Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(7), P. 803 - 803
Published: July 4, 2024
Volatile
organic
compounds
(VOCs)
pose
significant
risks
to
human
health
and
environmental
quality,
prompting
stringent
regulations
on
their
emissions
from
various
industrial
processes.
Among
VOCs,
d-limonene
stands
out
due
its
low
threshold
contribution
malodorous
emissions.
While
biofiltration
presents
a
promising
approach
for
VOC
removal,
including
d-limonene,
comprehensive
understanding
of
performance
kinetics
is
lacking.
This
study
aims
comprehensively
assess
the
lab-scale
biotrickling
filter
in
treating
gas-phase
d-limonene.
The
experimental
results
indicate
that
efficiently
removed
achieving
critical
loading
rate
19.4
g
m−3
h−1
maximum
elimination
capacity
31.8
(correspondingly,
up
85%
removal)
at
condition
94.2
s
EBRT.
Microbial
activity
played
role
performance,
with
strong
linear
correlation
being
observed
between
CO2
production
substrate
consumption.
Michaelis–Menten
model
was
employed
represent
enzyme-catalyzed
reactions,
suggesting
no
inhibition
during
operation.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(18), P. 4431 - 4431
Published: Sept. 18, 2024
The
removal
of
benzene,
toluene,
ethylbenzene,
and
xylene
(BTEX)
from
air
was
investigated
in
two
similar
biotrickling
filters
(BTFs)
packed
with
polyurethane
(PU)
foam,
differing
terms
inoculation
procedure
(BTF
A
pre-incubated
PU
discs,
BTF
B
inoculated
via
the
continuous
recirculation
a
liquid
inoculum).
effects
white
rot
fungi
enzyme
extract
addition
system
responses
to
variable
VOC
loading,
trickling
patterns,
pH
were
studied.
Positive
both
packing
incubation
on
filtration
performance
identified.
BFF
exhibited
shorter
start-up
period
(approximately
20
days)
lower
pressure
drop
(75
±
6
mm
H
Journal of Environmental Management,
Journal Year:
2024,
Volume and Issue:
370, P. 122874 - 122874
Published: Oct. 13, 2024
The
emission
of
hydrophobic
Volatile
Organic
Compounds
(VOCs)
is
a
serious
environmental
issue.
Typically,
biofilters
(BFs)
are
employed
for
their
treatment,
with
the
potential
enhancement
mass
transfer
through
addition
surfactants.
However,
disparate
results
in
previous
studies
have
been
observed,
attributed
to
uncontrolled
conditions
during
introduction
surfactants
BFs.
Additionally,
there
has
limited
exploration
microbial
consortium
adaptation
To
address
these
gaps,
this
study
followed
two
approaches.
First,
long-term
(247
days)
removal
cyclohexane
was
studied
stirred
tank
bioreactor
(STBR)
inoculated
Rhodococcus
erythropolys
E1
and
using
Tween
80
at
three
times
critical
micelle
concentration
(CMC).
Second,
short-term
(9
impact
(bio)surfactants
[Tween
(1
×
CMC)
Quillaja
Saponin
(QS,
1
CMC)]
on
cyclohexane,
hexane
toluene
investigated
batch
tests
types
inocula:
pure
culture
(X
