Engineering & Materials Science
Sewage sludge
100%
Refuse incinerators
90%
Phosphorus
81%
Recovery
45%
Impurities
16%
Characterization (materials science)
9%
Biosolids
9%
Soils
8%
Availability
8%
Land fill
6%
Waste disposal
6%
Chemical properties
6%
European Union
6%
Wastewater
6%
Byproducts
5%
Earth & Environmental Sciences
incinerator
78%
sewage sludge
64%
ash
55%
phosphorus
48%
land
37%
pollutant
10%
biosolid
6%
crop production
6%
food production
5%
European Union
5%
landfill
4%
chemical property
4%
byproduct
4%
soil
4%
regulation
3%
food
3%
wastewater
3%
history
3%
effect
1%
method
1%
Medicine & Life Sciences
Sewage
86%
Phosphorus
72%
Soil
6%
Biosolids
5%
Crop Production
5%
Waste Disposal Facilities
4%
Food
3%
Waste Water
3%
European Union
3%
Formal Social Control
2%
History
2%
Chemical Compounds
Phosphorus(.)
56%
Soil
38%
Food
32%
Application
21%
Amount
19%
Wastewater
18%
Social Sciences
sewage
93%
food
7%
European Union
4%
regulation
3%
history
3%