Chemosphere,
Journal Year:
2024,
Volume and Issue:
354, P. 141700 - 141700
Published: March 13, 2024
Wastewater
treatment
plants
play
a
crucial
role
in
water
security
and
sanitation,
ensuring
ecosystems
balance
avoiding
significant
negative
effects
on
humans
environment.
However,
they
determine
also
pressures,
including
greenhouse
gas
odourous
emissions,
which
should
be
minimized
to
mitigate
climate
changes
besides
complaints.
The
research
has
been
focused
the
validation
of
an
innovative
integrated
biological
system
for
sustainable
complex
gaseous
emissions
from
wastewater
plants.
proposed
consists
moving
bed
biofilm
reactor
coupled
with
algal
photobioreactor,
dual
objective
of:
i)
reducing
inlet
concentration
contaminants
(in
this
case,
hydrogen
sulphide,
toluene
p-xylene);
ii)
capturing
converting
carbon
dioxide
produced
by
degradation
process
into
exploitable
biomass.
first
promoted
chemical
compounds
up
99.57%
load
(IL)
22.97
g
m−3
d−1
while
second
allowed
capture
CO2
resulting
compounds,
biofixation
rate
81.55%.
absorbed
was
converted
valuable
feedstocks,
maximum
biomass
productivity
aPBR
0.22
L−1
d−1.
Dairy
used
as
alternative
nutrient
source
both
reactors,
view
reusing
cultivating
biomass,
framing
technology
context
biorefinery
within
circular
economy
perspective.
photobioreactor
indeed
characterized
high
lipid
content,
percentage
lipids
per
dry
weight
35%.
can
therefore
exploited
production
clean
energy
carrier.
biotechnology
represents
effective
tool
shifiting
conventional
neutral
platform
implementing
principles
ecological
transition
achieving
levels
environmental
protection.
RSC Advances,
Journal Year:
2022,
Volume and Issue:
12(47), P. 30365 - 30380
Published: Jan. 1, 2022
The
application
of
nickel
complexes
nicotinic
acid
hydrazide
ligand
as
a
potential
gas-sensor
and
adsorbent
material
for
H2S
gas
was
examined
using
appropriate
density
functional
theory
(DFT)
calculations
with
the
ωB97XD/Gen/6-311++G(d,p)/LanL2DZ
method.
FT-IR
spectrum
synthesized
exhibited
medium
band
at
3178
cm-1
attributed
to
ν(NH)
stretching
vibrations
strong
bands
1657
1600
corresponding
presence
ν(C[double
bond,
length
m-dash]O)
m-dash]N)
vibration
modes.
In
nickel(ii)
complex,
experience
negative
shifts
1605
1580
cm-1,
respectively,
compared
ligand.
This
indicates
coordination
carbonyl
oxygen
azomethine
nitrogen
atoms
Ni2+
ion.
Thus,
sensing
mechanism
indicated
short
recovery
time
that
work
function
value
increases
all
complexes,
necessitating
an
excellent
sensor
material.
profound
assertion
given
complex
surfaces
very
dense
stability
regards
their
relevant
binding
energies
various
existing
studies.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
893, P. 164689 - 164689
Published: June 12, 2023
Hydrogen
sulphide
(H2S)
removal
from
biogas
is
of
high
relevance
as
it
damages
combustion
engines
used
for
heat
and
power
generation
causes
adverse
public
health
environmental
effects.
Biological
processes
have
been
reported
a
cost-effective
promising
approach
to
desulfurize
biogas.
This
review
presents
detailed
description
the
biochemical
foundations
metabolic
apparatus
H2S
oxidizing
bacteria,
namely
chemolithoautotrophs
anoxygenic
photoautotrophs.
The
focuses
on
current
future
applications
biological
desulfurization
provides
insights
into
their
mechanism
main
factors
influencing
performance.
advantages,
drawbacks,
limitations,
technical
improvements
biotechnological
currently
based
chemolithoautotrophic
organisms
are
covered
extensively.
Recent
advances,
sustainability
economical
aspects
also
discussed.
Anoxygenic
photoautotrophic-bacteria-based
photobioreactors
were
herein
identified
useful
tools
improve
safety
desulfurization.
addresses
gaps
in
existing
studies
concerning
selection
most
suitable
techniques,
benefits
consequences.
research
all
stakeholders
involved
management
optimization
its
findings
directly
applicable
development
new
sustainable
technologies
upgrading
waste
treatment
plants.
