Oily
wastewaters
pose
significant
environmental
challenges,
requiring
effective
treatment
methods
for
sustainable
development.
This
study
investigates
the
potential
of
combining
filtration,
electrofiltration,
and
backwashing
using
a
ceramic
membrane
oily
water.
A
secondary
mullite
is
synthesized,
demonstrating
favorable
characteristics
such
as
high
permeate
flux
(534
LMH),
biaxial
flexural
strength
(75.21
MPa),
cost-effectiveness.
Experimental
investigations
were
performed
operational
parameters,
resulting
in
selection
pressure
2
bar
cross-flow
velocity
0.727
m/s
to
achieve
desirable
oil
removal
rates.
The
critical
electric
field
intensity
(Ecrit)
determined
experimentally
theoretically,
ranging
from
50
55
V,
guiding
optimal
voltages
electrofiltration.
Electrokinetic
phenomena,
including
electrophoresis,
electroosmosis,
bubble
formation,
are
harnessed
mitigate
fouling.
influence
feed
solution
conductivity
examined,
revealing
that
higher
salt
concentrations
increase
fouling
diminish
effectiveness.
Energy
consumption
analysis
indicates
energy
savings,
with
decrease
3.88
kWh/m³
no-voltage
condition
2.71
at
65
V
salt-free
solutions.
However,
concentrations,
increased
reduced
effectiveness
result
consumption.
findings
underscore
suitability
low-cost
membranes
water
treatment,
emphasizing
importance
optimizing
operating
parameters
enhanced
performance
efficiency.
South African Journal of Chemical Engineering,
Год журнала:
2023,
Номер
45, С. 294 - 304
Опубликована: Июнь 25, 2023
The
implementation
and
careful
adaptation
of
treatment
plants
is
currently
the
most
common
method
for
enhancing
water
quality,
especially
large-scale
supplies.
Nowadays,
natural
coagulants
are
used
due
to
their
environmental
friendliness.
Moringa
oleifera
Aloe
vera
palants
known
water.
main
goal
this
study
was
evaluate
removal
efficiency
color,
turbidity,
TDS,
COD,
phosphate
from
surface
by
utilizing
blended
powder
seeds
(MOS)
(AVP).
In
also,
pH,
stirring
speed
jar
test,
coagualant
dosage,
settling
time
were
also
considered
as
influencing
factors
on
percentages.
(AVP)
removed
color
(87.1%),
turbidity
(88.5%),
TDS
(92.1%),
COD
(52.6%),
(93.9%)
at
different
operating
parameters
optimum
condition.
Furthermore,
experimental
data
statistically
mathematically
analyzed
using
a
central
composite
design
(CCD)
response
methodology
(RSM),
revealing
that
quadratic
model
significant
removal.
valid
based
coefficient
determination,
but
aliased
such
it
not
appropriate
further
investigation.
Results in Engineering,
Год журнала:
2024,
Номер
23, С. 102657 - 102657
Опубликована: Авг. 7, 2024
Life
Cycle
Assessment
(LCA)
method
is
employed
to
study
and
mitigate
negative
environmental
impacts
using
various
approaches
via
OpenLCA
software.
This
paper
investigates
the
LCA
of
green
hydrogen
gas
production
from
produced
water
in
Oman,
Activated
Sludge
Method
(ASM)
Fluidized-Bed
Bioreactor
(FBB),
as
treatment
technologies.
Different
scenarios
were
considered,
utilizing
ReCiPe
midpoint
impact
over
100
years,
evaluate
global
warming
potential
(GWP100),
fossil
depletion
(FDP),
(WDP).
The
objective
compare
sustainability
Dark
Fermentation
(DF)
Electrolysis
methods
for
both
technologies
achieve
Oman's
Vision
2040.
DF
involves
sludge
primary
secondary
stages,
while
uses
tertiary
stage.
Results
show
that
50
%
(15,000
m³/day)
flow
production,
yields
60,000
kg
H2/day,
electrolysis
produces
833,333
H2/day.
difference
arises
because
depends
on
impacting
whereas,
relies
entirely
treated
water.
Both
processes
significantly
GWP100.
Incorporating
solar
power
ASM
FBB,
a
energy
source,
reduces
CO2
emissions
by
7560.28
CO2-eq
8245.18
electrolysis.
provides
novelty
application,
which
contributes
advancing
practices
through
evaluating
waste-to-energy
advocates
policy
making
regarding
recent
climate
change
commitments.
SPE Production & Operations,
Год журнала:
2023,
Номер
38(03), С. 367 - 382
Опубликована: Фев. 3, 2023
Summary
Produced
water
(PW)
is
an
undesirable
byproduct
generated
from
oil
and
natural
gas
production.
Due
to
the
large
volume
produced,
managing
its
disposal
challenging.
Generally,
PW
used
internally
for
operations
while
different
types
of
means
dispose
remaining
volumes.
Recently,
there
has
been
a
need
repurpose
customarily
disposed
other
industries’
applications.
This
presents
potential
opportunity
reduce
excessive
freshwater
usage
in
depletion
industries,
thus
aiding
conservation
as
one
goals
sustainable
development.
While
external
uses
are
viable
logical
solution,
challenges
relating
characterization,
treatment
technology,
economics
such
project.
Therefore,
effective
utilization,
remain
critical
issues
petroleum
industry
with
consideration
environment,
technical
aspects,
economics.
There
must
be
collaboration
among
all
stakeholders
harness
opportunities
merits
reuse
cost-effective
environmentally
solutions
technology
every
aspect
management.
review
comprehensive
overview
management,
current
practices
industry,
sectors.
A
detailed
account
each
method
possible
enumerated
associated
challenges,
how
these
can
mitigated.
Bioresources and Bioprocessing,
Год журнала:
2024,
Номер
11(1)
Опубликована: Июнь 2, 2024
Abstract
Produced
water
(PW)
from
oil
and
gas
exploration
adversely
affects
aquatic
life
living
organisms,
necessitating
treatment
before
discharge
to
meet
effluent
permissible
limits.
This
study
first
used
activated
sludge
pretreat
PW
in
a
sequential
batch
reactor
(SBR).
The
pretreated
then
entered
13
L
photobioreactor
(PBR)
containing
Scenedesmus
obliquus
microalgae
culture.
Initially,
10%
of
the
mixed
with
90%
culture
PBR.
After
exponential
growth
microalgae,
an
additional
25%
was
added
PBR
without
extra
nutrients.
reported
performance
as
well
reduction
effluent’s
total
organic
carbon
(TOC),
dissolved
solids
(TDS),
electrical
conductivity
(EC),
heavy
metals
content.
results
demonstrated
removal
efficiencies
64%
for
TOC,
49.8%
TDS,
49.1%
EC.
also
showed
reductions
barium,
iron,
manganese
by
95,
76,
52%,
respectively.
