Related by context. Frequent words. (Click for all words.) 68 fracturing fluids 61 fracking fluids 60 frac fluid 59 fracking fluid 57 toxic residues 56 Sulfuric acid 56 chlorinated solvents 56 fluorocarbons 56 miscible 56 toxic solvents 55 hydro carbons 55 corrosives 55 groundwater remediation 55 polluted groundwater 55 naturally occurring mineral 55 aromatic hydrocarbons 55 microbial contaminants 54 contaminate groundwater 54 chemical 54 chemicals 54 absorbents 54 Reverse osmosis 54 contaminants 54 hazardous liquids 53 biodegraded 53 potassium hydroxide 53 desalting 53 shallow aquifer 53 harmful contaminants 53 sludges 53 atmospheric pollutants 53 Kuan Yin Taiwan 53 Contaminated soil 53 Glycol 53 reinjection 53 diatomite 53 Xylene 53 hydrated lime 53 contaminating groundwater 52 wastewater effluent 52 peroxides 52 inorganic compounds 52 MtBE 52 suspected carcinogen 52 plasticisers 52 Horizontal drilling 52 harmful microorganisms 52 petroleum distillates 52 toxic dispersants 52 polluting groundwater 52 sorbents 52 deplete oxygen 52 petroleum byproducts 52 groundwater 52 elemental sulfur 52 biocidal 52 bioremediation 52 deionized water 51 Residues 51 isopropanol 51 fraccing 51 PetroLuxus ™ 51 fluorochemicals 51 Acidic 51 groundwater aquifers 51 endocrine disrupting chemicals 51 toxic byproducts 51 BTEX 51 Hydrogen sulfide 51 Hexavalent chromium 51 chemical solvents 51 exothermic 51 hydrothermal fluids 51 corrosion inhibitors 51 naturally occurring bacteria 51 Septic tanks 51 benzene toluene 51 Bioremediation 51 phosphine 51 coalbed methane wells 51 biocide 50 bio remediation 50 dissolved solids 50 oxidizing agent 50 mutagens 50 Hydraulic fracturing 50 additive MTBE 50 sorbent 50 solvents 50 Caustic soda 50 Bromine 50 liquids 50 ozonation 50 noxious chemicals 50 tailing ponds 50 perchlorates 50 recharge groundwater 50 herbicides pesticides 50 oxidising 50 Aquifers 50 hypochlorite