Table 3 Composition and hazard potential of two slickwater fluids
Fracking fluid used at Damme 3 | Planned improvement of a slickwater fluid | |||||||
|---|---|---|---|---|---|---|---|---|
Function | Additive | Dissolved concentration in fracking fluid | Risk quotient based on toxicological assessment | Risk quotient based on eco-toxicological assessment | Additive | Dissolved concentration in fracking fluid | Risk quotient based on toxicological assessment | Risk quotient based on eco-toxicological assessment |
Clay stabilizer | Tetramethyl-ammonium chloride | 520 mg/L | 1,733,000 | Database insufficient (>2,600,000) | Cholinium chloride | 750 mg/L | < 43 | 210 |
Friction reducer | Hydrotreated light petroleum distillates | 220 mg/L | 2,200 | 55,000 | Butyl diglycol | 350 mg/L | 40 | 6,600 |
Surfactant | Ethoxylated octylphenol | 36 mg/L | 120,000 | 20,000 | Polyethylene glycol monohexyl ether | 130 mg/L | 743 | 760 |
Biozide | Isothiazolinone derivative | 4 mg/L | 7,520 | 72,000 | (Ethylenedioxy)-dimethanol | 1,000 mg/L | 10,000,000 | Database insufficient (139,000) |