Foods,
Journal Year:
2023,
Volume and Issue:
12(6), P. 1204 - 1204
Published: March 12, 2023
This
study
investigated
concentrations
of
cadmium
(Cd)
in
2465
vegetable
samples
(52
species)
from
2018
to
2022
and
estimated
the
associated
health
risk
for
local
consumers.
The
average
concentration
Cd
was
0.035
mg
kg−1,
percentage
exceeding
Chinese
maximum
allowed
3.89%
(96/2465).
top
five
species
with
highest
levels
were
Lilium
brownii
F
(0.182
kg−1),
Allium
chinense
G
(0.117
macrostemon
Bunge
(0.105
Colocasia
esculenta
(0.064
Amaranthus
tricolor
L
(0.054
kg−1).
Bulb
vegetables
had
a
higher
relative
accumulation
compared
other
vegetables.
varied
significantly
across
sampling
areas
years.
mean
daily
intake
(EDI)
through
consumption
0.519
μg
kg−1
bw
per
day
adults
0.217
children.
target
hazard
quotients
(THQs)
all
less
than
threshold
1
both
indicates
that
there
is
low
consumption.
However,
routine
monitoring
food
still
crucial
ensure
safety
protect
public
health.
Cleaner Engineering and Technology,
Journal Year:
2023,
Volume and Issue:
17, P. 100687 - 100687
Published: Oct. 30, 2023
This
study
deals
with
the
reduction
of
diverse
pollutant
including
chromium
from
tanning
effluent
by
using
bio-adsorbent
developed
a
naturally
available
coconut
fibre.
The
experiment
examined
varying
several
parameters
like
pH
(3.0-5.0),
adsorbent
dosage
(1.5-4.0
g
L-1),
time
(5-360
min),
concentration
(131.62-248.19
ppm),
and
temperature
(298-338
K).
Pyrolyzed
activated
fibre
powder
(PACF)
was
prepared
characterized
Fourier
Transformed
Infrared
Spectroscopy
(FTIR)
Field
Emission
Scanning
Electron
Microscopy
(FESEM)
to
determine
functional
groups
surface
morphology.
FTIR
spectra
PACF
confirmed
broader
cellulosic
O-H
stretching
vibration
peak
at
3404
3387
cm-1
before
after
adsorption.
To
narrate
adsorption
equilibrium,
Langmuir
Freundlich
isotherms
were
used
maximum
capacity
found
81.30
mg
g-1.
kinetics
process
studied
pseudo-first-order
pseudo-second-order
models,
where
kinetic
model
better
fitted
data.
pollution,
such
as
content
(66.53%),
total
dissolved
solids
(TDS)
(63.77%),
biochemical
oxygen
demand
(BOD)
(58.19%),
chemical
(COD)
(61.69%),
electrical
conductivity
(EC)
(64.39%),
chrome
effluents
achieved.
Regeneration
simple
desorption
HCl
neutralized
NaOH
solution.
fiber
is
available,
non-toxic,
biocompatible
biodegradable
that
unexplored
for
removal
effluent.
bioadsorbent
support
circular
economy
biological
waste
has
both
advantages
water
treatment
management.
good
efficiency
remove
chromium(III)
other
pollutants
Frontiers in Environmental Science,
Journal Year:
2022,
Volume and Issue:
10
Published: Nov. 2, 2022
Mining
activities
has
generated
large
amounts
of
mine
tailings
each
year,
and
these
usually
contain
high
concentrations
heavy
metal
pollutants,
which
not
only
cause
serious
damage
to
the
local
surrounding
soil
ecosystems,
but
also
harm
human
health
via
transmission
food
chain.
Phytoremediation
is
treated
as
environmentally
friendly,
long-term
effective
low-cost
restoration
method.
However,
tailing
acidification,
low
organic
matter
content,
poor
water
holding
capacity
compaction
make
plant
struggle
survive.
Biochar,
a
conditioner
can
promote
growth
by
improving
physical,
chemical
biological
properties
soil,
thus
strengthening
ability
phytoremediation
in
contaminated
tailings.
This
review
elaborates
how
physicochemical
biochar
affect
phytoremediation;
summarized
raw
materials
characteristics.
Finally,
future
research
directions
are
prospected.
Journal of Hazardous Materials Advances,
Journal Year:
2024,
Volume and Issue:
14, P. 100427 - 100427
Published: April 16, 2024
Water
pollution
caused
by
chromium
released
from
tannery
is
a
serious
concern
to
the
environment
and
public
health.
Chromium
removal
effluent
crying
need
before
discharging
surface
water.
In
this
study,
acrylic
acid-grafted
sawdust
was
prepared
Tectona
grandis
grafting
with
acid
employing
gamma
irradiation
in
presence
of
air
Mohr's
salt.
It
treated
NaOH
characterization
morphology
functional
groups
modified
studied
SEM
FTIR..
The
effects
solution
pH,
adsorbent
dosage,
adsorption
time,
initial
Cr(III)
ion
concentration
were
investigated
batch
sorption
studies.
process
found
be
temperature
dependent.
Langmuir
Freundlich
isotherms
applied
realize
depth,
it
that
isotherm
model
fitted
well
experimental
data
(R2
value
0.983).
maximum
monolayer
capacity
for
aquous
21.55
mg
g-1
at
25°C.
Pseudo-first-order
pseudo-second-order
kinetic
models
employed
analyze
kinetics
process,
followed
model,
i.e.
chemisorption.
This
study
revealed
has
decent
potential
effluents.
