20/30408882 DC - BS EN ISO 14852. Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by analysis of evolved carbon dioxide

20/30408882 DC

BS EN ISO 14852. Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by analysis of evolved carbon dioxide

Status : Current, Draft for public comment   Published : July 2020

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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, mesophilic conditions.

If an unadapted activated sludge is used as the inoculum, the test result can be used to assess the aerobic biodegradation processes which occur in a waste water treatment plant environment. If a mixed or pre-exposed inoculum is used, the method can be used to investigate the potential biodegradability of a test material.

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:

  1. natural and/or synthetic polymers, copolymers or mixtures thereof;

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

  3. water-soluble polymers;

  4. 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.




Standard Number20/30408882 DC
TitleBS EN ISO 14852. Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by analysis of evolved carbon dioxide
StatusCurrent, Draft for public comment
Publication Date02 July 2020
Normative References(Required to achieve compliance to this standard)ISO 8245
Informative References(Provided for Information)ISO 17556:2012, ISO 11923, ISO 9439, ISO 10634, ISO/TR 15462, ISO 8192, ASTM D 3536-91
International RelationshipsISO/DIS 14852
Draft Expiry Date25 August 2020
DescriptorsCarbon, Specimen preparation, Dissolved gases, Test specimens, Aerobic bacteria, Additives, Chemical analysis and testing, Biological analysis and testing, Volumetric analysis, Test equipment, Plastics, Equations, Determination of content, Testing conditions, Bibliography, Gas analysis, Biodegradability, Degradation, Microbiological analysis, Polymers, Carbon dioxide
ICS83.080.01
Title in FrenchÉvaluation de la biodégradabilité aérobie ultime des matériaux plastiques en milieu aqueux — Méthode par analyse du dioxyde de carbone libéré
CommitteePRI/89
PublisherBSI
FormatA4
DeliveryYes
Pages27
File Size452 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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