GB/T 32106-2015 (English Version) Plastics.Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system.Method by measurement of biogas production

Standard No.: GB/T 32106-2015
Language: Chinese, Available in English version
Release Date: 2015
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 32106-2015

Scope: This standard specifies a test method for determining the final anaerobic biodegradability of plastics in aqueous culture solution. The test conditions used in this standard are not necessarily the optimum conditions for producing the maximum biodegradation rate. Although sludge can have a longer retention time in industrial anaerobic digestion equipment, it is usually 25 days to 30 days, and this standard stipulates that the test period can be up to 60 days. The method is applicable to the following materials: natural and/or synthetic polymers, copolymers and mixtures thereof; plastics containing additives such as plasticizers, pigments, etc.; water-soluble polymers; which do not inhibit the inoculum under the test conditions materials with microbial activity. Inhibition can be determined using inhibition controls or other appropriate methods (see ISO 13641). If the test material inhibits the inoculum, other inoculum or pre-exposed inoculum may be used at a lower test concentration.

GB/T 32106-2015 Referenced Document

ISO 13641 Water quality - Determination of inhibition of gas production of anaerobic bacteria - Part 2: Test at low biomass concentrations
ISO 8245 Water quality - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)

2015 GB/T 32106-2015 Plastics.Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system.Method by measurement of biogas production