Trends in Sciences,
Год журнала:
2024,
Номер
21(6), С. 7604 - 7604
Опубликована: Апрель 10, 2024
Although
tin
mining
activities
in
the
southern
part
of
Thailand
have
been
abandoned
for
more
than
40
years,
arsenic
contamination
old
tin-mining
areas
continues
to
pose
a
health
risk.
Fortunately,
natural
adsorption
by
sediment
has
reduced
concentration
water
maximum
allowable
level
within
10-kilometre
radius
mine
sources.
This
article
attempts
characterize
properties
along
creek
which
passes
through
tin-mine
Ron
Phibun
district,
Nakhon
Si
Thammarat
province,
Thailand,
where
most
severe.
It
was
found
that
Fe
tends
be
associated
with
capacity
sediment.
However,
pH
4
and
7
did
not
associate
capacity.
At
12,
solubility
increases,
making
it
less
likely
adsorbed
into
dissolve
water.
For
isotherms
sediment,
so-called
‘2-step
Langmuir/Freundlich
models’,
advance
switching
functions
(Logistic
or
Arctan
functions),
were
proposed.
Then,
based
on
principle
parsimony,
stepwise
model
reduction
approach
used
choose
optimal
models.
successfully
describe
historical
arsenic-contamination
data
past
14
years
(2005
-
2019)
predict
future
trends
qualitatively.
HIGHLIGHTS
Two-step
models
proposed
The
examined
described
as
function
metal-complex
formation
soils
GRAPHICAL
ABSTRACT
Ecotoxicology and Environmental Safety,
Год журнала:
2025,
Номер
292, С. 117927 - 117927
Опубликована: Март 1, 2025
Arsenic
(As)
is
a
carcinogen
that
threatens
ecosystems
and
human
health.
Due
to
its
high
adsorption,
microporosity,
biochar
widely
available
for
soil
remediation.
This
review
significantly
summarizes
the
current
status
of
waste
biomass
feedstock-based
metal-modified
As-contaminated
Firstly,
this
paper
briefly
describes
sources
hazards
As
in
soil,
secondly,
lists
eleven
feedstocks
preparing
biochar.
Agricultural,
domestic,
forestry
wastes
provide
plentiful
source
preparation.
Single
or
multi-metal
modifications
such
as
iron
(Fe),
manganese
(Mn),
cerium
(Ce)
can
effectively
improve
Arsenite
[As(III)]
arsenate
[As(V)]
adsorption
capacity
The
primary
mechanisms
removal
by
include
ion
exchange,
electrostatic
attraction,
surface
complexation,
redox
transformation,
H-bond
formation.
In
conclusion,
presents
an
in-depth
discussion
on
both
metal
modification,
providing
constructive
suggestions
future
development
remediate
soil.
Water,
Год журнала:
2024,
Номер
16(24), С. 3633 - 3633
Опубликована: Дек. 17, 2024
Arsenic
contamination
in
sludge
and
sediment
has
emerged
as
a
pressing
environmental
issue
with
far-reaching
implications.
This
review
delves
into
the
multifaceted
problem
of
arsenic
contamination,
focusing
on
its
complex
interactions
microbial
resistance
genes
(MRGs).
It
explores
key
role
microorganisms
biogeochemical
cycling
arsenic,
including
processes
such
reduction,
oxidation,
methylation,
volatilization.
describes
how
resist
through
that
encode
proteins
efflux
pumps,
enzymatic
detoxification,
intracellular
sequestration.
Arsenic,
naturally
occurring
element,
can
enter
various
natural
anthropogenic
pathways,
leading
to
detrimental
effects
quality.
Understanding
mobilization,
transformation,
their
ability
toxicity
MRGs
is
essential
for
effective
mitigation
remediation
strategies.
discusses
sources
distribution
sediment,
intricate
mechanisms
resistance,
potential
implications
management
human
health.
also
examines
current
research
trends
identifies
areas
requiring
further
investigation.
