Related by context. Frequent words. (Click for all words.) 64 absorbs carbon dioxide 59 decomposing organic 59 methane CH4 57 potent greenhouse gas 56 unburned hydrocarbons 56 absorbs sunlight 55 Carbon sequestration 54 Nitrogen oxides 54 biomass combustion 54 Burning fossil fuels 54 CO2 54 sequester carbon dioxide 53 Coal gasification 53 CO -2 53 CO2 equivalents 53 combustion gases 53 CO ² 53 electrochemical reaction 53 Leachate 53 Supercritical 53 fluorocarbons 53 emits #g/km [002] 53 carbon dioxide CO2 52 incomplete combustion 52 sorption 52 carbon dioxide 52 flue gases 52 sulfur dioxides 52 exothermic 52 Biobutanol 52 Lignin 52 co2 52 fast pyrolysis 52 smog forming pollutants 52 Sulfur dioxide 52 polymers plastics 51 gaseous emissions 51 oxyfuel 51 CO2 sequestration 51 Co2 51 evaporative 51 geologic sequestration 51 combustion 51 reduce NOx emissions 51 SF6 51 Hydrochloric acid 51 diesel particulate filter DPF 51 gasifying 51 Sulfuric acid 51 atmospheric pollutants 50 methane 50 isoprene 50 formate 50 oxidizing agent 50 hydroxyl radicals 50 water vapor 50 Volatile organic compounds 50 aerates 50 nitrogenous 50 absorbs moisture 50 calcium oxide 50 VRB ESS 49 nitrogen oxide NOx emissions 49 electrochemically 49 plasmon 49 Carbon Dioxide 49 nitrogen oxide sulfur dioxide 49 Evaporation 49 photocatalyst 49 Pyrolysis 49 Compressed air 49 algal biomass 49 nitrous oxides 49 granulate 49 electrostatic precipitators 49 gases emitted 49 urea injection 49 hydrologic cycle 49 elemental sulfur 49 Anaerobic digestion 49 Nalco Mobotec 49 sequestration CCS 49 Glycol 49 enthalpy 49 mercury emitted 49 desorption 49 degassing 48 Hydrogen sulfide 48 oxidiser 48 aerosol particles 48 environmentally beneficial 48 nitrification 48 calcium hydroxide 48 oxidise 48 N2O 48 adipic acid 48 exhaust aftertreatment 48 superheated steam 48 Piezoelectric 48 converts sunlight 48 particulate matter emissions