Adsorption of some insecticides on powdered activated carbon

Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?

“…As such, an effective dose to kill crayfish but not fish is feasible (Allert et al 2016). It is unlikely that a single stocking event of hatchery fish would increase cypermethrin concentrations in receiving waters above acute or chronic thresholds outside of the mixing zone; however, the potential for environmental contamination must be understood and controlled if chemicals cannot be removed from hatchery truck tank water with the use of carbon filtration (Hussein et al 1997;Hladik et al 2009;Voorhees et al 2020) prior to it being discharged to the environment. Finally, chemical concentrations in treated fish must be examined to limit potential trophic transfer of insecticides to humans or wildlife.…”

“…It is unlikely that a single stocking event of hatchery fish would increase cypermethrin concentrations in receiving waters above acute or chronic thresholds outside of the mixing zone; however, the potential for environmental contamination must be understood and controlled if chemicals cannot be removed from hatchery truck tank water with the use of carbon filtration (Hussein et al. 1997; Hladik et al. 2009; Voorhees et al.…”