Nanotechnology,
Год журнала:
2023,
Номер
34(35), С. 352001 - 352001
Опубликована: Май 11, 2023
Bio-nanotechnology
is
one
of
the
new
and
sound
techniques
that
have
various
advantages
over
conventional
methods
wastewater
treatment.
The
utilization
nanomaterials
like
nanoparticles
for
treatment
emerging
field
research.
Both
physical
chemical
can
be
used
nanoparticle
synthesis,
but
synthesis
based
on
algae
(biological
method)
has
numerous
others
as
it
environmentally
friendly
sustainable.
Top-down
bottom-up
are
two
approaches
generally,
bio-reduction
(bottom-up
approach)
to
synthesize
nanoparticles.
Nanoparticles
synthesized
inside
cell
called
intracellular
outside
surface
extracellular
synthesis.
Temperature,
pH,
reaction
time
some
factors
influence
size,
properties
Characterization
carried
out
with
help
UV-visible
spectroscopy
(UV-vis),
x-ray
diffraction,
Fourier
transfer
infrared
spectroscopy,
etc.
Algal
highly
efficient
in
remediation
contaminants
heavy
metals
dyes
from
wastewater.
In
present
review,
algal
containing
metals,
dye,
discussed.
Moreover,
challenges
opportunities
this
also
highlighted.
As
its
initial
stage,
therefore,
a
lot
research
gaps
present,
which
only
filled
by
further
Environmental Chemistry Letters,
Год журнала:
2022,
Номер
21(1), С. 97 - 152
Опубликована: Окт. 8, 2022
Abstract
The
development
and
recycling
of
biomass
production
can
partly
solve
issues
energy,
climate
change,
population
growth,
food
feed
shortages,
environmental
pollution.
For
instance,
the
use
seaweeds
as
feedstocks
reduce
our
reliance
on
fossil
fuel
resources,
ensure
synthesis
cost-effective
eco-friendly
products
biofuels,
develop
sustainable
biorefinery
processes.
Nonetheless,
in
several
biorefineries
is
still
infancy
stage
compared
to
terrestrial
plants-based
lignocellulosic
biomass.
Therefore,
here
we
review
seaweed
with
focus
production,
economical
benefits,
feedstock
for
anaerobic
digestion,
biochar,
bioplastics,
crop
health,
food,
livestock
feed,
pharmaceuticals
cosmetics.
Globally,
could
sequester
between
61
268
megatonnes
carbon
per
year,
an
average
173
megatonnes.
Nearly
90%
sequestered
by
exporting
deep
water,
while
remaining
10%
buried
coastal
sediments.
500
gigatonnes
replace
nearly
40%
current
soy
protein
production.
Seaweeds
contain
valuable
bioactive
molecules
that
be
applied
antimicrobial,
antioxidant,
antiviral,
antifungal,
anticancer,
contraceptive,
anti-inflammatory,
anti-coagulants,
other
cosmetics
skincare
products.
Environmental Chemistry Letters,
Год журнала:
2023,
Номер
21(3), С. 1419 - 1476
Опубликована: Фев. 24, 2023
Abstract
Climate
change
issues
are
calling
for
advanced
methods
to
produce
materials
and
fuels
in
a
carbon–neutral
circular
way.
For
instance,
biomass
pyrolysis
has
been
intensely
investigated
during
the
last
years.
Here
we
review
of
algal
lignocellulosic
with
focus
on
products
mechanisms,
oil
upgrading,
combining
anaerobic
digestion,
economy,
life
cycle
assessment.
Products
include
oil,
gas,
biochar.
Upgrading
techniques
comprise
hot
vapor
filtration,
solvent
addition,
emulsification,
esterification
transesterification,
hydrotreatment,
steam
reforming,
use
supercritical
fluids.
We
examined
economic
viability
terms
profitability,
internal
rate
return,
return
investment,
carbon
removal
service,
product
pricing,
net
present
value.
also
reviewed
20
recent
studies
found
that
method
highly
influenced
yield,
ranging
from
9.07
40.59%
10.1
41.25%
biochar,
11.93
28.16%
syngas.
Feedstock
type,
pyrolytic
temperature,
heating
rate,
reaction
retention
time
were
main
factors
controlling
distribution
products.
Pyrolysis
mechanisms
bond
breaking,
cracking,
polymerization
re-polymerization,
fragmentation.
Biochar
residual
forestry
could
sequester
2.74
tons
dioxide
equivalent
per
ton
biochar
when
applied
soil
thus
potential
remove
0.2–2.75
gigatons
atmospheric
annually.
The
generation
bio-oil
process
is
estimated
be
economically
feasible.
Current Pollution Reports,
Год журнала:
2022,
Номер
8(4), С. 369 - 383
Опубликована: Авг. 18, 2022
Abstract
Algae
cultivation
complements
wastewater
treatment
(WWT)
principles
as
the
process
uptakes
nutrients
while
assimilates
CO
2
into
biomass.
