00000nam 2200000zi 4500 9.878347 CaOODSP 20241203113651 m o d f cr ||||||||||| 190821s1993 oncbd #ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on En13-5/93-08E-PDF Murphy, Tom, author. Preliminary analysis of in situ bioremediation in Hamilton Harbour / Tom Murphy [and six others]. Burlington, Ontario : National Water Research Institute, Lakes Research Branch, [1993] 1 online resource (21 pages, 9 unnumbered pages) : maps, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 93-08 Title from caption. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 18-20). "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. gccst Harbours gccst Sediments gccst Analysis Canada. Environment Canada. National Water Research Institute (Canada). Lakes Research Branch. NWRI contribution ; 93-08. (CaOODSP)9.844121 PDF 2.41 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-93-08-eng.pdf