Polymers,
Год журнала:
2023,
Номер
16(1), С. 11 - 11
Опубликована: Дек. 19, 2023
Vinasse,
a
waste
from
the
bioethanol
industry,
presents
crucial
environmental
challenge
due
to
its
high
organic
matter
content,
which
is
difficult
biodegrade.
Currently,
no
sustainable
alternatives
are
available
for
treating
amount
of
vinasse
generated.
Conversely,
biopolymers
such
as
cellulose,
carboxymethylcellulose,
and
chitosan
emerging
an
interesting
alternative
control
their
flocculating
capacity
against
several
compounds.
This
study
seeks
determine
thermodynamic
behavior
in
silico
interactions
among
three
(cellulose,
chitosan)
regarding
15
compounds
found
vinasse.
For
this,
Particle
Mesh
Ewald
(PME)
method
was
used
association
with
Verlet
cutoff
scheme,
wherein
Gibbs
free
energy
(ΔG)
calculated
over
50
ns
simulation
period.
The
findings
revealed
that
cellulose
showed
strong
affinity
flavonoids
like
cyanidin,
maximum
−84
kJ/mol
minimum
−55
observed
phenolic
acids
other
flavonoids.
In
contrast,
displayed
highest
acids,
gallic
acid,
reaching
−590
kJ/mol.
However,
3-methoxy-4-hydroxyphenyl
glycol
(MHPG),
it
reached
−70
interaction
flavonoid
ranged
−105
−96
Finally,
carboxymethylcellulose
(CMC)
demonstrated
isoquercetin
−238
kJ/mol,
while
were
almost
negligible.
Alternatively,
CMC
exhibited
−124
MHPG,
less
favorable
minimal
interactions.
These
results
suggest
there
interfacial
sorption
contaminants
onto
biopolymers,
indicating
potential
use
removal
effluents
industry.
Water,
Год журнала:
2023,
Номер
15(18), С. 3225 - 3225
Опубликована: Сен. 11, 2023
Anaerobic
membrane
bioreactor
(AnMBR)
technology
is
gaining
interest
for
circular
economy
integration
in
the
water
sector.
However,
its
complexity,
arising
from
of
anaerobic
processes
with
technology,
poses
a
key
challenge.
Developing
an
appropriate
instrumentation,
control,
and
automation
(ICA)
system
essential
reliable
long-term
operation.
In
this
study,
ICA
was
developed
to
successfully
manage
AnMBR
pilot
plant
co-digesting
two
waste
streams
(microalgae
primary
sludge).
The
implementation
enabled
stable
operation
576
days,
ensuring
proper
performance
biological
filtration
yielding
215
NmLCH4·gCODinf−1
at
35
°C.
Variables
such
as
temperature,
oxidation-reduction
potential,
permeate
flux
biogas
flow
were
identified
parameters
controlled.
This
included
23%
reduction
integral
absolute
error
compared
PID
controller
maintenance
0.5%
standard
deviation
digester
temperature.
These
controls
optimization,
rapid
detection
process
issues,
early
corrective
actions.
As
start-up
strategy
ensure
long
term,
critical
tests
conducted,
guaranteeing
competitive
total
annualized
equivalent
cost
0.0016
EUR/m3
optimal
conditions.
study
also
calculated
greenhouse
gas
emissions
different
scenarios,
proposing
more
sustainable
operations,
mesophilic
conditions,
upgrading
through
microalgae
cultivation,
grid
injection,
reducing
by
423
kgCO2e·tCOD−1.
To
viability
emerging
technologies
AnMBR,
protocols
are
crucial,
including
favorable
operating
implementation,
parameter
control
technical,
economic
environmental
success.
Membranes,
Год журнала:
2023,
Номер
13(8), С. 710 - 710
Опубликована: Июль 31, 2023
Sugarcane
industries
produce
wastewater
loaded
with
various
pollutants.
For
reuse
of
treated
and
valorization
biogas
in
a
Sahelian
climatic
context,
the
performance
an
anaerobic
membrane
bioreactor
was
studied
for
two
solid
retention
times
(40
days
infinity).
The
pilot
fed
real
from
sugarcane
operation
organic
load
ranging
15
to
22
gCOD/L/d
353
days.
temperature
reactor
maintained
at
35
°C.
Acclimatization
first
stage
during
which
suspended
solids
(SS)
volatile
(VSS)
evolved
9
13
g/L
5
10
respectively,
VSS/SS
ratio
about
80%.
While
operating
time
(SRT)
40
days,
chemical
oxygen
demand
(COD)
removal
efficiency
reached
85%,
(VSS)/(TSS)
94%
reactor.
At
infinity
time,
these
values
were
96%
80%,
respectively.
40-day
resulted
change
transmembrane
pressure
(TMP)
0.0812
2.18
bar,
maximum
methane
production
0.21
L/gCOD
removed.
These
are
lower
than
those
observed
infinite
0.29
achieved,
corresponding
variation
up
3.1
bar.
shorter
fouling
seemed
decrease
production.
However,
we
note
interesting
rates
over
95%
turbidity.
Applied Sciences,
Год журнала:
2024,
Номер
14(21), С. 9898 - 9898
Опубликована: Окт. 29, 2024
Heterogeneous
photocatalysis
is
an
advanced,
efficient
oxidation
process
that
uses
solar
energy
to
be
sustainable
and
low-cost
compared
conventional
wastewater
treatments.
This
study
synthesized
BiOI/Fe3O4
using
the
solvothermal
technique,
evaluating
stoichiometric
ratios
of
Bi/Fe
(2:1,
3:1,
5:1,
7:1)
under
simulated
irradiation
optimize
degradation
caffeic
acid,
a
pollutant
found
in
from
wine
pisco
industry.
The
nanomaterial
with
5:1
ratio
(BF-5)
was
most
effective,
achieving
77.2%
180
min.
Characterization
by
X-ray
Diffraction
(XRD),
Transmission
Electron
Microscopy
(TEM),
Brunauer–Emmett–Teller
(BET),
Barrett–Joyner–Halenda
(BJH),
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
Diffuse
Reflectance
(DRS),
Vibrating
Sample
Magnetometry
(VSM)
showed
BF-5
has
porous
three-dimensional
structure
BiOI
nanosheets
coating
Fe3O4
surface,
while
retaining
pristine
properties.
magnetite
provided
magnetic
properties
facilitated
recovery
photocatalyst,
reaching
89.4%
recovery.
These
findings
highlight
potential
as
recoverable
photocatalyst
for
industrial
applications.
technical,
economic,
environmental
feasibility
were
also
evaluated
at
technological
readiness
level
(TRL)
project
real
