a
leach
bed
reactor
(LBR)
biochar-packed
filter
(AF)
to
form
two-phase
system.
Separating
the
process
between
reactors
improve
efficiency
by
hydrolysis
acidogenesis
LBR
producing
higher
quality
biogas
AF.
However,
systems
inefficient
if
separation
–
referred
as
phase
poor.
This
article
aims
to:
(i)
integrate
current
knowledge
literature
investigating
batch
LBR-AF
understanding
role
different
parameters
on
efficiency;
(ii)
explore
idea
medium
Feedstocks
that
rapidly
degrade
have
ongoing
VFA
production
are
particularly
suitable
systems.
Controllable
identified
critical
inhibitor
mitigation
include
co-digestion,
recirculation
parameters,
media
properties,
inoculation
temperature.
The
application
other
highlights
potential
application.
Future
research
should
consider
trade-offs
when
optimising
performance,
assess
economic
viability
considering
additional
expenses
Environments,
Journal Year:
2023,
Volume and Issue:
10(7), P. 127 - 127
Published: July 19, 2023
This
study
offers
a
review
of
machine
learning
(ML)
applications
in
membrane
bioreactor
(MBR)
systems,
an
emerging
technology
advanced
wastewater
treatment.
The
focuses
on
implementing
ML
algorithms
to
enhance
the
prediction
fouling,
control
and
optimize
system,
predict
faults
early,
thereby
enabling
development
novel
cleaning
strategies.
Key
such
as
artificial
neural
networks
(ANNs),
support
vector
machines
(SVMs),
random
forest,
reinforcement
(RL)
are
briefly
introduced,
with
emphasis
their
potential
limitations
applications.
main
challenges
obstructing
implementation,
namely
data
quality,
interpretability,
transferability
ML,
identified.
Finally,
future
research
trends
proposed,
including
integration
big
data,
Internet
Things
(IoT),
hybrid
model
development.
also
underscores
need
for
interdisciplinary
collaboration
investment
management,
along
implementation
new
policies
addressing
privacy
security.
By
these
challenges,
into
MBRs
has
significantly
performance
reduce
energy
footprint,
providing
sustainable
solution
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(11), P. 6529 - 6529
Published: May 27, 2022
Water
pollution
caused
by
heavy
metals
(HMs)
poses
a
serious
risk
to
human
health
and
the
environment
can
increase
of
diabetes,
cancer,
hypertension
in
particular.
In
this
study,
two
full-scale
wastewater
treatment
plants
(WWTPs)
industrial
zones
southern
China
were
selected
analyze
microbial
community
structure,
diversity,
similarity,
differentiation
anoxic/oxic
(AO)
membrane
bioreactor
(AO-MBR)
units
under
stress
HMs.
High-throughput
sequencing
showed
that
diversity
abundance
higher
AO
process
than
AO-MBR
process.
WWTPs,
common
dominant
phyla
Proteobacteria
Bacteroidetes,
while
genera
Gemmatimonadaceae,
Anaerolineaceae,
Saprospiraceae,
Terrimonas.
Manganese
(Mn)
zinc
(Zn)
positively
correlated
with
Saccharimonadales,
Nakamurella,
Micrococcales,
Microtrichales,
whereas
copper
(Cu)
iron
(Fe)
Longilinea
Ferruginibacter.
Additionally,
relative
abundances
Chloroflexi,
Patescibacteria,
Firmicutes
differed
significantly
(p
<
0.05)
between
processes.
These
results
may
provide
comprehensive
outlooks
on
characterization
communities
which
could
also
help
reduce
potential
environmental
risks
effluent
from
WWTPs
located
zones.
Bioresource Technology,
Journal Year:
2023,
Volume and Issue:
385, P. 129432 - 129432
Published: June 30, 2023
This
study
describes
the
valorization
of
avocado
seed
(AS)
within
a
green
biorefinery
concept
using
microwave-assisted
autohydrolysis.
After
treatment
at
temperatures
150-230
°C
for
5
min,
resulting
solid
and
liquor
were
characterized.
The
temperature
220
led
to
simultaneous
optimal
values
antioxidant
phenolics/flavonoids
(42.15
mg
GAE/g
AS,
31.89
RE/g
respectively)
glucose
+
glucooligosaccharides
(38.82
g/L)
in
liquor.
Extraction
with
ethyl
acetate
allowed
recovery
bioactive
compounds
while
maintaining
polysaccharides
extract
was
rich
vanillin
(99.02
mg/g
AS)
contained
several
phenolic
acids
flavonoids.
phase
phenolic-free
subjected
enzymatic
hydrolysis
produce
glucose,
reaching
9.93
105
g
glucose/L,
respectively.
work
demonstrates
that
autohydrolysis
is
promising
technology
obtain
fermentable
sugars
from
seeds
following
scheme.
