NF EN ISO 14852

NF EN ISO 14852

July 2021
Standard Current

Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by analysis of evolved carbon dioxide

This document specifies a method, by measuring the amount of carbon dioxide evolved, for the determination of the degree of aerobic biodegradability of plastic materials, including those containing formulation additives. The test material is exposed in a synthetic medium under standardized laboratory conditions to an inoculum from activated sludge under aerobic conditions.The conditions used in this document do not necessarily correspond to the optimum conditions allowing maximum biodegradation to occur, but this test method is designed to measure the biodegradation of plastic materials and give an indication of their potential biodegradability.The method enables the assessment of the biodegradation to be improved by calculating a carbon balance (optional, see Annex C).The method applies to the following materials:—    natural and/or synthetic polymers, copolymers or mixtures thereof;—    plastic materials which contain additives such as plasticizers, colorants or other compounds;—    water-soluble polymers;—    materials which, under the test conditions, do not inhibit the microorganisms present in the inoculum. Inhibitory effects can be determined using an inhibition control or by another appropriate method (see, for example, ISO 8192[1]). If the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2021

Number of pages

30 p.

Reference

NF EN ISO 14852

ICS Codes

13.020.60   Product life-cycles
83.080.01   Plastics in general

Classification index

T51-802

Print number

1

International kinship

European kinship

EN ISO 14852:2021
Sumary
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by analysis of evolved carbon dioxide

This document specifies a method, by measuring the amount of carbon dioxide evolved, for the determination of the degree of aerobic biodegradability of plastic materials, including those containing formulation additives. The test material is exposed in a synthetic medium under standardized laboratory conditions to an inoculum from activated sludge under aerobic conditions.

The conditions used in this document do not necessarily correspond to the optimum conditions allowing maximum biodegradation to occur, but this test method is designed to measure the biodegradation of plastic materials and give an indication of their potential biodegradability.

The method enables the assessment of the biodegradation to be improved by calculating a carbon balance (optional, see Annex C).

The method applies to the following materials:

—    natural and/or synthetic polymers, copolymers or mixtures thereof;

—    plastic materials which contain additives such as plasticizers, colorants or other compounds;

—    water-soluble polymers;

—    materials which, under the test conditions, do not inhibit the microorganisms present in the inoculum. Inhibitory effects can be determined using an inhibition control or by another appropriate method (see, for example, ISO 8192[1]). If the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.

Replaced standards (1)
NF EN ISO 14852
October 2018
Standard Cancelled
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by analysis of evolved carbon dioxide

Le présent document spécifie une méthode d'évaluation du taux de biodégradabilité aérobie des matériaux plastiques, y compris ceux contenant des additifs, par la détermination de la quantité de dioxyde de carbone libéré. Le matériau d'essai en milieu synthétique est exposé dans des conditions de laboratoire normalisées à un inoculum provenant de boues activées, de compost mature ou de sol dans des conditions aérobies et mésophiles. En cas d'utilisation comme inoculum de boues activées non adaptées, le résultat d'essai peut être utilisé pour évaluer les processus de biodégradation aérobie qui se produisent dans une installation de traitement des eaux résiduaires. Si on utilise un inoculum mélangé ou pré-exposé, la méthode permet d'étudier la biodégradabilité potentielle du matériau d'essai. Les conditions utilisées dans le présent document ne correspondent pas nécessairement aux conditions optimales permettant d'obtenir le taux maximal de biodégradation; cependant, cette méthode d'essai est conçue pour mesurer la biodégradation des matériaux plastiques et pour donner une indication de leur biodégradabilité potentielle.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Environnement d'essai
  • 6 Réactifs
  • 7 Appareillage
  • 8 Mode opératoire
  • 9 Calcul et expression des résultats
  • 10 Validité des résultats
  • 11 Rapport d'essai
  • Annexe A (informative) Principe de fonctionnement d'un système d'essai permettant de mesurer le dioxyde de carbone libéré (exemple)
  • Annexe B (informative) Exemples de détermination du dioxyde de carbone libéré
  • Annexe C (informative) Exemple de détermination d'un bilan carbone
  • Annexe D (informative) Exemple de dosage des polymères insolubles dans l'eau restant à la fin de l'essai de biodégradation et détermination de leur masse moléculaire
  • Bibliographie
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