Land,
Journal Year:
2024,
Volume and Issue:
13(6), P. 799 - 799
Published: June 4, 2024
High
population
growth,
a
lack
of
wastewater
treatment
plants
and
poor
management
are
major
challenges
in
Timor-Leste
(East
Timor).
One
the
approaches
government
is
to
separate
into
greywater
blackwater
from
domestic,
commercial,
residential,
industrial
areas.
Three
methods
were
applied
obtain
insight
locations
discharge
grey-
develop
cost-effective
strategy:
field
survey
data
collection,
interviews
with
over
130
participants
local
authorities
communities,
open-source
mapping
discharge.
This
research
concluded
that
47.7%
grey
discharged
open
sewers
connected
directly
sea.
Most
communities
their
due
absence
management,
policies
regulations,
communities’
understanding
possible
health
impacts
wastewater.
The
impact
showed
most
children
these
have
suffered
diarrhea
(73.8%),
rainy
season,
there
high
possibility
infection
waterborne
diseases.
literature
review,
mapping,
show
demand
for
strategy
improvement.
Low-cost
nature-based
solutions
such
as
constructed
wetlands
bioswales
can
be
implemented
skills
materials
improve
situation
address
other
biodiversity
loss,
heat
stress,
drought,
floodings.
These
installations
easier
rebuild
than
large-scale
infrastructure
given
multiple
hazards
occur
Timor-Leste:
landslides,
earthquakes,
strong
wind,
pluvial
fluvial
floodings,
they
serve
coastal
protection.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(3), P. 2704 - 2704
Published: Feb. 2, 2023
Herein,
we
report
the
performance
of
some
low-cost
biosorbents
developed
by
environment-friendly
modification
walnut
shells.
Two
types
were
prepared
ecological
shell
surfaces:
(1)
obtained
hot
water
treatment
(WSH2O)
and
(2)
produced
mercerization
(WSNaOH).
Different
techniques
used
to
evaluate
morphological,
elemental,
structural
biosorbents,
comparison
with
raw
materials.
These
characterization
involved
scanning
electron
microscopy
(SEM)
coupled
energy-dispersive
X-ray
analysis,
Fourier-transform
infrared
spectroscopy
(FTIR).
The
employed
for
removal
methylene
blue
(MB)
crystal
violet
(CV)
cationic
dyes
(as
model
organic
pollutants)
from
aqueous
solutions.
kinetic
adsorption
data
mainly
followed
pseudo-first-order
model.
maximum
capacities
ranged
102
110
mg/g
observed
at
330
K.
Equilibrium
fitted
Langmuir
Freundlich
isotherm
models.
calculated
values
thermodynamic
parameters
suggested
that
investigated
processes
exergonic
(ΔG
<
0)
exothermic
(ΔH
0).
In
addition,
a
possible
valorization
cost-effective
eco-friendly
spent
was
tested
performing
secondary
anionic
dyes.
Separations,
Journal Year:
2023,
Volume and Issue:
10(4), P. 229 - 229
Published: March 26, 2023
Recovery
of
wastewater
is
essential
for
better
management
water
resources
and
can
aid
in
reducing
regional
or
seasonal
shortages.
When
algae
were
used
to
clean
wastewater,
amazing
benefits
guaranteed,
such
as
a
decrease
the
formation
dangerous
solid
sludge
creation
valuable
algal
biomass
through
recycling
nutrients
wastewater.
The
trace
elements
nitrogen,
phosphorus,
others
that
microalgae
need
cell
development
are
frequently
present
contaminated
Hence,
microalgal
bioremediation
this
study
an
effective
technique
simultaneous
treatment
COD,
NH3-N,
orthophosphate
from
domestic
production.
Different
concentrations
wastewaters
used.
maximum
removals
attained
were:
84%
COD
on
fifth
day
using
lowest
mixing
ratio
50%,
95%
ammoniacal
97%
phosphorus.
highest
production
was
achieved
at
12,
except
80%
where
growth
rate
increased
until
14
400
mg/L.
