Resources Conservation & Recycling Advances,
Journal Year:
2023,
Volume and Issue:
19, P. 200184 - 200184
Published: Oct. 12, 2023
Wastewater
treatment
processes
produce
large
amounts
of
excess
biological
sewage
sludge,
which
disposal
requires
energy
and
expenditure,
is
not
devoid
adverse
environmental
effects.
Economic
sustainability
considerations
suggest
that
embedded
resources
in
sludge
(energy,
nutrients,
raw
materials
process
by-products)
should
be
properly
exploited
to
create
consolidate
a
virtuous
wastewater-based
Circular
Economy
cycle.
This
paper
presents
review
sludge-to-energy
sludge-to-resources
recovery
routes
with
emphasis
on
recent
developments,
as
well
the
benefits
limitations
applicable
technologies
for
ensuring
efficiency
through
critical
analysis
current
literature.
In
particular,
improvement
anaerobic
digestion
final
products
exploitation,
thermochemical
sludge-embedded
recovery,
biorefinery
nutrients
are
discussed.
most
cases,
however,
technology
readiness
level
(TRL)
described
still
low
generalized
adoption,
hence,
notwithstanding
excellent
development
prospects,
it
probably
too
early
predict
real
impact
many
bioproducts
recoverable
from
an
actual
global
circular
bioeconomy.
Water Research,
Journal Year:
2022,
Volume and Issue:
219, P. 118505 - 118505
Published: April 27, 2022
Global
phosphorus
reserves
are
under
pressure
of
depletion
in
the
near
future
due
to
increased
consumption
primary
reservoirs
and
improper
management
phosphorus.
At
same
time,
a
considerable
portion
global
marine
water
bodies
has
been
suffering
from
eutrophication
excessive
nutrient
loading.
The
environment
can
be
considered
as
valuable
source
rich
eutrophic
seawater
sediment
which
could
potentially
serve
mines
future.
Hence,
sustainable
recovery
strategies
should
adapted
for
systems
provide
growing
market
demand
simultaneously
control
eutrophication.
In
this
review,
possible
removal
environments
discussed
detail.
Bio-based
relying
on
natural
uptake/release
metabolism
living
organisms
suggested
promising
options
that
both
waters
achieving
ecosystem.
Among
them,
utilization
microorganisms
seems
develop
novel
strategies.
However,
research
gap
technical
applicability
these
is
still
considerably
big.
Therefore,
focus
development
through
laboratory
and/or
field
studies.
Coupling
mining
with
other
valorisation
pathways
(i.e.,
metal
recovery,
energy
production)
also
improve
overall
sustainability
economic
viability.
Environmental,
societal
challenges
altogether
well
addressed
prior
real
scale
applications.
Bioengineered,
Journal Year:
2022,
Volume and Issue:
13(5), P. 13474 - 13506
Published: May 2, 2022
Phosphorus
is
one
of
the
most
important
macronutrients
needed
for
growth
plants.
The
fertilizer
production
market
uses
80%
natural,
non-renewable
phosphorus
resources
in
form
phosphate
rock.
depletion
those
deposits
forces
a
search
other
alternatives,
including
biological
waste.
This
review
aims
to
indicate
ways
recover
from
biowaste,
with
particular
emphasis
on
wastewater,
sewage
sludge,
manure,
slaughter
or
food
A
comparison
utilized
methods
and
directions
future
research
based
latest
presented.
Combining
biological,
chemical,
physical
thermal
treatment
appears
be
effective
way
wastewater
sludge
terms
recovery.
Hydrothermal,
thermochemical,
adsorption
thermally
treated
adsorbents
are
characterized
by
high
recovery
rate
(over
95%).
For
animal
by-products
waste,
chemical
seems
optimal
solution
over
96%.
Due
its
large
volume
relatively
low
content,
resource
that
requires
additional
highest
possible
amount
phosphorus.
Pretreatment
combined
improve
compressive
evaluation
crucial
this
area.
Resources Conservation & Recycling Advances,
Journal Year:
2023,
Volume and Issue:
19, P. 200184 - 200184
Published: Oct. 12, 2023
Wastewater
treatment
processes
produce
large
amounts
of
excess
biological
sewage
sludge,
which
disposal
requires
energy
and
expenditure,
is
not
devoid
adverse
environmental
effects.
Economic
sustainability
considerations
suggest
that
embedded
resources
in
sludge
(energy,
nutrients,
raw
materials
process
by-products)
should
be
properly
exploited
to
create
consolidate
a
virtuous
wastewater-based
Circular
Economy
cycle.
This
paper
presents
review
sludge-to-energy
sludge-to-resources
recovery
routes
with
emphasis
on
recent
developments,
as
well
the
benefits
limitations
applicable
technologies
for
ensuring
efficiency
through
critical
analysis
current
literature.
In
particular,
improvement
anaerobic
digestion
final
products
exploitation,
thermochemical
sludge-embedded
recovery,
biorefinery
nutrients
are
discussed.
most
cases,
however,
technology
readiness
level
(TRL)
described
still
low
generalized
adoption,
hence,
notwithstanding
excellent
development
prospects,
it
probably
too
early
predict
real
impact
many
bioproducts
recoverable
from
an
actual
global
circular
bioeconomy.
