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The biodegradability of plastic polymers in olive mill waste compost was determined by experimental device

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Document pages: 7 pages

Abstract: The use of biodegradable polymers is being promoted in agriculture to replace materials extracted from oil, thereby reducing environmental concerns. However, in order to make an important assessment, the biodegradation rate must be measured under specific standardized conditions. According to ISO 14855-1, we designed and used an experimental device to evaluate the biodegradation rates of three renewable resource-based biopolymers, two polycaprolactone (PCL) composites and compatible polylactic acid and polybutyrate (PLA PBAT) mixtures. The biodegradation test was carried out under composting conditions, using mature olive mill waste (OMW) compost as inoculum. The emission of carbon dioxide is automatically recorded by infrared gas detector and trapped in saturated BA (OH) 2 Soltion and evaluated via a standard titration method to check the results. Some of the samples reached more than 80 biodegradation in less than 20 days. Both the experimental apparatus and the OMW compost showed to be suitable for the cases studied.

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