EVALUATION OF CLEANING EFFECTIVENESS, BIODEGRADABILITY, AND ENVIRONMENTAL IMPACT OF SURFACE WASHDOWN CHEMICALS

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Authors
  1. MacGregor, C.
  2. Fewer, P.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Seatech Ltd, Halifax NS (CAN)
Abstract
The report evaluates the cleaning effectiveness, biodegradability, and environmental impact of four surface washdown chemicals. The four chemicals tested were Ammeroid OWS, Unitor Cleanbreak, SWRone and Westkleen 4115. Cleaner results are compared relative to each other as well as being compared to using water alone. None of the cleaners efficiently separated the 5% oil phase from the water phase, with oil in water levels always greater than 69 ppm, and some cleaners greater than 5000 ppm. In fact, all of the cleaners tested contributed to the dissolution of il inot the water phase. Two of the degreasers showed satisfactory cleaning power, removing over 70% of Bunker oil from the metal test coupon surface. Biodegradability of a chemical refers to the ability for reduction in organic complexity of the chemical through the metabolic activity of organisms. Organic carbon present in the substance is metabolized and evolved as carbon dioxide, resulting in biodegradation. In this study, the two organic based cleaners showed biodegradability of 20 to 42%. The test was not appropriate to the two inorganic based cleaners. Environmental impact was measured in terms of the validity of Material Safety Data Sheets (MSDS) provided by the manufacturer. Three of the four demulsifier MSDC were in agreement with our findings concerning organic and inorganic constituents. TRUNCATED
Keywords
Bilges
Report Number
DREA-CR-96-410 — Contractor Report
Date of publication
01 Mar 1996
Number of Pages
60
DSTKIM No
96-02542
CANDIS No
499038
Format(s):
Document Image stored on Optical Disk;Hardcopy

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