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Magnetic cleansing of weathered/tarry oiled feathers--the role of pre-conditioners |
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| Authors: | Dao Hien V Ngeh Lawrence N Bigger Stephen W Orbell John D Healy Margaret Jessop Rosalind Dann Peter |
| Institution: | aInstitute for Sustainability and Innovation, Victoria University, P.O. Box 14428, Melbourne City MC, Victoria 8001, Australia bSchool of Molecular Sciences, Victoria University, P.O. Box 14428, Melbourne City MC, Victoria 8001, Australia cPhillip Island Research Centre, Phillip Island Nature Park, Phillip Island, Victoria 3922, Australia |
| Abstract: | Iron powder has previously been demonstrated to be effective in the removal, via magnetic harvesting, of a wide variety of oil contaminants from feathers and plumage. This study investigates the efficacy of magnetic cleansing for the removal from feathers of tarry contamination that has been allowed to weather. Clusters of feathers from Mallard duck (Anas platyrhnchos) and Little Penguin (Eudyptula minor) were completely immersed in a tarry contaminant and allowed to weather from one to fourteen days. The contaminant was removed using a magnetic cleansing protocol and the removal efficacy assessed gravimetrically. For one, seven and fourteen days of weathering, a final removal (after fourteen treatments) of more than 99% and 97% was achieved for duck feathers and penguin feathers, respectively. Repeating the experiments (for a seven-day weathering period) for both duck and penguin feathers, with the judicious application of a pre-conditioner (olive oil), further improved removal efficacy. A convenient method to screen for improved pre-conditioning agents is suggested. |
| Keywords: | Iron powder Magnetic Oil removal Weathered contamination Feather Pre-conditioner |
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