Earth & Environmental Sciences
bioenergy production
87%
liquid waste
77%
municipal solid waste
62%
combustion
49%
landfill gas
41%
energy recovery
37%
municipal waste
36%
waste treatment
35%
gasification
33%
industrialization
33%
anaerobic digestion
31%
research and development
31%
population growth
29%
management practice
29%
waste management
29%
pyrolysis
28%
electricity
28%
wastewater treatment
27%
alga
26%
urbanization
26%
recycling
25%
sustainability
24%
wastewater
21%
liquid
19%
need
17%
material
13%
Engineering & Materials Science
Bioproducts
100%
Waste utilization
92%
Municipal solid waste
84%
Waste treatment
45%
Algae
44%
Liquids
43%
Anaerobic digestion
42%
Waste management
39%
Land fill
38%
Wastewater treatment
37%
Wastewater
34%
Gasification
32%
Recycling
31%
Pyrolysis
30%
Sustainable development
28%
Electricity
23%
Recovery
21%
Gases
18%
Hot Temperature
15%
Chemical Compounds
Waste Management
90%
Solid Waste
79%
Gasification
74%
Electricity
71%
Wastewater Treatment
63%
Recycling
58%
Fuel
53%
Wastewater
51%
Heat
47%
Pyrolysis
44%
Liquid
34%
Gas
34%