Alexandria Engineering Journal,
Journal Year:
2021,
Volume and Issue:
61(7), P. 5213 - 5222
Published: Oct. 31, 2021
Bioremediation
has
been
considered
as
an
efficient
environmental
pollution
control
technique.
It
relies
on
microbial
cells
like
yeasts
which
are
unicellular
organisms
that
widely
used
due
to
their
availability,
easily
cultured,
economical,
and
eco-friendly.
The
immobilization
of
living
the
magnetic
nanoparticles
surface
is
a
novel
technique
obtain
nanobiocatalyst.
In
this
work,
yeast
Saccharomyces
cerevisiae
were
immobilized
Fe3O4
(MNPs)
biosorbent
remove
methyl
orange
(M.O)
dye
from
aqueous
solution
in
batch
system
through
biosorption
mechanism.
MNPs
characterized
using
XRD
SEM.
FTIR
was
characterize
before
after
biosorption.
experiments
carried
out
various
factors
such
contact
time,
pH,
M.O
concentration,
dosage,
temperature.
results
indicated
significant
removal
efficiency
96.52
%
obtained
at
optimum
conditions
pH
6.5,
50
mg/l
initial
1.5
g/l
110
rpm
shaker,
35
°C
Adsorption
isotherm
studies
illustrated
data
followed
Freundlich
model
with
correlation
coefficient
R2
>
0.99.
values
thermodynamic
parameters
estimated
showed
mechanism
exothermic
negative
value
ΔHo
(-7.8737
KJ/mol),
spontaneous
ΔGo
(−5108.22,
−6286.16,
−7475.21)
temperatures.
Moreover,
positive
ΔSo
(28.47
J/mol)
pointed
increment
randomness
interface
solution-biosorbent.
Physiologia Plantarum,
Journal Year:
2021,
Volume and Issue:
173(2), P. 526 - 535
Published: March 25, 2021
Heavy
metals
in
industrial
wastewaters
are
posing
a
serious
threat
to
the
environment
and
human
health.
Microalgae
increasingly
being
seen
as
potential
solutions
this
problem
they
can
remove
pollutants
through
biosorption.
This
process
offers
certain
advantages
over
other
more
traditional
metal
removal
techniques
it
is
simple,
inexpensive,
eco-friendly,
be
performed
wide
range
of
experimental
conditions.
Biosorption
possible
due
unique
complex
structure
microalgal
cell
wall.
The
variety
functional
groups
on
surface
wall
(such
carboxyl
or
amino
groups)
act
binding
sites
for
heavy
metals,
thus
removing
them
from
environment.
review
focuses
composition
most
commonly
used
microalgae
shows
role
their
biosorption
process.
also
aims
report
models
predict
velocity
capacities.
Environmental Engineering Research,
Journal Year:
2022,
Volume and Issue:
28(4), P. 220631 - 0
Published: Oct. 16, 2022
Heavy
metal
contamination
of
the
ecosystem
remains
one
severe
global
threats.
Even
in
trace
quantities,
heavy
metals
and
metalloids
such
as
chromium,
lead,
mercury,
cadmium,
nickel,
cobalt
are
toxic
carcinogenic,
posing
a
serious
threat
to
human
life.
Certain
microbes
plants
have
evolved
detoxifying
pathways
fight
harmful
effects
these
inorganic
metals,
paving
door
for
bioremediation.
Because
its
environmentally
benign
nature,
economic
viability,
low
labor
effort
requirements,
bioremediation
outperforms
other
approaches
eliminating
metals.
This
review
highlights
potential
on
remediation
context
environmental
protection
also
focuses
critical
tolerance
mechanisms
used
by
combating
contaminations.
Furthermore,
bacteria,
fungus,
algae,
plants,
biosurfactants,
biofilms
genetically
altered
microorganisms
removal
was
reviewed
this
study.
Applying
techniques
sustainable
technology
near
future
has
shown
synergistic
benefits
with
many-fold
increase
Processes,
Journal Year:
2021,
Volume and Issue:
9(10), P. 1696 - 1696
Published: Sept. 22, 2021
Persistent
toxic
substances
including
persistent
organic
pollutants
and
heavy
metals
have
been
released
in
high
quantities
surface
waters
by
industrial
activities.
Their
presence
environmental
compartments
is
causing
harmful
effects
both
on
the
environment
human
health.
It
was
shown
that
their
removal
from
wastewaters
using
conventional
methods
adsorbents
not
always
a
sustainable
process.
In
this
circumstance,
use
of
microorganisms
for
uptake
can
be
seen
as
being
an
environmentally-friendly
cost-effective
strategy
treatment
effluents.
However,
spite
confirmed
potential
remediation
pollutants,
are
yet
applied
at
scale.
Thus,
current
paper
aims
to
synthesize
analyze
available
data
literature
support
upscaling
microbial-based
biosorption
bioaccumulation
processes.
The
sources
microbial
mechanisms
pollutant
significant
results
revealed
so
far
scientific
identified
covered
review.
Moreover,
influence
different
parameters
affecting
performance
discussed
systems
also
very
important
designing
processes
highly
considered.
analysis
performed
offers
perspective
making
decisions
scaling-up
efficient
operation,
life
cycle
assessment
point
view
wastewater
bioremediation.
This
since
sustainability
through
standardized
methodologies
such
(LCA),
hasn’t
analyzed
literature.
