Waste,
Год журнала:
2023,
Номер
1(4), С. 960 - 976
Опубликована: Ноя. 24, 2023
Dye-containing
effluent
generated
in
textile
industries
is
polluting
and
complex
wastewater.
It
should
be
managed
adequately
before
its
final
destination.
The
up-flow
anaerobic
blanket
(UASB)
reactor
application
an
ecofriendly
cost-competitive
treatment.
present
study
briefly
reviews
the
UASB
for
dye-containing
wastewater
valorization.
Bioenergy
clean-water
production
potential
during
treatment
are
emphasized
to
promote
resource
recovery
industries.
Hydraulic
retention
time
(HRT),
organic
loading
rate
(OLR),
pH,
temperature,
hydraulic
mixing
influence
sludge
granulation,
microbial
activity,
dye
removal.
HRT
OLR
ranges
of
6–24
h
1–12
kg
m−3
d−1
chemical
oxygen
demand
(COD)
at
a
mesophilic
temperature
(30–40
°C)
recommended
efficient
In
these
conditions,
efficiencies
color
COD
50–97%
60–90%
reported
bench-scale
studies.
Complex
structures
can
hinder
biomineralization.
Pretreatment
may
necessary
reduce
concentration.
Carbon-source
redox
mediators
added
expedite
kinetic
reactions.
A
biogas
yield
1.48–2.70
L
UASB,
which
treats
effluents,
documented.
Cotreatment
locally
available
substrate
could
increase
productivity
reactors.
Organic
waste
industry,
such
as
sludge,
cotton,
starch,
make
cotreatment
cost
competitive.
water
reuse
allow
environmental
economic
benefits.
Studies
on
combined
systems
integrating
membrane
processes,
ultrafiltration
nanofiltration,
reusable
pretreatment
improvements
might
realize
complete
technology.
bioenergy
usage
integrated
trains
operating
costs
assist
process
sustainability
industry.
Energy Nexus,
Год журнала:
2023,
Номер
11, С. 100218 - 100218
Опубликована: Июнь 25, 2023
The
aim
of
this
study
was
to
investigate
the
simultaneous
biogas
generation
and
leachate
treatment
using
municipal
waste
its
polluted
at
Mashhad
landfill
in
northeast
Iran.
research
focused
on
examining
kinetic
model
CH4,
CO2,
CO,
H2S
O2
production
with
without
recirculation
(LR)
through
control/test
wells.
findings
from
both
wells
showed
an
increase
logarithmic
CH4
rate,
coefficient
related
rate
methane
concentration
ranging
0/52-0/64
control
well
0/47-0/55
test
well,
respectively.
Under
LR
conditions,
it
observed
that
slower,
taking
average
120
minutes
reach
50%
concentration,
compared
just
15
LR.
Using
first-order
equations,
coefficients
were
measured
be
2/17
h−1
0/9
for
wells,
analysis
recirculated
revealed
a
significant
decrease
(∼30%)
total
volume
72%
COD
removal,
which
could
help
manage
overloaded
problems
landfill.
removal
found
0/036
day−1
whereas
more
rapid
50
g.l−1
about
14
0/012
day−1,
three
times
higher
than
well.
Additionally,
nitrogen
content
indicated
although
amount
ammonia
increased
LR,
relatively
low
comparison
conditions
equivalent
1394
ppm
1000
This
aligns
water-energy-nexus
concept
by
offering
sustainable
solution
management
energy
generation,
while
also
addressing
water
challenges
associated
operations.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
319, С. 100574 - 100574
Опубликована: Июль 1, 2024
Pharmaceutical
pollutants
in
wastewater
can
be
effectively
degraded
by
heterogeneous
photocatalytic
processes
(HPP);
under
light
irradiation,
these
methods
use
semiconductor
photocatalysts
to
produce
reactive
oxygen
species
(ROS),
which
oxidize
and
mineralize
organic
(OPs)
into
innocuous
byproducts.
Reactant
transport
the
photocatalyst
surface,
reactant
adsorption,
charge
carrier
formation
separation,
redox
reactions,
product
desorption
are
all
part
of
mechanisms.
This
review
article
analyzes
compares
various
approaches
used
prepare
photocatalysts.
The
composition,
morphology,
crystallinity,
production
scale,
influence
synthesis
technique
selection.
While
hydrothermal,
microwave-assisted,
sonochemical,
mechanochemical
provide
greater
variety
synthesising
diverse
with
varying
compositions,
morphologies,
surface
characteristics,
flame
hydrolysis
is
appropriate
for
large-scale
TiO2
Because
it
regulates
photocatalyst's
charge,
electrolytic
solution's
pH
significant
processes.
Within
a
certain
range,
an
increase
temperature
generally
results
continuous
breakdown
efficacy;
beyond
that,
rate
decomposition
decreases.
These
findings
besides
giving
researchers
broad
overview
current
status
HP
process
we
believe
will
also
inform
its
future
applications
advancements.
Water Environment Research,
Год журнала:
2025,
Номер
97(2)
Опубликована: Фев. 1, 2025
In
this
study,
the
treatment
of
landfill
leachate
wastewater
by
chemical
coagulation,
an
electro-membrane
bioreactor
(e-MBR),
and
anaerobic
hybrid
system
was
studied.
First,
coagulation
process
applied
to
wastewater,
which
is
referred
their
high
organic
pollutants.
Aluminum
sulfate
(alum),
poly
aluminum
chloride
(PAC),
ferric
(FeCl3),
ferrous
(FeSO4)
were
used
as
coagulants.
After
determining
coagulant
type,
pH
optimization
(6-10)
amount
(0.5-2.5
g/l)
optimized.
coagulation-flocculation
experiments,
optimum
conditions
determined
1.0
g/l
alum
at
9.
At
these
conditions,
oxygen
demand
(COD),
total
phenolic
contents
(TPC),
color
analyses
examined
31.16%,
35.32%,
24.42%
removal
efficiencies
obtained,
respectively.
pretreatment,
e-MBR
obtain
further
treatment.
Iron
(Fe)
electrode
ultrafiltration
membrane
(UP150)
in
system.
5,
10,
20
V
electric
current
time-dependent
flux
measurements
carried
out.
COD,
TPC,
performed
both
mixed
liquor
permeate.
The
results
indicated
that
over
˃90%
efficiency
for
achieved
when
increased
from
5
V.
addition,
it
also
observed
fouling
decreased
increased.
Since
still
did
not
meet
discharge
criteria,
obtained
subjected
10
days
incubation,
found
be
99.25%,
100%,
99.57%,
PRACTIONER
POINTS:
bioreactor,
Optimum
1
9
coagulation.
It
color,
TPC
99.5%,
99.6%,
