Related by context. Frequent words. (Click for all words.) 67 carbon sequestration 62 coal gasification 59 biomass 59 carbon capture 57 gasification 56 EOR 56 bioenergy 56 plasma gasification 54 underground coal gasification 54 CO2 53 biogenic 53 Switchgrass 53 renewable energy 52 EERC 52 geologic formations 52 biomass feedstock 52 methane hydrates 52 sequestration 52 sequester carbon 52 OTEC 51 coal liquefaction 51 sequestering carbon 51 Gasification 51 biofuels 51 biochar 51 biobutanol 51 bioleaching 51 woody biomass 51 biomass gasification 51 anaerobic digesters 50 Carbon Capture 50 methane 50 pyrolysis 50 shale 50 biorefinery 50 IGCC 50 Biomass 50 anaerobic digestion 49 Fischer Tropsch 49 biofuel 49 geothermal 49 alternative energies 49 nitrogen fixation 49 fossil fuel 49 algal 49 environmentally benign 49 desalinization 49 biomass feedstocks 49 gas hydrates 49 fossil fuels 49 coalbed methane 49 CAES 49 integrated gasification 49 coalbed methane CBM 49 Biochar 49 desalination 48 Hydrogen Economy 48 Albany Shale 48 hydrogen 48 syngas 48 oilseed crops 48 Nexterra 48 supercritical 48 hydrokinetic 48 shale gas 48 hydrocarbon 48 SOFC 48 GHG emission 48 lignite coal 48 renewables 48 Longannet 48 crop residues 48 extraction 47 carbon dioxide 47 feedstock 47 nitrous oxide emissions 47 cellulosic ethanol 47 coal 47 geological formations 47 hydrometallurgical 47 tar sands 47 BioOil 47 stover 47 evaporative 47 Shale Gas 47 renewable 47 greenhouse gas emission reductions 47 Syngas 47 biomethane 47 shale deposits 47 flue gas 47 windpower 47 corn stover 47 geo thermal 47 combustion 47 subsurface 47 solar photovoltaics 46 Cellulosic ethanol 46 Feasibility studies 46 denitrification 46 seawater desalination