Detection of toxicity released by biodegradable plastics after composting in activated vermiculite

Francesco Degli-Innocenti (Corresponding Author), Gaetano Bellia, Maurizio Tosin, Anu Kapanen, Merja Itävaara

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Abstract

The composting test method based on activated vermiculite is a comprehensive system for the assessment of the environmental impact of biodegradable plastics. It allows, in a single test, (i) the measurement of the mineralization of the polymer under study; (ii) the retrieval of the final polymeric residues and (iii) determination of the biomass (to make a final mass balance); (iv) detection of breakdown products of the original polymer. In this study it is shown that the vermiculite test method is also suitable to perform ecotoxicological studies. The Flash test is a method based on kinetic measurement of bioluminescence by Vibrio fischeri, and was applied to evaluate the toxicity of compost samples and vermiculite samples after the biodegradation of a polyurethane (PU) based plastic material. Toxicity was detected in vermiculite samples contaminated by 4,4′ diamino diphenyl methane (MDA), a toxic breakdown product released by the PU moiety, as shown by HPLC. On the other hand, neither toxicity nor the presence of MDA was detected in mature compost. A recovery experiment previously performed had shown a 10% MDA recovery yield from mature compost. The possibility of testing the ecotoxicity of extracts obtained from mineral matrix after biodegradation makes the vermiculite test system particularly interesting for the overall assessment of the environmental impact of biodegradable plastics.
Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalPolymer Degradation and Stability
Volume73
Issue number1
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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composting
vermiculite
Composting
toxicity
Toxicity
plastics
Plastics
multiple docking adapters
Biodegradation
Polyurethanes
Environmental impact
Bioluminescence
Recovery
biodegradation
Polymers
Methane
Biomass
Minerals
breakdown
recovery

Cite this

Degli-Innocenti, Francesco ; Bellia, Gaetano ; Tosin, Maurizio ; Kapanen, Anu ; Itävaara, Merja. / Detection of toxicity released by biodegradable plastics after composting in activated vermiculite. In: Polymer Degradation and Stability. 2001 ; Vol. 73, No. 1. pp. 101-106.
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abstract = "The composting test method based on activated vermiculite is a comprehensive system for the assessment of the environmental impact of biodegradable plastics. It allows, in a single test, (i) the measurement of the mineralization of the polymer under study; (ii) the retrieval of the final polymeric residues and (iii) determination of the biomass (to make a final mass balance); (iv) detection of breakdown products of the original polymer. In this study it is shown that the vermiculite test method is also suitable to perform ecotoxicological studies. The Flash test is a method based on kinetic measurement of bioluminescence by Vibrio fischeri, and was applied to evaluate the toxicity of compost samples and vermiculite samples after the biodegradation of a polyurethane (PU) based plastic material. Toxicity was detected in vermiculite samples contaminated by 4,4′ diamino diphenyl methane (MDA), a toxic breakdown product released by the PU moiety, as shown by HPLC. On the other hand, neither toxicity nor the presence of MDA was detected in mature compost. A recovery experiment previously performed had shown a 10{\%} MDA recovery yield from mature compost. The possibility of testing the ecotoxicity of extracts obtained from mineral matrix after biodegradation makes the vermiculite test system particularly interesting for the overall assessment of the environmental impact of biodegradable plastics.",
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Detection of toxicity released by biodegradable plastics after composting in activated vermiculite. / Degli-Innocenti, Francesco (Corresponding Author); Bellia, Gaetano; Tosin, Maurizio; Kapanen, Anu; Itävaara, Merja.

In: Polymer Degradation and Stability, Vol. 73, No. 1, 2001, p. 101-106.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Itävaara, Merja

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AB - The composting test method based on activated vermiculite is a comprehensive system for the assessment of the environmental impact of biodegradable plastics. It allows, in a single test, (i) the measurement of the mineralization of the polymer under study; (ii) the retrieval of the final polymeric residues and (iii) determination of the biomass (to make a final mass balance); (iv) detection of breakdown products of the original polymer. In this study it is shown that the vermiculite test method is also suitable to perform ecotoxicological studies. The Flash test is a method based on kinetic measurement of bioluminescence by Vibrio fischeri, and was applied to evaluate the toxicity of compost samples and vermiculite samples after the biodegradation of a polyurethane (PU) based plastic material. Toxicity was detected in vermiculite samples contaminated by 4,4′ diamino diphenyl methane (MDA), a toxic breakdown product released by the PU moiety, as shown by HPLC. On the other hand, neither toxicity nor the presence of MDA was detected in mature compost. A recovery experiment previously performed had shown a 10% MDA recovery yield from mature compost. The possibility of testing the ecotoxicity of extracts obtained from mineral matrix after biodegradation makes the vermiculite test system particularly interesting for the overall assessment of the environmental impact of biodegradable plastics.

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