Agronomy,
Journal Year:
2023,
Volume and Issue:
13(10), P. 2601 - 2601
Published: Oct. 12, 2023
Soil
heavy
metal
pollution
caused
by
human
activities
has
become
one
of
the
most
critical
environmental
issues
with
a
global
concern.
Phytoremediation
is
widely
used
due
to
its
low
cost
and
friendliness.
However,
impact
metals
on
plant
growth
remains
unclear.
This
study
investigated
effects
photosynthetic
activity
Picris
divaricata
Vant.
under
different
cadmium
concentrations
using
hydroponics
cultivation
system.
The
results
showed
that
processes
P.
exhibited
phenomenon
promotion
in
Cd
inhibition
high
concentrations.
Under
medium
concentration
(≤25
μM),
there
was
no
toxicity
terms
growth,
but
inhibited
growth.
Fe
content
leaves
gradually
increased
as
increased;
it
reached
201.8
mg
kg−1
75
μM
Cd.
significant
difference
Mn
between
treatment
control
(p
>
0.05).
contents
carotenoid
ranged
3.06
3.26
mg/g
across
treatments,
showing
differences.
5–75
did
not
directly
affect
photosynthesis
divaricata.
Higher
reduced
stomatal
density
leaves,
resulting
mesophyll
conductance
limitations,
indirectly
affecting
photosynthesis.
These
research
provide
reference
for
evaluating
selecting
tolerant
plants
environmentally
friendly
approaches
remediate
pollution.
Environmental Science and Ecotechnology,
Journal Year:
2022,
Volume and Issue:
13, P. 100205 - 100205
Published: Sept. 8, 2022
The
rapid
expansion
of
both
the
global
economy
and
human
population
has
led
to
a
shortage
water
resources
suitable
for
direct
consumption.
As
result,
remediation
will
inexorably
become
primary
focus
on
scale.
Microalgae
can
be
grown
in
various
types
wastewaters
(WW).
They
have
high
potential
remove
contaminants
from
effluents
industries
urban
areas.
This
review
focuses
recent
advances
WW
through
microalgae
cultivation.
Attention
already
been
paid
microalgae-based
wastewater
treatment
(WWT)
due
its
low
energy
requirements,
strong
ability
thrive
under
diverse
environmental
conditions,
transform
nutrients
into
high-value
compounds.
It
turned
out
that
WWT
is
an
economical
sustainable
solution.
Moreover,
different
toxins
are
removed
by
biosorption,
bioaccumulation,
biodegradation
processes.
Examples
agricultural
runoffs
textile
pharmaceutical
industrial
effluents.
mitigate
carbon
dioxide
make
use
micronutrients
present
paper
highlights
application
pollutants
commonly
mechanisms,
simultaneous
resource
recovery,
efficient
co-culturing
systems
along
with
bottlenecks
prospects.
Journal of Environmental Management,
Journal Year:
2023,
Volume and Issue:
337, P. 117678 - 117678
Published: March 21, 2023
Water
is
the
most
valuable
resource
on
planet.
However,
massive
anthropogenic
activities
generate
threatening
levels
of
biological,
organic,
and
inorganic
pollutants
that
are
not
efficiently
removed
in
conventional
wastewater
treatment
systems.
High
(carbon,
nitrogen,
phosphorus),
emerging
chemical
contaminants
such
as
antibiotics,
pathogens
(namely
antibiotic-resistant
ones
related
genes)
jeopardize
ecosystems
human
health.
Conventional
systems
entail
several
environmental
issues:
(i)
high
energy
consumption;
(ii)
CO2
emissions;
(iii)
use
chemicals
or
generation
harmful
by-products.
Hence,
microalgal
(entailing
one
microalgae
species,
consortium
with
bacteria)
agents
towards
has
been
seen
an
environmentally
friendly
solution
to
remove
pollutants,
coliforms
antibiotic
resistance
genes.
In
recent
years,
authors
have
evaluated
for
different
types
wastewater,
agricultural,
municipal,
industrial.
Generally,
can
provide
removal
efficiencies
of:
up
99%,
90%
total
phosphorus,
and/or
organic
carbon,
respectively,
through
uptake
mechanisms,
antibiotics
frequently
found
wastewaters,
sulfamethoxazole,
ciprofloxacin,
trimethoprim
azithromycin
at
86%,
65%,
42%
93%,
desirable
mechanism,
biodegradation.
Although
by
species
complex
very
strain-specific,
it
also
possible
attain
coliform
Escherichia
coli
99.4%
98.6%,
respectively.
systems'
effectiveness
strongly
relies
biotic
abiotic
conditions,
thus
selection
operational
conditions
critical.
