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Información tecnológica

versão On-line ISSN 0718-0764

Resumo

RUIZ, Mariana; PASTOR, Karla  e  ACEVEDO, Adriana. Biodegradability of disposable products in a vermicomposting system. Inf. tecnol. [online]. 2013, vol.24, n.2, pp.47-56. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642013000200007.

The objective of this study is to conduct an initial test of whether green disposable products satisfactorily degrade in small-scale vermicomposting systems. Most of these materials are made of paper/cardboard or natural biopolymers, being the polylactic acid (PLA) the most commonly employed. Four disposable green products, made of sugar cane fiber, PLA, paper covered with PLA and corn polymer, respectively, were tested. Results showed that disposable items made of PLA, paper covered with PLA, and corn polymer do not satisfactorily degrade in this kind of systems. This is mainly due to not having the ideal conditions for biopolymer hydrolysis, molecular weight reduction, and subsequent microbiological attack and/or worm digestion. However, the sugar cane fiber material had a positive performance in the test.

Palavras-chave : biodegradable disposable products; vermicomposting; PLA biodegradability.

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