Durability and heavy metals long-term stability of alkali-activated sintered municipal solid waste incineration fly ash concrete in acidic environments
Construction and Building Materials,
Год журнала:
2025,
Номер
462, С. 139990 - 139990
Опубликована: Янв. 16, 2025
Язык: Английский
Dispersion and stability evaluation of water-washed MSWI fly ash under mechanochemical treatment
Construction and Building Materials,
Год журнала:
2025,
Номер
465, С. 140210 - 140210
Опубликована: Янв. 31, 2025
Язык: Английский
Role of biochar in enhancing the performance of low-carbon MSWI fly ash/bottom ash-based cementitious materials: Harmful component adsorption and mechanisms
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162438 - 162438
Опубликована: Апрель 1, 2025
Язык: Английский
Preparation of Ceramsite from Heavy Metal Contained Municipal Solid Waste Incineration Fly Ash Synergistically with Silicon/Aluminum-containing Waste
Journal of Hazardous Materials Advances,
Год журнала:
2025,
Номер
unknown, С. 100725 - 100725
Опубликована: Апрель 1, 2025
Язык: Английский
Double Benefits Achieved in the Cosintering of Incineration Fly Ash and Heavy-Metals-Enriched Wastes: Valuable Metals Recovery and Calcium Aluminate (Chloro-Sulfur) Phases-Dominant High Cementitious Byproduct
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
Язык: Английский
Utilization of Municipal Solid Waste Incineration (MSWIFA) in Geopolymer Concrete: A Study on Compressive Strength and Leaching Characteristics
Materials,
Год журнала:
2024,
Номер
17(18), С. 4609 - 4609
Опубликована: Сен. 20, 2024
This
study
explores
the
utilization
of
municipal
solid
waste
incineration
fly
ash
(MSWIFA)
in
geopolymer
concrete,
focusing
on
compressive
strength
and
heavy
metal
leachability.
MSWIFA
was
sourced
from
a
Shenzhen
plant
pretreated
by
washing
to
remove
soluble
salts.
Geopolymer
concrete
prepared
incorporate
with
washed
or
unwashed
tested
under
different
pH
conditions
(2.88,
4.20,
10.0).
Optimal
achieved
Si/Al
ratio
1.5,
water/Na
10,
sand-binder
0.6.
The
pretreatment
significantly
enhanced
strength,
particularly
alkaline
conditions,
GP-WFA
(washed
MSWIFA)
exhibiting
49.6%
increase
compared
21.3%
GP-FA
(unwashed
MSWIFA).
Additionally,
GP-WFA’s
reached
41.7
MPa,
comparable
that
control
(GP-control)
at
43.7
MPa.
Leaching
tests
showed
acidic
(pH
2.88)
promoted
leaching,
which
increased
over
leaching
time,
while
an
environment
reduced
leachability
metals.
These
findings
highlight
potential
using
promoting
sustainable
construction
practices,
conditions.
Язык: Английский
Combining Activated Carbon Adsorption and CO2 Carbonation to Treat Fly Ash Washing Wastewater and Recover High-Purity Calcium Carbonate
Water,
Год журнала:
2024,
Номер
16(20), С. 2896 - 2896
Опубликована: Окт. 12, 2024
Fly
ash
washing
wastewater
was
carbonated
with
carbon
dioxide
(CO2)
to
remove
calcium
(Ca)
by
forming
a
carbonate
(CaCO3)
precipitate.
An
investigation
of
the
factors
affecting
carbonation
showed
that
Ca
removal
highly
dependent
on
initial
pH
wastewater.
The
10%,
61%,
91%
and
more
than
99%
at
levels
11.8,
12.0,
12.5
13.0,
respectively.
optimal
conditions
for
were
time
30
min
CO2
flow
rate
mL/min.
concentration
in
decreased
<40
mg/L,
while
73
g
CaCO3
precipitate
produced
per
liter
However,
heavy
metals,
specifically
Pb
Zn,
co-precipitated
during
carbonation,
which
resulted
product
contained
as
much
0.61
wt%
0.02
Zn.
Activated
modified
quaternary
ammonium
salt
used
selectively
adsorb
Zn
first.
Pb-
Zn-free
water
then
carbonated.
By
combining
adsorption
treated
about
28
Na,
Cl
K
retained.
thus
ready
NaCl
KCl
recovery.
In
addition,
had
content
38
almost
no
metals.
average
particle
size
47
μm,
uniform
cubic
shape.
quality
met
requirements
industrial
reuse
CaCO3.
summary,
combined
able
pollutants
from
recovering
useful
resources.
Язык: Английский