Influence of micro-aeration in the production of volatile fatty acids (VFA) from wastewaters with high salinity
Fuel,
Год журнала:
2024,
Номер
375, С. 132566 - 132566
Опубликована: Июль 24, 2024
Waste
management
and
valorization
are
seen
as
pivotal
drivers
for
adopting
a
circular
economy.
The
production
of
volatile
fatty
acids
(VFA)
through
anaerobic
digestion
(AD)
fits
perfectly
into
these
emerging
social
industrial
dynamics,
being
the
VFA
considered
valuable
products,
namely
in
chemical
industries.
Therefore,
this
work
focuses
on
AD,
using
wastes
wastewaters,
with
high
salinity
content
(20
g/L)
continuous
bioreactors.
effect
micro-aeration
during
acidogenesis
high-salinity
wastes/wastewaters
was
accessed
more
than
500
days,
divided
5
main
periods,
by
analysing
different
physicochemical
parameters
like
oxidation–reduction
potential
(ORP),
salinity,
pH,
COD,
profile.
Sludge
properties
were
also
analysed
quantitative
image
analysis
(QIA)
integrating
Principal
Component
Analysis
(PCA).
results
demonstrate
that
does
not
appear
limiting
factor,
soluble
COD
(30
constant
operation
time
both
reactors,
well
VFA/sCOD
ratio
(60
%
−
80
%).
Due
to
micro-aeration,
differences
between
anoxic
(R1)
microaerophilic
(R2)
reactors
observed,
second
one
presenting
lower
value
ORP
some
periods
assay.
This
indicates
presence
aerobic
or
facultative
microorganisms,
which
have
consumed
oxygen.
Also,
higher
concentrations
hexanoate
reactor
obtained
those
periods.
application
QIA
combined
PCA
has
revealed
significantly
impacts
morphology
size
aggregates.
Язык: Английский
Analysing the expansion of the circular economy in the European Union: How important is the regional context?
Ecological Economics,
Год журнала:
2025,
Номер
231, С. 108560 - 108560
Опубликована: Фев. 18, 2025
Язык: Английский
Market concentration in the Galician canned industry: Has it been consolidated through green innovation?
Discover Sustainability,
Год журнала:
2025,
Номер
6(1)
Опубликована: Апрель 29, 2025
Язык: Английский
Status, developments, and sustainability of biowaste feedstock: A review of current progress
Renewable and Sustainable Energy Reviews,
Год журнала:
2025,
Номер
217, С. 115769 - 115769
Опубликована: Апрель 25, 2025
Язык: Английский
Evolution and Factors Influencing the Spatial Patterns of Fisheries and Aquaculture Products Trade within RCEP Countries: A Complex Network Analysis
Israeli Journal of Aquaculture - Bamidgeh,
Год журнала:
2024,
Номер
76(4)
Опубликована: Ноя. 18, 2024
This
study
aims
to
make
visible
and
investigate
changes
in
the
patterns
of
trade
fisheries
aquaculture
products,
which
are
heavily
traded
high
importance
for
food
security
many
Regional
Comprehensive
Economic
Partnership
(RCEP)
member
countries.
The
uses
products
data
from
2002
2022
applies
a
complex
network
analysis
unveil
within
RCEP
region.
It
analyzes
topological
structure
spatiotemporal
evolution
characteristics
network,
utilizes
QAP
model
further
examine
main
factors
influencing
network.
finds:
(1)
density
region
has
significantly
increased,
exhibiting
“small-world”
characteristics.
With
increasing
degree
integration,
there
is
still
much
room
improvement
cooperation
development
trade;
(2)
displays
pronounced
core-periphery
structure,
with
China
Japan
consistently
occupying
central
position
region’s
network;
(3)
size,
comparative
advantage,
foreign
dependence
degree,
per
capita
arable
land
area,
contiguity,
institutional
quality
significant
affecting
relationships
volume
among
countries
Язык: Английский