Earth & Environmental Sciences
fruit
100%
anaerobic digestion
98%
pulp
94%
substrate
67%
biogas
58%
energy recovery
57%
hydrogen
38%
sugar
29%
methane
22%
gas production
19%
acidification
19%
fermentation
18%
microbial community
16%
beverage industry
15%
energy
14%
reactor
13%
organic matter
13%
type of waste
12%
food industry
11%
bioenergy
11%
digester
10%
seasonality
9%
principal component analysis
8%
organic carbon
7%
effluent
6%
effect
6%
consumption
6%
productivity
6%
water quality
6%
degradation
6%
bacterium
6%
industry
6%
Agriculture & Biology
energy recovery
70%
fruit pulp
61%
anaerobic digestion
57%
hydrogen production
56%
biogas
53%
methane
48%
gas production (biological)
28%
clean energy
19%
juice industry
18%
anaerobic digesters
17%
energy
14%
fruit juices
13%
acidification
12%
sugar content
11%
feedstocks
11%
hydrogen
11%
organic matter
11%
fermentation
8%
Engineering & Materials Science
Anaerobic digestion
64%
Fruits
57%
Biogas
57%
Hydrogen production
55%
Pulp
53%
Substrates
34%
Recovery
33%
Chemical analysis
25%
Fruit juices
17%
Acidification
14%
Biological materials
13%
Sugars
12%
Gases
11%
Fermentation
11%
Feedstocks
9%
Methane
9%
Industry
8%
Hydrogen
7%
