Preliminary analysis of in situ bioremediation in Hamilton Harbour / Tom Murphy [and six others]. : En13-5/93-08E-PDF

"Approximately 14 tonnes of calcium nitrate was injected into sediments of Hamilton Harbour. Three areas in total of about 1.8 ha were treated. Initial results indicate rapid oxidation of about 80% of the hydrogen sulphide (293 ug/L to 53 ug/L at deep basin). Oxidation resulted in precipitation of about 98% of the porewater iron in the surface 15 cm of sediment but the concentration of most trace metals like zinc and lead were unchanged. The nitrate treatment did not significantly affect the concentration of acid volatile sulphides. In the Dofasco boatslip biodegradation of organic contaminants varied from 79% for low molecular weight compounds (BTXs), to 25% for petroleum hydrocarbons, and 15% for polynuclear aromatic hydrocarbons. These rates of biodegradation are consistent with many studies; more time is required for bacteria to metabolize the organic wastes"--Abstract.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.878347&sl=1

• Format MARC XML
• Format MARC HTML

Demander des formats alternatifs