Skip to Main Content
Table 3

Ultimate and proximate analysis of feces, fecal sludge, and sewage sludge

OriginBoulder
Fecal sludgea
Sewage sludgeb
Sample IDFeces12KampalaDakar
Proximate analysis (%ds) 
 Fixed carbon 10.2 6.2 0.4   11.8 ± 6.6 
 Volatile matter 74.2 42.7 61.1   58.5 ± 5.0 
Ultimate analysis (%ds) 
 Carbon 49.7 27.1 37 27.8 ± 3.1 28.8 ± 3.4 30.5 ± 3.7 
 Oxygen 22.4 14.8 15.8   30.1 ± 6.6 
 Hydrogen 6.2 3.5 4.9 4.2 ± 0.5 4.2 ± 0.4 6.3 ± 0.7 
 Nitrogen 2.5 2.9 3.2 ± 0.4 3.0 ± 0.6 7.0 ± 1.7 
 Sulfur 0.9 0.8 0.8 0.7 ± 0.1 1.7 ± 0.0 1.8 ± 0.7 
OriginBoulder
Fecal sludgea
Sewage sludgeb
Sample IDFeces12KampalaDakar
Proximate analysis (%ds) 
 Fixed carbon 10.2 6.2 0.4   11.8 ± 6.6 
 Volatile matter 74.2 42.7 61.1   58.5 ± 5.0 
Ultimate analysis (%ds) 
 Carbon 49.7 27.1 37 27.8 ± 3.1 28.8 ± 3.4 30.5 ± 3.7 
 Oxygen 22.4 14.8 15.8   30.1 ± 6.6 
 Hydrogen 6.2 3.5 4.9 4.2 ± 0.5 4.2 ± 0.4 6.3 ± 0.7 
 Nitrogen 2.5 2.9 3.2 ± 0.4 3.0 ± 0.6 7.0 ± 1.7 
 Sulfur 0.9 0.8 0.8 0.7 ± 0.1 1.7 ± 0.0 1.8 ± 0.7 

Elemental composition is reported as mass percent of dry solids (%ds). N = 1 for data in this study; n = 38–47 for sewage sludge. Literature data from aGold et al. (2017), bPhyllis2 database.

Close Modal

or Create an Account

Close Modal
Close Modal