Related by context. Frequent words. (Click for all words.) 69 fly ash 59 rice husk 58 sludges 58 petcoke 56 quicklime 56 gasified 56 cement kiln 55 petroleum coke 55 flue gases 55 sorbents 54 baghouse 54 flue gas 54 pervious concrete 53 effluents 53 rice hulls 53 bauxite ore 53 sorbent 53 pelletizing 53 evaporation ponds 52 gypsum 52 absorbents 52 regrind 52 ethyl acetate 52 sulfuric acid 51 dioxide 51 Municipal Solid Waste 51 gasifiers 51 sinter plant 51 syngas 51 electrolytic 51 leachate 51 cullet 51 sinter 51 alkali 50 organic solvents 50 potassium hydroxide 50 rice husks 50 ionic liquid 50 coal tar 50 silane 50 pelletized 50 coal combustion 50 Refractories 50 lignite 50 elemental mercury 50 bagasse 50 slurry 50 dredged material 50 crushed limestone 50 briquette 49 Activated Carbon 49 waste MSW 49 lubricating oils 49 aniline 49 biomass 49 coal 49 chlorides 49 furans 49 MACT 49 coal gasification 49 silica gel 49 VOC emissions 49 magnesium oxide 49 agricultural residues 49 sludge 48 wastewater sludge 48 feedstock 48 livestock manure 48 geotextile 48 solvents 48 biofilter 48 silica sand 48 Gasification 48 clinker 48 hydrofluoric acid 48 silt 48 titanium oxide 48 pollutants 48 industrial effluents 48 gasification 48 chlorinated solvents 48 zeolites 48 wood preservative 48 Slurry 48 renewable feedstocks 48 SF6 48 iron ores 48 gasify 48 wood chips 48 vermicompost 48 sulfur 48 tailings 48 hazardous wastes 48 reactant 47 CO -2 47 coarse sand 47 briquettes 47 adsorbent 47 ash ponds 47 refractories 47 ferrous metal