Characterizing biofilm thickness, density, and microbial community composition in a full-scale hybrid membrane aerated biofilm reactor
Bioresource Technology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 132207 - 132207
Published: Feb. 1, 2025
This
study
examined
biofilm
thickness,
density,
and
microbial
composition
in
a
full-scale
MABR
treating
municipal
wastewater,
focusing
on
their
spatial
operational
variability.
The
cassette
arrangement
created
thickness
gradient,
with
biofilms
the
front
cassettes
more
than
twice
as
thick
those
at
back.
Lower
scouring
intensity
due
to
reduced
airflow
resulted
thicker
biofilms.
Microbial
communities
varied
longitudinally
by
phase,
having
higher
relative
abundance
of
anaerobic
microorganisms,
such
fermenters
sulfur
reducers,
fewer
aerobic
nitrifiers.
Nitrosomonas
were
main
ammonia
oxidizers,
while
Nitrospira
Ca.
Nitrotoga
dominated
nitrite
oxidizers.
16S
RNA
gene
profiles
showed
strong
correlations
(R2
=
0.8)
nitrification
rates
0.4).
Full-scale
characteristics
have
not
been
studied
before.
Study
findings
practical
implications
for
better
modeling
practices
improved
design
future
facilities.
Language: Английский
Comammox Nitrospira dominates the nitrifying bacterial community in the external canister biofilter in the tank fish farm
Journal of Water Process Engineering,
Journal Year:
2025,
Volume and Issue:
72, P. 107494 - 107494
Published: March 20, 2025
Language: Английский
Importance of biofilms in water quality management in aquaculture systems—a review
Aquaculture International,
Journal Year:
2025,
Volume and Issue:
33(4)
Published: April 3, 2025
Language: Английский
Network of Nitrifying Bacteria in Aquarium Biofilters: An Unfaltering Cooperation Between Comammox Nitrospira and Ammonia-Oxidizing Archaea
Water,
Journal Year:
2024,
Volume and Issue:
17(1), P. 52 - 52
Published: Dec. 28, 2024
Nitrification
plays
a
crucial
role
in
aquatic
ecosystems
and
the
biofilters
used
fish
farms.
Despite
their
importance,
of
canonical
nitrifiers,
comammox
bacteria,
archaea
has
not
yet
been
sufficiently
investigated.
The
aim
this
study
was
to
characterize
microbiome
external
canister
biofilter
freshwater
aquarium,
with
particular
focus
on
Nitrospira
competition
other
nitrifiers.
To
achieve
this,
comprehensive
approach
combining
metagenome
sequencing
co-occurrence
network
analysis
interactions
between
microorganisms
portable
biofilter.
were
subjected
changing
feeding
regime
that
affected
ecological
relationships
abundance
different
microbial
taxa.
results
showed
presence
two
types
nitrifiers
biofilter:
ammonia-oxidizing
(AOA).
Five
genomes
reconstructed,
clade
B
being
most
abundant
an
average
7.8
±
0.4%.
In
addition,
families
identified:
Nitrosopumilaceae
Nitrososphaeraceae,
4.3
Heterotrophs
also
bacterial
community,
particularly
genera
Actinomycetota,
Planctomycetota,
Pseudomonadota.
Network
indicated
competitive
heterotrophs,
whereas
no
observed
AOA.
predominance
Nitrospira,
AOA
over
emphasizes
better
adaptation
oligotrophic
environments.
This
highlights
importance
within
interaction
networks,
which
can
contribute
optimization
water
purification
systems
RASs.
Language: Английский