Water,
Год журнала:
2024,
Номер
16(24), С. 3660 - 3660
Опубликована: Дек. 19, 2024
The
biosorption
of
heavy
metals
has
become
an
attractive
alternative
to
conventional
methods
and
is
considered
feasible,
environmentally
friendly
often
low-cost
option.
Five
microorganisms
(Rhodotorula
sp.,
Cladosporium
Bacillus
megaterium,
Trichosporon
sp.
Geotrichum
sp.)
were
isolated
from
different
environments
used
for
the
Cd(II)
aqueous
solutions
in
batch
mode
expand
upon
existing
studies
generate
new
data
related
main
that
could
be
successfully
applied
removal
wastewaters.
Considering
a
constant
biosorbent
dose
(5
g/L),
pH
(5.4)
temperature
(25
°C)
varying
contact
times
initial
pollutant
concentrations,
process
efficiency
uptake
capacity
biosorbents
assessed.
Statistical
analysis
experimental
results
revealed
time
longer
than
24
h
did
not
significantly
increase
or
by
B.
megaterium
which
means
available
binding
sites
on
cell
wall
immediately
participate
metal
ions.
For
other
three
biosorbents,
increasing
48
led
significant
efficiency.
A
comparison
values
each
had
highest
(8.53
mg/g),
followed
(8.21
mg/g).
lowest
capacity,
as
well
after
contact,
was
obtained
(0.73
mg/g
14.97%,
respectively).
FTIR
almost
all
functional
groups
present
surface
biosorbent,
but
their
involvement
differed
biosorbent.
phosphodiester,
amide
hydroxyl
found
Rhodotorula
involved
biosorption.
Separations,
Год журнала:
2025,
Номер
12(1), С. 16 - 16
Опубликована: Янв. 17, 2025
The
use
of
low-cost
biowaste
adsorbents
for
the
removal
toxic
metal
ions
from
aqueous
solutions
offers
significant
environmental
benefits.
This
research
evaluated
adsorption
and
recovery
Cd2+
Pb2+
in
batch
column
modes
with
luffa
peels
chamomile
flowers.
biosorbents
were
treated
0.4
M
nitric
acid
or
NaOH
base.
An
FTIR
analysis
sorbents
indicated
that
surface
OH,
C=O,
CO
COO
groups
played
a
role
process.
L-type
isotherms
obtained
Pb2+,
fitting
both
Langmuir
Freundlich
models,
maximum
capacities
34.0
mg/g
49.5
Adsorption
ion
fit
better
model
smaller
capacity
than
Pb2+.
Base-treated
have
higher
capacity.
kinetic
are
fast
followed
pseudo-second
order
chemosorption
model.
Fixed-bed
dynamic
Thomas
32.9
25.8
Cd2+.
efficiency
was
87
to
90%
over
three
adsorption–regeneration
cycles.
Bioengineering,
Год журнала:
2025,
Номер
12(2), С. 101 - 101
Опубликована: Янв. 22, 2025
End-of-life
(EoL)
mobile
phones
represent
a
valuable
reservoir
of
critical
raw
materials
at
higher
concentrations
compared
to
primary
ores.
This
review
emphasizes
the
need
transition
from
single-material
recovery
approaches
comprehensive,
holistic
strategies
for
recycling
EoL
phones.
In
response
call
sustainable
techniques
with
reduced
energy
consumption
and
pollutant
emissions,
biohydrometallurgy
emerges
as
promising
solution.
The
present
work
intends
most
relevant
studies
focusing
on
exploitation
microbial
consortia
in
bioleaching
biorecovery
processes.
All
living
organisms
macro-
micronutrients
their
metabolic
functionalities,
including
some
elements
contained
By
exploring
interactions
between
communities
diverse
found
phones,
this
paper
establishes
microbial-centric
perspective
by
connecting
each
element
layer
role
cell
system.
A
special
focus
is
dedicated
concepts
ecodesign
modularity
key
requirements
electronics
potentially
increase
selectivity
process.
bridging
science
design,
proposes
an
innovative
roadmap
optimize
metal
recovery,
aligning
principles
circular
economy
advancing
scalable
biotechnological
solutions
electronic
waste
management.
Environments,
Год журнала:
2025,
Номер
12(4), С. 97 - 97
Опубликована: Март 21, 2025
At
present,
the
amount
of
heavy
metals
in
some
aquifers
exceeds
limits
established
by
standards,
especially
developing
countries.
Cadmium
is
present
high
concentrations
aquifers;
contact
with
cadmium
can
lead
to
adverse
health
effects.
Adsorption
one
most
efficient
and
low-cost
methods
currently
used
separate
from
water
systems.
In
order
obtain
a
sustainable
metal
adsorption
system,
abundant,
low-cost,
biodegradable,
easy-to-treat
organic
waste
compounds
were
sought.
Three
biosorbents
chosen:
orange,
peanut,
banana
peel,
which,
due
their
functional
groups,
attract
positive
ions
form
bond
that
allows
them
be
absorbed
separated
aqueous
solution.
The
presence
groups
such
as
-OH,
-CO,
-COO−,
-N-H
found
main
responsible
for
biosorption
(FTIR).
Square
wave
voltammetry
was
analyze
an
It
systems
best
capacities
untreated
peanut
peel
(284.2
mg/g),
orange
(275.5
treated
(229.21
mg/g).
Treatment
peels
uptake
not
recommended.
Polish Journal of Microbiology,
Год журнала:
2025,
Номер
74(1), С. 19 - 32
Опубликована: Март 1, 2025
Abstract
Gelatine-processing
wastewater
contains
much
residual
sludge
due
to
its
high
calcium
ion
concentration
and
chemical
oxygen
demand.
In
this
study,
N3-4,
a
microbial
strain
with
excellent
tolerance
capacity,
was
screened
identified
as
Virgibacillus
pantothenticus
using
morphological
observation,
physiological
biochemical
testing,
16S
rRNA
sequence
analysis.
Its
growth
characteristics
were
investigated,
the
maximum
adsorption
of
reached
572.43
μg/g
under
optimal
conditions
(contact
time,
72.68
min;
biomass
dosage,
1.3
g/l;
initial
concentration,
142.01
mg/l).
Conditions
optimized
response
surface
methodology
structural
characterization.
The
structure
bacterial
pellets
altered
from
flat
rough,
accompanied
by
bulges
sediments
after
Ca
2+
treatment,
according
Energy-dispersive
X-ray
spectroscopy
precipitates
calcium(II)
treatment
revealed
immobilization
species
on
cell
surface.
results
indicate
that
–OH,
–NH
2
,
C≡C,
C=O,
–CH
–C–O–,
–C–N
groups
play
significant
role
in
dispersion
V.
.
