Transforming Food Industrial Sludge Into Sustainable Resources: Innovations in Waste Management and Renewable Energy Recovery
Business Strategy and the Environment,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
ABSTRACT
This
study
comprehensively
investigates
the
potential
of
food
industrial
sludge
as
a
renewable
resource
within
expanding
global
industry.
Grounded
in
theoretical
framework
circular
economy
and
sustainability
sciences,
it
delves
into
composition
sludge,
comprising
diverse
organic
(proteins,
carbohydrates,
lipids,
fibers)
inorganic
elements
(minerals,
heavy
metals,
trace
elements),
highlighting
its
environmental
economic
implications.
The
focus
is
on
evaluating
key
utilization
methods—anaerobic
digestion,
thermal
treatment
(pyrolysis
gasification),
composting,
bioconversion—for
transforming
valuable
resources
such
biogas,
biochar,
compost.
These
methods
are
assessed
based
their
alignment
with
sustainable
waste
management
theories
practices,
particularly
concerning
recovery.
Empirical
data
from
case
studies
industry
reports
incorporated
to
provide
concrete
examples
successful
practices.
For
instance,
empirical
indicate
that
anaerobic
digestion
can
reduce
volume
by
up
70%
generate
biogas
an
energy
yield
approximately
25
MJ
per
kg
dry
sludge.
Pyrolysis
sequester
3
t
CO
2
ton
biochar
produced.
demonstrate
considerable
promise
for
production,
nutrient
recovery,
reducing
greenhouse
gas
emissions,
supporting
approach.
addresses
challenges
management,
including
compositional
variability,
contaminant
presence,
necessity
effective
mitigate
risks
water
soil
pollution
odor
issues.
Findings
not
only
viable
but
also
essential
minimizing
impact,
conserving
finite
resources,
promoting
research
contributes
insights
policymakers,
stakeholders,
scientists,
enriching
body
knowledge
framed
context
Sustainable
Development
Goals
(SDGs),
SDG
6
(Clean
Water
Sanitation),
7
(Affordable
Clean
Energy),
12
(Responsible
Consumption
Production).
Language: Английский
Impact of thermal pretreatment on food waste chemical characteristics alteration during anaerobic fermentation with Saccharomyces cerevisiae inoculation: Protein vs carbohydrate
Biomass and Bioenergy,
Journal Year:
2025,
Volume and Issue:
197, P. 107801 - 107801
Published: March 18, 2025
Language: Английский
Aeration Optimization for the Biodrying of Market Waste Using Negative Ventilation: A Lysimeter Study
Clean Technologies,
Journal Year:
2024,
Volume and Issue:
6(4), P. 1519 - 1536
Published: Nov. 20, 2024
This
study
investigates
the
optimization
of
aeration
rates
for
biodrying
market
waste
using
negative-pressure
ventilation.
Market
waste,
characterized
by
a
high
moisture
content
(MC)
and
rapid
decomposition,
presents
challenges
in
management.
Over
12
days,
three
(ARs)
0.2,
0.4,
0.6
m3/kg/day
were
examined,
most
effective
continuous
ventilation
configuration
was
identified
terms
heat
generation,
reduction,
efficiency.
The
results
indicate
that
AR
retention
removal
0.2
m3/kg/day,
achieving
6.63%
MC
reduction
9.12%
low
heating
value
(LHV)
increase.
Gas
analysis
showed
that,
while
supported
microbial
activity
during
initial
7
sustained
higher
overall
CO2
production
due
to
its
greater
rate.
findings
also
suggest
with
can
achieve
significant
weight
loss
leachate
generation
when
paired
rate
69.8%
increased
compaction
being
recorded.
suggests
variable
ARs
optimize
biodrying,
making
more
suitable
conversion
refuse-derived
fuel
or
landfill
pre-treatment
improving
waste-to-energy
processes
sustainability.
Language: Английский
Enhancing Sewage Sludge Stabilization, Pathogen Removal, and Biomass Production through Indigenous Microalgae Promoting Growth: A Sustainable Approach for Sewage Sludge Treatment
Hajer Ben Hamed,
No information about this author
Antoine Debuigne,
No information about this author
Hetty KleinJan
No information about this author
et al.
Recycling,
Journal Year:
2024,
Volume and Issue:
9(5), P. 97 - 97
Published: Oct. 12, 2024
Sewage
sludge
(SS),
a
byproduct
of
wastewater
treatment
plants,
poses
significant
environmental
and
health
risks
if
not
properly
handled.
Conventional
approaches
for
SS
stabilization
often
involve
costly
energy-consuming
processes.
This
study
investigated
the
effect
promoting
native
microalgae
growth
in
on
its
stabilization,
pathogen
bacteria
removal,
valuable
biomass
production.
The
settleability,
filterability,
extracellular
polymeric
substances
(EPSs)
was
examined
as
well.
Experiments
were
conducted
photobioreactors
(PBRs)
without
O2
supply
CO2
release
under
controlled
parameters.
results
show
improvement
with
reduction
volatile
solids
(VSs)
by
47.55%.
Additionally,
fecal
coliforms
E.
coli
efficiently
removed
2.25
log
6.72
log,
respectively.
Moreover,
Salmonella
spp.
detected
after
15
days
treatment.
settleability
improved
71.42%.
However,
worsening
filterability
properties
observed,
likely
due
to
decrease
floc
size
following
protein
content
tightly
bound
EPS
fraction.
Microalgae
production
16.56
mg/L/day,
mean
0.35
g/L
at
end
batch
treatment,
representing
10.35%
total
final
biomass.
These
findings
suggest
that
microalgal
could
be
sustainable
cost-effective
production,
enhancement
sludge-settling
characteristics,
notwithstanding
potential
filtration-related
considerations.
Language: Английский