BS ISO 14853:2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Plastics. Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system. Method by measurement of biogas production
Hardcopy , PDF
28-02-2018
English
30-04-2010
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Procedure
8 Calculation and expression of results
9 Validity of results
10 Test report
Annex A (informative) - Example of apparatus for determining
the amount of biogas produced by measuring the increase
in gas pressure
Annex B (informative) - Example of apparatus for determining
volumetrically the amount of biogas produced
Annex C (informative) - Example of a biodegradation curve
Annex D (informative) - Examples of data sheets for anaerobic
biodegradability tests
Annex E (informative) - Table of water vapour pressures at
various temperatures
Annex F (informative) - Calculation of theoretical carbon dioxide
(ThCO[2]) and theoretical methane (ThCH[4]) production
Annex G (informative) - Example of determination of recovery rate
Annex H (informative) - Example of a workflow scheme
Bibliography
Gives a method for the determination of the ultimate anaerobic biodegradability of plastics by anaerobic microorganisms.
| Committee |
PRI/21
|
| DevelopmentNote |
Supersedes 15/30321718 DC. (07/2016) Renumbered and superseded by BS EN ISO 14853. (03/2018)
|
| DocumentType |
Standard
|
| Pages |
38
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| Supersedes |
This International Standard specifies a method for the determination of the ultimate anaerobic biodegradability of plastics by anaerobic microorganisms. The conditions described in this International Standard do not necessarily correspond to the optimum conditions for the maximum degree of biodegradation to occur. The test calls for exposure of the test material to sludge for a period of up to 60 days, which is longer than the normal sludge retention time (25 to 30 days) in anaerobic digesters, though digesters at industrial sites can have much longer retention times.
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 e.g. ISO 13641). If the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.
| Standards | Relationship |
| ISO 14853:2005/Cor 1:2009 | Identical |
| BS PAS 600(2013) : 2013 | BIO-BASED PRODUCTS - GUIDE TO STANDARDS AND CLAIMS |
| ISO 11923:1997 | Water quality — Determination of suspended solids by filtration through glass-fibre filters |
| ISO 11734:1995 | Water quality — Evaluation of the "ultimate" anaerobic biodegradability of organic compounds in digested sludge — Method by measurement of the biogas production |
| ISO 8245:1999 | Water quality Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) |
| ISO 7827:2010 | Water quality Evaluation of the "ready", "ultimate" aerobic biodegradability of organic compounds in an aqueous medium Method by analysis of dissolved organic carbon (DOC) |
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