Related by context. Frequent words. (Click for all words.) 61 carbon sequestration 52 carbon capture 52 sequester 47 sequestering 45 coal gasification 45 sequester carbon 44 gasification 43 methane 43 biochar 43 CO2 42 carbon dioxide 42 EOR 41 acidification 41 soils 41 geological formations 41 extraction 41 biomass 41 bioenergy 40 coalbed methane 40 carbon sinks 40 flue gas 39 coal 39 GHG 39 combustion 39 carbon dioxide CO2 39 Carbon Capture 39 carbon credits 39 geo thermal 39 GHGs 39 coal gasification plant 39 neutralization 38 greenhouse gas 38 woody biomass 38 incineration 38 bioremediation 38 coal seams 38 IGCC 38 pyrolysis 38 mitigation 38 quantification 38 coal fired 37 greenhouse gas emission 37 SO2 37 gas hydrates 37 geothermal 37 emission reduction 37 peatlands 37 corn stover 37 reforestation 37 emission reductions 37 anaerobic digestion 37 crop residue 36 adsorption 36 reclamation 36 lignite 36 Gasification 36 recoverable 36 renewable energy 36 catalysis 36 depletion 36 biofuels 36 croplands 36 nitrogen fertilizers 36 soil fertility 36 synthetic fuels 36 waste incineration 36 greenhouse gasses 36 soil erosion 36 dewatering 36 CDM 35 afforestation 35 peatland 35 hydrocarbon 35 biodiversity conservation 35 mineral extraction 35 renewables 35 atmospheric CO2 35 tillage 35 UCG 35 sequestered 35 Biomass 35 tar sands 35 emitters 35 greenhouse gases 35 coal mining 35 coal slurry 35 sulfur dioxide emissions 35 tailings 35 geoengineering 35 bed methane 34 solar thermal 34 EU ETS 34 expropriation 34 coal combustion 34 joinder 34 hydrocarbons 34 shales 34 biomass gasification 34 minimization 34 CCS 34 carbon