By
unraveling
interplay
between
microorganisms,
MRGs,
this
aims
contribute
deeper
understanding
guide
future
protection
efforts.
Sustainable
agriculture
has
become
increasingly
important
in
Tunisia
due
to
the
drought
that
been
affecting
country's
climate
recent
years.
This
a
major
threat
economy,
making
it
necessary
explore
alternative
methods
of
are
more
sustainable.
Moreover,
smart
hydroponic
cultivation
based
on
renewable
energies
widespread,
promoting
quality
and
efficiency
agricultural
production
despite
weather
parameters
variations
global
warming.
work
aims
create
sustainable
system
through
design
implementation
photovoltaic
(PV)
greenhouse.
The
greenhouse
will
utilize
advanced
technology
optimize
plant
growth
reduce
water
usage,
while
also
incorporating
solar
panels
generate
energy.
end
goal
is
self-sufficient
eco-friendly
can
provide
fresh
produce
local
communities
year-round.
In
this
work,
we
interested
automation
(HG)’s
thermal
conditioning
an
asynchronous
motor
pump
powered
by
PV
generator.
first
stage,
analyzed
mathematical
modeling
stand-alone
PV-HG
consists
generator,
three-phase
inverter,
pump,
system.
After
that,
developed
Field
Oriented
Control
proportional
integral
(PI)
regulators
adjust
rotation
speed
which
aimed
cooling
heating
needs
plant.
simulation
results
demonstrated
effectiveness
proposed
.
Additionally,
designed
implemented
internet
things
(IoT)
enable
remote
control
internal
external
HG.
intelligent
solution
utilizes
sensors,
microcontrollers,
other
devices
ensures
monitoring
maintaining
ideal
growing
conditions
for
our
plants,
guaranteeing
they
receive
proper
amount
temperature,
humidity,
lighting.
type
be
invaluable
tool
maximizing
yields
achieving
optimal
results.
With
right
approach
attention
detail,
efficient
environment
help
plants
flourish
Hygiene and Sanitation,
Год журнала:
2024,
Номер
103(2), С. 172 - 181
Опубликована: Март 15, 2024
Introduction.
The
paper
presents
the
results
of
assessment
risk
to
public
health
and
level
soil
contamination
with
heavy
metals
arsenic
in
a
small
town
foundry.
Materials
methods.
objects
study
are
morbidity
population
Melenkovsky
district
Vladimir
region
cover
city
Melenki.
probable
is
based
on
determination
epidemiological
indicators,
obtained
values
which
were
converted
into
normalized
by
marginal
error
background
(Δ).
Soil
samples
taken
zone
industrial
enterprises,
highways,
residential
private
sector,
landscape,
recreational
areas.
was
examined
X-ray
fluorescence
method
for
evaluationof
content
arsenic.
Results.
conducted
assess
allowed
establishing
district,
relative
regional
values,
children
have
very
high
nine
classes
diseases,
adults
6
diseases.
There
has
been
established
Melenka
be
probably
due
specifics
duration
operation
oldest
enterprise
‒
foundry
mechanical
plant.
In
central
part
city,
there
identified
local
areas
posing
risks,
determines
need
manage
permanent
environmental
hygienic
monitoring
here.
greatest
danger
arsenic,
whose
concentrations
almost
all
sampling
points
exceed
sanitary
standards.
limitations
related
one-time
number
reference
sites,
limits
possibilities
broader
interpretation
data
obtained.
Conclusion.
It
that
operating
long
time,
adjacent
territory,
can
bear
risks
even
during
prolonged
downtime
or
termination
its
main
activity.
chemical
territory
plant,
extremely
dangerous
terms
total
indicator,
requires
special
measures
remove
further
neutralize
elements.
To
reduce
pollution
required
modernization
enterprises
creation
expanded
protection
zones
around
them.
