ISO 14853:2016 PDF

Scope: 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 90 d, which is longer than the normal sludge retention time (25 to 30 d) in anaerobic digesters, although 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.

ISO 14853:2016 Referenced Document

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 11923:1997 Water quality - Determination of suspended solids by filtration through glass-fibre filters
ISO 13641-1:2003 Water quality - Determination of inhibition of gas production of anaerobic bacteria - Part 1: General test
ISO 13641-2:2003 Water quality - Determination of inhibition of gas production of anaerobic bacteria - Part 2: Test at low biomass concentrations
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)
ISO 8245:1999 Water quality - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)

2016 ISO 14853:2016 Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system - Method by measurement of biogas production
2009 ISO 14853:2005/cor 1:2009 Plastics — Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system — Method by measurement of biogas production TECHNICAL CORRIGENDUM 1
2005 ISO 14853:2005 Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system - Method by measurement of biogas production