eLibrary >
ISO 14853:2016 Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system - Method by measurement of biogas production >
ISO 14853:2016 Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system - Method by measurement of biogas production, 2016
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Reagents and materials
- 6 Apparatus
- 6.1 Laboratory equipment
- 6.2 Apparatus for use when biogas is measured by a manometric method
- 6.3 Apparatus for use when biogas is measured by a volumetric method
- 7 Procedure
- 7.1 General
- 7.2 Digested sludge
- 7.3 Preparation of the inoculum
- 7.4 Preparation of test suspensions and controls
- 7.5 Incubation and gas measurement
- 7.6 Test duration
- 7.7 Measurement of inorganic carbon
- 7.8 Specific analyses
- 8 Calculation and expression of results
- 8.1 Amount of carbon in headspace
- 8.2 Calculation of amount of carbon in headspace when manometric measurement method is used
- 8.3 Calculation of amount of carbon in headspace when volumetric measurement method is used
- 8.4 Amount of inorganic carbon in the liquid
- 8.5 Total amount of carbon converted to gas
- 8.6 Amount of carbon in test material
- 8.7 Calculation of percentage biodegradation
- 9 Validity of results
- 9.1 Maintenance of anaerobic conditions
- 9.2 Inhibition of degradation
- 9.3 Validity of the test
- 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 (ThCO2) and theoretical methane (ThCH4) production
- Annex G (informative) Example of determination of recovery rate
- Annex H (informative) Example of a workflow scheme
- Bibliography [Go to Page]