Ciencia / Plásticos Biodegradables
Plásticos BiodegradablesEnsayos y Trabajos: Plásticos Biodegradables
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Enviado por: lydia_ec 20 julio 2011
Palabras: 3363 | Páginas: 14
Biodegradable and compostable packaging materials made from biodegradable polymers (BDP) were introduced
into the market to reduce the amounts of conventional packaging materials. Material recovery by the
municipal organic waste collection system was examined by analysis campaigns of the waste streams organic
residues, packing wastes and MSW. The processing of organic wastes mixed with biopolymeric packaging
items has been tested in a commercial treatment facility. The safe use of the compost produced from these
materials was demonstrated by regular compost analysis campaigns and in a full-scale agricultural application
test. The collection via the municipal organic waste collection worked properly, no increased amount of impurities
was detected. The processing of BDP in composting facilities is possible though it may require some
adaptation measurements to provide optimal source separation. The use of produced composts for agricultural
purposes has no negative effects on plant yields and soil.
KEYWORDS: biodegradable polymer packing, model project Kassel
A model project with biodegradable polymers (BDP), i.e. plastic packaging items, was
launched May 2001 in the German city of Kassel, that was prolonged until December 2002.
The model project was conducted to promote and increase the use of biodegradable packing
articles substituting conventional ones and to scrutinize the recycling paths of these explicitly
labeled packing products via the municipal organic waste collection. The application of
biodegradable materials for packaging purposes was considered to be the most practical
area for their use (Tänzer 2000, Witt et al. 1998). Biologically degradable polymers based
on renewable resources are considered in the German Packaging Ordinance (VerpackV,
1998), in the Biowaste Composting Ordinance (BioAbfV, 1998) and it is possible to carry
out a biodegradability test according to a preliminary DIN standard (DIN V 54 900
to determine their compostability. A pilot experiment to introduce packaging made from
biodegradable polymers into the market was carried out to demonstrate that whether or not
it is possible to label biodegradable packaging products plainly and in a recognizable manner
and to motivate consumers to properly segregate these materials after use and place
them into the municipal organic waste bin.
The pilot-scale model project was made possible by a 50% sponsorship from the German
Agency of Renewable Resources (FNR e.V.). The remaining 50% of the costs of the project
were sponsored by producers of the raw material, processing industries and the retail
trade. About 20 companies were involved in the project and actively supported it. Moreover,
local and national retail traders (store chains) also participated in the model project.
The kind co-operation and support of the composting facility Göttingen, the municipal
waste management company “Die Stadtreiniger Kassel” and ...
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