sewage sludge (#1525)

ID-number#1525
Materialsewage sludge
Classification ECN Phyllis classification ▸ sludge ▸ sewage ▸ sewage sludge
NTA 8003 classification ▸ [400] slib ▸ [410] zuiveringsslib RWZI
Submitter organisationECN (Netherlands)
Submission date1999-07-07
RemarksSludge from UK; content of Al, Ca, Fe, K, Mg, Na, P, Si, Ti calculated from ash, neglecting volatization
LiteratureJ. M. Bemtgen, K. R. G. Hein and A. J. Minchener: Co-gasification of coal/biomass and coal/waste mixtures; volume III final reports; EC research project APAS contract COAL-CT92-0001, Stuttgart, Clean Coal Technology Programme, ISBN 3-928123-15-7 (1994).

Values

Property Unit Value Std dev Det lim Lab Date Method Remarks
ar dry daf

Fuel Properties

Proximate Analysis

Moisture content wt% 5.40
Ash content wt% 40.02 42.30
Volatile matter wt% 46.26 48.90 84.75
Fixed carbon wt% 8.32 8.80 15.25 Calculated

Ultimate Analysis

Carbon wt% 29.52 31.20 54.07 Measured
Hydrogen wt% 4.54 4.80 8.32 Measured
Nitrogen wt% 3.12 3.30 5.72 Measured
Sulphur wt% 0.95 1.00 1.73 Measured
Oxygen wt% 16.37 17.30 29.98 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 11.81 12.63 21.88
Gross calorific value (HHV) MJ/kg 12.94 13.67 23.70
HHVMilne MJ/kg 13.44 14.21 24.62 Calculated

Chemical Analyses

Halides

Chlorine (Cl) mg/kg 946.0 1 000.0 1 733.1 Measured

Major elements

Aluminium (Al) mg/kg (dry) 34 500.0 Calculated
Potassium (K) mg/kg (dry) 6 500.0 Calculated
Sodium (Na) mg/kg (dry) 1 400.0 Calculated
Calcium (Ca) mg/kg (dry) 72 500.0 Calculated
Silicon (Si) mg/kg (dry) 83 000.0 Calculated
Magnesium (Mg) mg/kg (dry) 8 500.0 Calculated
Iron (Fe) mg/kg (dry) 16 000.0 Calculated
Phosphorus (P) mg/kg (dry) 21 000.0 Calculated
Titanium (Ti) mg/kg (dry) 4 800.0 Calculated

Minor elements

Arsenic (As) mg/kg (dry) 9.5 Measured
Cadmium (Cd) mg/kg (dry) 6.3 Measured
Cobalt (Co) mg/kg (dry) 9.5 Measured
Chromium (Cr) mg/kg (dry) 474.0 Measured
Copper (Cu) mg/kg (dry) 576.0 Measured
Manganese (Mn) mg/kg (dry) 238.0 Measured
Nickel (Ni) mg/kg (dry) 57.0 Measured
Lead (Pb) mg/kg (dry) 416.0 Measured
Vanadium (V) mg/kg (dry) 34.0 Measured
Zinc (Zn) mg/kg (dry) 1 008.0 Measured
Barium (Ba) mg/kg (dry) 829.0 Measured
Molybdenium (Mo) mg/kg (dry) 9.5 Measured
Selenium (Se) mg/kg (dry) 2.1 Measured
Mercury (Hg) mg/kg (dry) 6.3 Measured

Other elements

Boron (B) mg/kg (dry) 100.0 Measured

Physical Properties

Ash melting behaviour

American standard method, measured in oxidizing conditions

IDT (initial deformation temperature) °C 1 150
HT (hemispherical temperature) °C 1 210
FT (fluid temperature) °C 1 270

Ash Properties

Ash composition

P2O5 wt% (ash) 9.80
SiO2 wt% (ash) 36.50
Fe2O3 wt% (ash) 5.40
Al2O3 wt% (ash) 13.30
CaO wt% (ash) 20.80
MgO wt% (ash) 2.90
Na2O wt% (ash) 0.50
K2O wt% (ash) 1.60
TiO2 wt% (ash) 1.30