Frontiers in Built Environment,
Год журнала:
2025,
Номер
10
Опубликована: Янв. 3, 2025
Coronavirus
disease
(COVID-19)
is
caused
by
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2).
In
indoor
environments,
a
structured
strategy
needed
to
reduce
the
risk
of
infection.
addition
maintaining
proper
ventilation
and
wearing
face
masks,
development
effective
technologies
for
limiting
transmission
SARS-CoV-2
through
infectious
particles
(IRPs)
has
been
studied.
UV-C
devices
have
already
proved
against
other
types
microorganisms
also
investigated
their
potential
in
inactivating
SARS-CoV-2.
This
work
aims
review
discuss
these
findings
while
presenting
recommendations
future
research.
Based
on
available
data,
be
inactivation
airborne
or
its
surrogates.
The
main
gaps
this
research
highlighted,
some
outlooks
studies
suggested.
studies,
use
surrogates
with
higher
susceptibility
than
consideration
total
bacterial
counts
alone
may
led
misleading
results.
question
“how
much
variables
affect
rate
environments?”
still
unsolved,
considering
that
number
virus
real
environments
quite
limited.
outcomes
study
can
useful
scientific
community,
technical
stakeholders
(e.g.,
managers
healthcare
transport
sectors),
common
people,
providing
important
information
about
performance
improve
quality
air
environments.
Energy Reports,
Год журнала:
2024,
Номер
11, С. 1412 - 1419
Опубликована: Янв. 15, 2024
Photocatalytic
oxidizing
(PCO)
air
cleaners
are
offered
for
the
abatement
of
gaseous
pollutants
(i.e.,
Volatile
Organic
Compounds
or
VOCs).
However,
due
to
a
lack
testing
standards,
overall
characterization
technology's
effectiveness
has
been
met
with
conflicting
results.
Different
studies
use
varying
experimental
setups,
test
conditions,
and
different
PCO
cleaner
designs.
According
literature,
majority
in
controlled
laboratory
setups
favorable
conditions.
As
is
scaled
up
more
realistic
environments
removal
efficiency
tends
significantly
decrease.
The
differences
can
be
attributed
set
recurring
factors
including
higher
flowrates
leading
less
resident
time
VOCs
under
reaction,
initial
concentrations
saturation
observed
photocatalysts,
variations
humidity
which
disrupts
VOC
oxidation,
reduction
UV
light
uniformity
larger
scale
applications.
Other
include
generation
byproducts
incomplete
oxidation
certain
inability
abate
VOCS
depending
on
PCO's
photocatalyst.
While
noticeable
advancements
have
made
design
devices,
general
opinion
regarding
technology
that
it
not
ready
home
use.
This
review
aims
bridge
gap
scalability
how
affects
commercialization.
addition
providing
roadmap
real-world
testing,
development,
related
it.
Buildings,
Год журнала:
2024,
Номер
14(11), С. 3639 - 3639
Опубликована: Ноя. 15, 2024
This
study
investigated
how
the
surface
characteristics
of
photocatalytic
cementitious
composites
influenced
effectiveness
air
purification
from
nitrogen
oxides
(NOx),
with
a
particular
focus
on
impact
coarse
aggregate
exposure
photoactive
surface.
Air
efficiency
tests
were
conducted
using
custom-developed
procedure
that
simulated
NOx
concentrations
and
UV
irradiance
typical
autumn
winter
conditions
in
Warsaw,
Poland.
The
findings
revealed
extent
exposed
significantly
affected
efficiency,
reducing
overall
NO
removal
rate
by
up
to
50%
compared
reference
value.
use
hydration
retarders
modified
cement
matrix,
enhancing
its
potential.
observed
decline
was
attributed
aggregate’s
limited
ability
retain
nanometric
photocatalyst
particles,
which
reduced
TiO2
content
composite’s
near-surface
layer.
