Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(12), P. 5101 - 5101
Published: June 12, 2024
Supercritical
water
oxidation
is
a
promising
technology
for
decomposition
of
industrial
wastewater
and
sludge.
However,
the
system
operated
under
high
temperature
pressure
(usually
higher
than
500
°C
25
MPa).
Corrosion
component
materials
salt
deposition
may
lead
to
leakage
or
even
burst
vessel
in
SCWO
system,
resulting
level
worry
about
safe
operation
system.
In
this
paper,
safety
management
accident-
control
strategies
are
introduced
according
commercial-scale
plant
China.
The
strategy
refers
special
design
some
facilities.
Different
types
potential
accidents
analyzed
coping
different
levels
severity
described
detail.
valuable
commercial
plants
other
pressure.
This
study
explores
a
sustainable
method
for
converting
sewage
sludge
with
80%
water
content
into
reusable
biochar
through
drying
and
pyrolysis.
The
phase
reduces
to
12-15%
using
energy
from
pyrolysis-produced
biochar,
minimizing
external
requirements.
Pyrolysis
decomposes
organic
materials,
producing
gases,
oils,
which
are
burned
recovery.
can
be
reused
up
eight
times,
enhancing
resource
efficiency
sustainability.
Heat
generated
during
both
pyrolysis
is
recycled
within
the
system,
further
improving
efficiency.
process
demonstrates
an
innovative,
closed-loop
approach
waste
management,
maximizing
recovery,
significant
potential
industrial
applications.
Life
cycle
assessment
(LCA)
has
been
widely
used
to
evaluate
the
carbon
negativity
and
environmental
impacts
of
dioxide
removal
(CDR)
pathways.
Various
monitoring,
reporting,
verification
(MRV)
protocols
have
developed
assess
credits
CDR
projects
within
voluntary
compliant
markets.
Many
MRV
incorporate
life
thinking,
LCA
methods,
data.
This
perspective
examined
recent
studies
published
by
main
registries,
focusing
on
four
critical
land-based
methods:
bioenergy
combined
with
capture
storage,
biochar,
enhanced
rock
weathering,
afforestation
reforestation.
We
compared
accounting
impact
methods
employed
in
these
identify
their
methodological
similarities
differences.
Our
analysis
reveals
that
community
can
support
providing
insights
into
baselines,
additionality,
uncertainty,
multifunctionality,
safeguards,
holistic
emission
factors,
overlooked
pools.
recommend
future
research
prioritize
timing,
permanence,
scaling,
dynamic
modeling
for
CDR.
Addressing
co-benefit
land
use
change
will
further
benefit
both
development.
Collaboration
between
communities
is
essential
developing
robust
frameworks
markets
policymaking.
Environmental Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: May 31, 2024
This
study
aimed
to
create
a
comprehensive
evaluation
method
for
sewage
sludge
(SS)
treatment
and
disposal
technologies,
considering
carbon
emission
environmental
impacts.
Life
cycle
assessment
(LCA)
were
conducted
on
six
SS
technologies
in
China.
The
assessments
used
the
IPCC
factor
approach
calculate
emissions
CML2001
determine
impact
factors.
Additionally,
colour-coded
was
implemented
quantify
results.
found
that
S1
(anaerobic
digestion
+
land
application)
had
lowest
impact,
making
it
optimal
technology.
scenario
of
669
kg
CO2(t
DS)−1
impacts
5.20E-10.
A
sensitivity
analysis
show
each
unit
total
results
showed
landfilling
has
high
Therefore,
controlling
greenhouse
gases
toxic
substances
landfills
is
crucial
reducing
pollution.
