Title of article :
Biodegradation and ecotoxicity evaluation of a bionolle and starch blend and its degradation products in compost
Author/Authors :
R. Jayasekara، نويسنده , , Mary S. Sheridan، نويسنده , , E. Lourbakos، نويسنده , , H. Beh، نويسنده , , G. B. Y. Christie، نويسنده , , M. Jenkins، نويسنده , , P. B. Halley، نويسنده , , S. McGlashan، نويسنده , , G. T. Lonergan، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
5
From page :
77
To page :
81
Abstract :
A polymer based on a blend of starch and “BionolleTM” has been prepared and tested for biodegradation in compost. The polymer was completely mineralised to carbon dioxide in 45 days. The potential toxicity of the polymer was tested against the earthworm Eisenia fetida using a modification of the American Standard for Testing Materials E1976-97. The earthworms were exposed to 30 g of the polymer for 28 days and changes in weight recorded. In addition, the polymer was firstly degraded by the compost and the worms exposed to the breakdown products for 28 days. Differences in weight were also recorded. In each case the production of juveniles was noted and all earthworms were examined for pathology. The results obtained were processed statistically using a t-test. The number of juveniles, produced from the breakdown products, was highly significant (P<0.001) when compared to the earthworms added to the intact polymer. There was a definitely significant difference (P<0.01,t=3.25) in change in weight between the earthworms that were exposed to the polymer directly and those that were exposed to the breakdown products. There was no indication of any pathology of any earthworms. The polymer is considered safe for this species.
Keywords :
toxicity , BionolleTM , Eisenia fetida
Journal title :
International Biodeterioration and Biodegradation
Serial Year :
2003
Journal title :
International Biodeterioration and Biodegradation
Record number :
732592
Link To Document :
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