Earth & Environmental Sciences
biofilm
63%
wastewater treatment
59%
savings
55%
chemical oxygen demand
52%
reactor
49%
membrane
48%
air
38%
cost
36%
energy
34%
nitrogen
25%
removal
22%
electrical power
18%
water reuse
16%
energy saving
15%
low flow
13%
airflow
13%
bubble
12%
activated sludge
12%
modeling
11%
ammonia
11%
fiber
10%
oxidation
9%
oxygen
9%
prediction
7%
parameter
4%
water
4%
Medicine & Life Sciences
Biological Oxygen Demand Analysis
100%
Waste Water
92%
Biofilms
69%
Air
57%
Membranes
42%
Nitrogen
42%
Cost Savings
32%
Costs and Cost Analysis
26%
Water
18%
Sewage
18%
Ammonia
16%
Oxygen
10%
Growth
7%
Engineering & Materials Science
Biofilms
95%
Wastewater treatment
82%
Chemical oxygen demand
80%
Membranes
59%
Nitrogen removal
45%
Air
38%
Costs
26%
Water
15%
Ammonia
15%
Nitrogen
13%
Oxidation
12%
Fluxes
11%
Oxygen
11%
Energy conservation
11%
Fibers
9%
Chemical Compounds
Chemical Oxygen Demand
82%
Wastewater Treatment
70%
Nitrogen
32%
Energy
16%
Ammonia
13%
Flow
11%
Reduction
8%
Oxidation Reaction
7%