Nevertheless,
incorporating
first-generation
exhibited
substantial
activity,
achieving
rates
340
µg/m2·h
for
non-exposed
variants
175
aggregate.
These
results
demonstrated
their
functionality
even
under
low-intensity
UV-A
irradiation
(1
W/m2),
making
them
suitable
environments
sunlight
exposure.
Hygiene and Environmental Health Advances,
Год журнала:
2022,
Номер
5, С. 100038 - 100038
Опубликована: Ноя. 19, 2022
Household
air
pollution
has
been
identified
as
a
global
threat
in
recent
decades.
The
partial
combustion
of
solid
fuel
is
leading
reason
for
indoor
middle-
and
low-income
countries
estimated
to
cause
around
3.5
million
death
per
year
globally.
Women
become
the
most
vulnerable
these
household
due
their
exceptional
physical
possessions
higher
exposure
duration.
current
study
aims
identify
possible
conditions
women.
starts
with
questionnaire
survey
assess
health-related
issues
distinguishing
women
further
sampling
pollutants
kitchen
area
different
homes
(n=10)
bifurcated
on
basis
nature
family.
Further,
concentration
obtained
was
utilized
health
risk
assessment
using
ICRP
MPPD
modelling
techniques.
trend
observed
shows
particulate
matter
joint
family
kitchens.
According
highest
deposition
determined
PM2.5
fraction
distributed
55.9%
head
region,
6.7%
tracheobronchial
region
37.2%
pulmonary
region.
lowest
PM0.5
(61.1%)
followed
by
region(21.45%)
(17.3%).
Precisely,
present
gives
clear
picture
about
lung
an
setting
specifically
Also,
it
throws
light
upon
sources
scenarios
regarding
prevailing
among
population.
Energies,
Год журнала:
2022,
Номер
15(19), С. 6961 - 6961
Опубликована: Сен. 22, 2022
Since
the
COVID-19
outbreak,
special
attention
has
been
paid
to
proper
ventilation
and
building
management
systems.
The
indoor
air
CO2
concentration
level
is
still
used
as
an
effective
indicator
evaluate
quality.
Many
different
sensors
have
appeared
on
market
in
last
two
years.
However,
calibration
procedures
guidance
installation
not
well
described
by
manufacturers.
research
method
based
a
review
of
technical
parameters.
practical
measurements
were
taken
using
sensors.
For
these
purposes
three
premises
selected.
It
was
found
that
measurement
failure
happened
residential
buildings
without
mechanical
ventilation.
Meanwhile,
ventilated
all
shown
similar
results
difference
between
located
zones
minimal.
Frontiers in Built Environment,
Год журнала:
2025,
Номер
10
Опубликована: Янв. 3, 2025
Coronavirus
disease
(COVID-19)
is
caused
by
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2).
In
indoor
environments,
a
structured
strategy
needed
to
reduce
the
risk
of
infection.
addition
maintaining
proper
ventilation
and
wearing
face
masks,
development
effective
technologies
for
limiting
transmission
SARS-CoV-2
through
infectious
particles
(IRPs)
has
been
studied.
UV-C
devices
have
already
proved
against
other
types
microorganisms
also
investigated
their
potential
in
inactivating
SARS-CoV-2.
This
work
aims
review
discuss
these
findings
while
presenting
recommendations
future
research.
Based
on
available
data,
be
inactivation
airborne
or
its
surrogates.
The
main
gaps
this
research
highlighted,
some
outlooks
studies
suggested.
studies,
use
surrogates
with
higher
susceptibility
than
consideration
total
bacterial
counts
alone
may
led
misleading
results.
question
“how
much
variables
affect
rate
environments?”
still
unsolved,
considering
that
number
virus
real
environments
quite
limited.
outcomes
study
can
useful
scientific
community,
technical
stakeholders
(e.g.,
managers
healthcare
transport
sectors),
common
people,
providing
important
information
about
performance
improve
quality
air
environments.
