Results showing reduction of contaminant bioavailability and leaching after amendment with activated carbon

Sediment amendment with 2.5% activated carbon reduced total PCB biouptake in a freshwater oligochaete by 90%.

Activated carbon amended to freshwater sediment at 5% by dry weight reduced mercury bioaccumulation by 84% and methyl-mercury bioaccumulation by 90% in a freshwater oligochaete.

Sediment porewater PCB concentration is reduced with increasing dose of activated carbon in sediment.

Reactive sand cap containing 2% by weight of activated carbon reduces PAH breakthrough by several orders of magnitude in creosote contaminated sediments.

Ongoing SediMite™ demonstration projects:

  1. Mercury and methylmercury impacted creek and marsh site in Aberdeen Proving Grounds supported by Environmental Security Technology Certification Program (DoD).
  2. PCB impacted wetland environment at Ft. Eustis, VA, supported by the National Institute of Environmental Health Sciences, Superfund Basic Research Program.
  3. Several mercury and DDT impacted sediment sites