While
combination
selected
(microalgae
bacteria),
ratios
inoculum
concentration
allow
efficient
amounts
biomass
(that
be
further
converted
into
products
biofuels
biofertilisers),
factors
pH,
hydraulic
retention
time,
light
intensity
CO2/O2
supply
a
crucial
role
removal,
disinfection.
some
rationale
must
considered
according
purpose.
alkaline
pH
induces
hydrolysis
faecal
coliforms,
decreases
phosphates
solubility
formation
ammonium
from
ammonia.
Also,
while
increases
E.
Pseudomonas
aeruginosa,
well
growth
(and
uptake),
Enterococcus
faecalis
removal.
Therefore,
this
review
aims
critical
studies
application
pathogens;
discussing
feasibility,
highlighting
advantages
challenges
implementation
process,
presenting
current
case-studies
applications
Cleaner Chemical Engineering,
Journal Year:
2022,
Volume and Issue:
3, P. 100044 - 100044
Published: June 29, 2022
The
use
of
microalgae
for
CO2
sequestration
helps
in
mitigating
global
warming.
This
paper
reviews
the
application
with
emphasis
on
performance
evaluation,
lifecycle,
economic
assessment,
as
well
environmental
impact.
mechanism
is
done
during
photosynthesis,
via
bioconcentration.
Performance
evaluation
revealed
that
efficiency
capture
and
by
ranges
between
40%
93.7%.
However,
macro
carbon
emission
reduction
has
not
yet
been
fully
understood,
therefore
requires
more
studies.
Also,
cost-effectiveness
cultivation
still
needs
research
based
recent
realities.
It
recommended
design
operation
be
focused
so
technology
can
compete
favourably
existing
technologies.
Overall,
it
surmised
an
effective
technique
capture,
but
interesting
areas
development
greater
Energy Conversion and Management X,
Journal Year:
2022,
Volume and Issue:
16, P. 100323 - 100323
Published: Nov. 2, 2022
Microalgae
are
pervasive
organisms
regarded
as
conservative
alternatives
for
the
sustainable
synthesis
of
various
high-value-added
bio-products
to
replace
depleting
fossil
fuels
and
reduce
CO2
emissions.
However,
microalgae
biorefinery
is
still
very
far
from
being
commercially
viable
due
high
costs,
intensive
energy
requirements,
low
availability
biomass
biomolecules.
In
this
review,
current
status
discussed
by
establishing
efficiency
green
biotechnology
in
producing
wastewater
diverse
derived
biorefinery.
addition,
aspects
involved
production
bulk
chemicals
value-added
biorefinery,
including
their
roles
environmental
protection
promotion
an
integrated
circular
bio-economy
elucidated.
Lastly,
challenges
facing
recommendations
guide
future
research
toward
cost-effective,
more
efficient,
presented.
Bioprocess and Biosystems Engineering,
Journal Year:
2022,
Volume and Issue:
46(8), P. 1077 - 1097
Published: Nov. 4, 2022
The
worldwide
fossil
fuel
reserves
are
rapidly
and
continually
being
depleted
as
a
result
of
the
rapid
increase
in
global
population
rising
energy
sector
needs.
Fossil
fuels
should
not
be
used
carelessly
since
they
produce
greenhouse
gases,
air
pollution,
warming,
which
leads
to
ecological
imbalance
health
risks.
study
aims
discuss
alternative
renewable
source
that
is
necessary
meet
needs
industry
future.
Both
microalgae
macroalgae
have
great
potential
for
several
industrial
applications.
Algae-based
biofuels
can
surmount
inadequacies
presented
by
conventional
fuels,
thereby
reducing
'food
versus
fuel'
debate.
Cultivation
algae
performed
all
three
systems;
closed,
open,
hybrid
frameworks
from
algal
biomass
harvested,
treated
converted
into
desired
biofuels.
Among
these,
closed
photobioreactors
considered
most
efficient
system
cultivation
algae.
Different
types
systems
employed
such
stirred
tank
photobioreactor,
flat
panel
vertical
column
bubble
horizontal
tubular
photobioreactor.
type
along
with
various
factors,
light,
temperature,
nutrients,
carbon
dioxide,
pH
affect
yield
hence
biofuel
production.
present
numerous
benefits
terms
economic
growth.
Developing
based
on
provide
us
lot
socio-economic
advantages
contributing
publicly
maintainable
result.
This
article
outlines
third-generation
biofuels,
how
cultivated
different
systems,
influencing
technologies
conversion
biomass.
provided
these
new
generation
also
discussed.
development
algae-based
would
only
change
environmental
pollution
control
but
benefit
producers'
social
advancement.
