IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 30, 2024
This
chapter
deals
with
the
treatment
and
management
of
sludge
resulting
from
wastewater
using
membrane
bioreactor
(MBR)
technology.
With
increase
in
world
population
industrial
activities,
demand
for
effective
has
increased,
generating
significant
amounts
sludge.
Although
MBR
technology
is
more
efficient
terms
effluent
quality,
it
produces
different
rheological
morphological
characteristics
than
conventional
activated
discusses
various
methods
treating
sludge,
including
stabilization,
dewatering,
thermal
treatment,
which
are
essential
improving
quality
reducing
disposal
costs.
It
also
examines
potential
reuse
agriculture,
highlighting
such
as
composting
pelletization
sustainable
approaches.
These
not
only
mitigate
environmental
impacts
but
contribute
to
a
circular
economy
by
converting
waste
into
valuable
resources.
The
concludes
importance
proper
ensure
compliance
regulations
fully
utilize
resource.
Energies,
Journal Year:
2025,
Volume and Issue:
18(3), P. 731 - 731
Published: Feb. 5, 2025
Peracetic
acid
(PAA)
oxidation,
which
is
a
kind
of
chemical
method
for
sludge
pretreatment,
has
been
verified
to
be
valid
promoting
anaerobic
digestion
performance.
However,
the
methane
production
still
limited
at
certain
levels
by
this
method,
because
excess
PAA
negative
effects
on
methanogens.
This
work
selected
freezing
combined
with
form
composite
pretreatment
technology
synergistically
improving
biomethane
production.
According
experimental
data,
yield
was
largely
enhanced
from
166.4
±
5.6
mL/g
volatile
suspended
solids
(VSS)
in
control
261.5
7.3
VSS
(−10
°C)
and
(0.08
g/g
TSS)
57.2%
increase
rate.
Kinetic
analysis
showed
that
potential,
rate,
hydrolysis
rate
were
promoted,
respectively,
159.4
VSS,
17.18
VSS/d,
0.104
d−1
254.9
25.69
0.125
+
pretreatment.
Mechanism
revealed
destroyed
both
extracellular
polymeric
substances
(EPS)
microbial
cells
sludge,
resulting
efficiency.
Gene
hydrolytic
microbes
(Hyphomicrobium
norank_f_Caldilineaceae),
acidogens
(e.g.,
Petrimonas,
Tissierella,
Mycobacerium)
methanogens
(Methanosaeta,
Methanosarcina,
Methanobacterium)
all
enriched
total
abundances
calculated
10.65%
22.07%
pretreated
reactors,
respectively.
Considering
technical
economic
factors,
feasible
Catalysts,
Journal Year:
2025,
Volume and Issue:
15(5), P. 410 - 410
Published: April 23, 2025
The
residual
emerging
pollutants
in
secondary
effluent
from
a
chemical
industry
park
contain
potential
risks
for
natural
waters.
Herein,
the
cobalt
ferrite/peracetic
acid
system
was
employed
to
destroy
aniline,
typical
pollutant,
with
reaction
rate
of
0.0147
min−1
at
pH
7.0.
Singlet
oxygen
(1O2)
served
as
predominant
reactive
species
aniline
degradation,
superoxide
radicals
(O2−)
and
organic
(R-O)
acting
roles.
valence
transition
between
Co(II)
Co(III)
on
CoFe2O4
surface
played
determining
role
progression.
presence
anions
humic
acids
low
concentrations
had
minimal
impact
removal.
Additionally,
catalyst
demonstrated
excellent
recyclability,
maintaining
pollutant
removal
above
93%
over
five
consecutive
cycles.
Lastly,
CoFe2O4/PAA
demonstrates
effective
treatment
pollutants,
including
phenolic
compounds,
pesticides,
antibiotics,
dyes,
achieving
rates
77.48%
99.99%.
Furthermore,
it
significantly
enhances
water
quality
actual
effluent,
offering
novel
theoretical
foundation
practical
insights
applying
this
catalytic
wastewater
treatment.
