Gwyddorau Amgylcheddol a’r Ddaear
anaerobic digestion
100%
biotechnology
92%
odor
84%
compliance
76%
catalyst
75%
monitoring
53%
ammonia
50%
ketone
48%
organic waste
41%
degradation
41%
spectrometry
41%
ion
39%
gas chromatography
38%
crop improvement
29%
parameter
29%
chemical
28%
terpene
27%
agricultural waste
25%
sulfur compound
24%
municipal waste
23%
soil improvement
22%
energy production
21%
industrial waste
21%
circular economy
21%
policy development
20%
biogas
20%
energy storage
20%
valorization
20%
alcohol
19%
commercialization
19%
bioenergy
18%
dilution
18%
evaluation
18%
incubation
17%
vessel
17%
analysis
16%
carbon emission
16%
emission reduction
16%
environmental impact
16%
sulfide
16%
combustion
16%
fatty acid
15%
rural area
15%
fertilizer
14%
Europe
14%
measuring
14%
alga
13%
recycling
13%
polymer
12%
sustainability
12%