Thus,
application
of
algae-based
WWT
is
on
upward
trajectory
more
attention
for
recovery
and
capture
reducing
its
economic
challenge
in
circular
economy
concept.
However,
complexity
algal
ecological
characteristics
induces
techno-economic
challenges
industry
implementation.
Algae-based
relies
totally
ability
algae
to
uptake
store
Therefore,
removal
efficiency
proportional
biomass
productivity.
This
mechanism
limits
applications
low
nutrient
concentration
wastewater.
The
hydraulic
retention
time
(HRT)
significantly
long
(i.e.
>
10
days),
compared
a
few
hours
bacteria-based
process.
Phototrophic
are
most
used
studies
well
pilot-scale
trials.
Application
phototrophic
faces
supply
illumination.
Collectively,
significant
landscape
required
has
limited
organic
removals,
which
require
pretreatment
wastewaters
before
flowing
can
be
connection
with
remove
partial
capturing
.
Future
research
should
strive
achieve
fast
high
growth
rate,
strong
environmental
tolerance
species,
simple
downstream
processing
high-value
There
also
clear
urgent
need
systematic
analysis
both
carbon
credit
assessment
values
facilitate
identification
prioritisation
barriers
lower
cost
WWT.
Graphical
abstract
Frontiers in Plant Science,
Год журнала:
2023,
Номер
14
Опубликована: Март 30, 2023
Sustainable
agriculture
practices
involve
the
application
of
environment-friendly
plant
growth
promoters
and
additives
that
do
not
negatively
impact
health
ecosystem.
Stringent
regulatory
frameworks
restricting
use
synthetic
agrochemicals
increase
in
demand
for
organically
grown
crops
have
paved
way
development
novel
bio-based
promoters.
In
this
context,
microalgae
biomass
derived
offer
sources
promotors
enhance
crop
productivity
impart
disease
resistance.
These
beneficial
effects
could
be
attributed
to
presence
wide
range
biomolecules
such
as
soluble
amino
acid
(AA),
micronutrients,
polysaccharides,
phytohormones
other
signaling
molecules
biomass.
addition,
their
phototrophic
nature,
high
photosynthetic
efficiency,
environmental
adaptability
make
them
an
attractive
source
biostimulants,
biofertilizers
biopesticides.
The
present
review
aims
describe
various
promoting
metabolites
produced
by
on
productivity.
Further,
elicited
biostimulants
with
respect
different
modes
applications
seed
treatments,
foliar
spray
soil/root
drenching
is
reviewed
detail.
ability
tolerance
against
abiotic
biotic
stressors
along
mechanism
action
discussed
paper.
Although
based
gaining
popularity,
nutrient
water
requirements
energy
intensive
downstream
processes
makes
technology
commercially
unsustainable.
Addressing
challenge,
we
propose
a
circular
economy
model
mediated
bioremediation
coupled
biorefinery
approaches
generating
value
biofertilizer
applications.
We
discuss
new
trends
enhancing
sustainability
production
co-cultivation
algae
hydroponics
utilization
effluents.
Frontiers in Environmental Science,
Год журнала:
2023,
Номер
11
Опубликована: Фев. 16, 2023
With
the
global
food
deficit
increasing
and
rising
climate
change
issues,
there
is
a
need
to
find
green
solutions
improve
soil
fertility
productivity
while
enhancing
biochemical
quality
reducing
ecological
impact
of
agriculture.
Biochar
potentially
cost-effective,
carbonaceous
resource
with
many
agricultural
environmental
applications.
As
amendment,
it
improves
physical
properties
increases
productivity—particularly
over
long-term—increasing
aggregation,
water
retention,
pH,
microbial
activities,
thus,
improving
overall
quality,
helping
reduce
chemical
fertilizer
needs
time.
The
extent
biochar’s
on
physiochemical
varies
depending
biochar
source,
type,
size,
inherent
characteristics,
cropping
system,
etc.
Moreover,
has
significant
potential
in
remediation,
especially
through
its
unique
adsorption
capable
capture
immobilize
pollutants
such
as
metal(loid)s,
organic
pollutants,
hazardous
emerging
contaminants
microplastics.
Further,
also
emerged
key
strategic,
cost-effective
material
tackle
issues
mitigation,
net
greenhouse
gas
emission
minimize
warming
potential.
However,
knowledge
gap
remains
understanding
long-term
persistence
agroecosystem,
optimal
application
rate
for
diversity
biochar-soil-crop-environmental
conditions,
interaction
carbon
stock,
specific
mechanisms
effect
biotic
properties,
quantification
sequestration,
emissions,
synergy
or
antagonistic
effects
other
sources
compost,
manure,
residues,
etc.,
modification
applications
associated
human
risks
long-term.
Further
research
needed
evaluate
impacts
types
sizes
recommend
suitable
practices
based
management
system.
Also,
be
finetuned
wider
target
pressing
pollution.
