SSRN Electronic Journal,
Год журнала:
2022,
Номер
unknown
Опубликована: Янв. 1, 2022
The
accumulation
of
poly
aluminum
chloride
(PAC)
in
dewatered
waste
activated
sludge
(WAS)
can
significantly
reduce
the
production
volatile
fatty
acids
(VFAs)
from
anaerobic
fermentation.
This
study
aims
to
explore
a
new
method
promote
VFA
by
relieving
inhibitory
effect
on
fermentation
WAS.
Herein,
combination
lysozyme
and
sodium
citrate
pretreatment
was
applied
stabilize
accelerate
solubilization
hydrolysis
efficiently
complexed
citrate,
which
is
conducive
inhibition
lysozymes
other
extracellular
hydrolases.
1.86,
1.72,
1.15
times
lysozyme,
protease,
α-glucosidase
activities,
respectively,
were
obtained
after
compared
control
group.
Moreover,
treatment
caused
greater
cell
lysis
attributed
dissolution
EPS
induced
as
surfactant.
As
result,
WAS
enhanced.
129.71
mg/g
VSS
soluble
proteins
26.3
polysaccharides
within
4
hours,
together
with
degradation
124%
more
75%
3
days,
providing
adequate
substrates
for
production.
4884
mg
COD/L
total
VFAs
6-day
following
pretreatment,
7.3
higher
than
that
provides
novel
approach
enhancing
containing
PAC,
contributes
promoting
carbon
source
recovery
solid
wastes.
