Electrodialytic treatment for metal removal from sewage sludge ash from fluidized bed combustion

2010 ◽  
Vol 176 (1-3) ◽  
pp. 1073-1078 ◽  
Author(s):  
M. Pazos ◽  
G.M. Kirkelund ◽  
L.M. Ottosen
Keyword(s):  
Sewage Sludge ◽  
Fluidized Bed ◽  
Metal Removal ◽  
Fluidized Bed Combustion ◽  
Sewage Sludge Ash ◽  
Sludge Ash

Nanocrystalline and stacking-disordered β-cristobalite AlPO4: the now deciphered main constituent of a municipal sewage sludge ash from a full-scale incineration facility

2015 ◽  
Vol 30 (S1) ◽  
pp. S31-S35 ◽  
Author(s):  
B. Peplinski ◽  
C. Adam ◽  
B. Adamczyk ◽  
R. Müller ◽  
M. Michaelis ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fluidized Bed ◽  
Large Scale ◽  
Sodium Hydroxide Solution ◽  
Direct Proof ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Sewage Sludge Ash ◽  
X Ray ◽  
Sludge Ash

For the first time evidence is provided that a nanocrystalline and stacking-disordered, chemically stabilized β-cristobalite form of AlPO4 occurs in a sewage sludge ash (SSA). This proof is based on a combined X-ray powder diffraction and X-ray fluorescence investigation of an SSA produced at a large-scale fluidized bed incineration facility serving a catching area with a population of 2 million. The structural and chemical characterization was carried out on ‘as received’ SSA samples as well as on solid residues remaining after leaching this SSA in sodium hydroxide solution. Thus, it was ascertained that the observed nanocrystalline and stacking-disordered cristobalite-like component belongs to the aluminum phosphate component of this SSA, rather than to its silicon dioxide component. In addition, a direct proof is presented that the chemically stabilized β-cristobalite form of AlPO4 does crystallize from X-ray amorphous precursors under conditions that mimic the huge heating rate and short retention time (just seconds at T ≈ 850°C), typical for fluidized bed incinerators.

Sewage sludge ash to phosphorus fertiliser: Variables influencing heavy metal removal during thermochemical treatment

2008 ◽  
Vol 28 (12) ◽  
pp. 2709-2722 ◽  
Author(s):  
H. Mattenberger ◽  
G. Fraissler ◽  
T. Brunner ◽  
P. Herk ◽  
L. Hermann ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Thermochemical Treatment ◽  
Sewage Sludge Ash ◽  
Phosphorus Fertiliser ◽  
Sludge Ash
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