sewage sludge, aerobic digestion (#2163)

ID-number#2163
Materialsewage sludge, aerobic digestion
Descriptionfine particulate brown
Classification ECN Phyllis classification ▸ sludge ▸ sewage ▸ sewage sludge, aerobic digestion
NTA 8003 classification ▸ [400] slib ▸ [410] zuiveringsslib RWZI
Submitter organisationECN (Netherlands)
Submission date2001-04-24
Remarkswater content from weight loss at 105°C; ash content calculated from content of remaining elements, assuming oxides; ash content may be underestimated as Si has not been determined
LiteratureFont,R.; Fullana,A.; Conesa,J.A.; Llavador,F.: Analysis of the pyrolysis and combustion of different sewage sludges by TG. J. Anal. Appl. Pyrolysis 58-59 (2001) 927-941.

Values

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

Fuel Properties

Proximate Analysis

Moisture content wt% 83.90
Ash content wt% 3.25 20.20

Ultimate Analysis

Carbon wt% 5.68 35.30 44.24 Measured
Hydrogen wt% 0.89 5.50 6.89 Measured
Nitrogen wt% 1.00 6.20 7.77 Measured
Sulphur wt% 0.48 3.00 3.76 Measured
Oxygen wt% 4.80 29.80 37.34 Calculated
Total (with halides) wt% 100.00 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 0.35 14.90 18.67
Gross calorific value (HHV) MJ/kg 2.59 16.10 20.18
HHVMilne MJ/kg 2.41 14.95 18.73 Calculated

Chemical Analyses

Major elements

Aluminium (Al) mg/kg (dry) 9 300.0 Measured
Potassium (K) mg/kg (dry) 1 500.0 Measured
Sodium (Na) mg/kg (dry) 5 100.0 Measured
Calcium (Ca) mg/kg (dry) 33 000.0 Measured
Magnesium (Mg) mg/kg (dry) 3 100.0 Measured
Iron (Fe) mg/kg (dry) 49 000.0 Measured

Minor elements

Chromium (Cr) mg/kg (dry) 34 000.0 Measured
Copper (Cu) mg/kg (dry) 100.0 Measured
Manganese (Mn) mg/kg (dry) 400.0 Measured
Nickel (Ni) mg/kg (dry) 600.0 Measured
Lead (Pb) mg/kg (dry) 1 400.0 Measured
Zinc (Zn) mg/kg (dry) 800.0 Measured
Barium (Ba) mg/kg (dry) 100.0 Measured

Other elements

Strontium (Sr) mg/kg (dry) 300.0 Measured
Boron (B) mg/kg (dry) 100.0 Measured