GB/T 38737-2020Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in controlled slurry digestion systems - Method by measurement of biogas production (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
April 28, 2020
Implementation date
November 1, 2020
Scope
GB/T 38737-2020 (Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in controlled slurry digestion systems - Method by measurement of biogas production) is available as an English-translated PDF.
GB/T 38737-2020 is the Chinese standard "Plastics - Determination of the ultimate anaerobic biodegradation of plastic materials in controlled slurry digestion systems - Method by measurement of biogas production".
Its scope clause reads: This standard specifies a method for evaluating the anaerobic biodegradability of plastics in a controlled sludge anaerobic digestion system.
The content is not more than 15%. This system is more common in sewage sludge, livestock manure or garbage disposal sites. This method aims to determine the Conversion rate of organic carbon to carbon dioxide (CO2) and methane (CH4) and other biogas.
With a known carbon content, this method is suitable for the following materials. --- natural and/or synthetic polymers, copolymers or mixtures thereof; --- resins containing plasticizers, dyes or other compounds; --- Water soluble polymer.
This standard does not apply to materials that have an inhibitory effect on experimental microorganisms at the test concentration. Note. The inhibitory effect can be determined by inhibition test (eg. ISO 13641-1 or ISO 13641-2). Its clauses include terms and definitions.
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Document preview — GB/T 38737-2020
National Standard of the People's Republic of China
- ICS
- 83.080.01
- Classification
- G 31
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This standard specifies a method for evaluating the anaerobic biodegradability of plastics in a controlled sludge anaerobic digestion system.
The content is not more than 15%. This system is more common in sewage sludge, livestock manure or garbage disposal sites. This method aims to determine the
Conversion rate of organic carbon to carbon dioxide (CO2) and methane (CH4) and other biogas.
With a known carbon content, this method is suitable for the following materials.
--- natural and/or synthetic polymers, copolymers or mixtures thereof;
--- resins containing plasticizers, dyes or other compounds;
--- Water soluble polymer.
This standard does not apply to materials that have an inhibitory effect on experimental microorganisms at the test concentration.
Note. The inhibitory effect can be determined by inhibition test (eg. ISO 13641-1 or ISO 13641-2).
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 32106-2015 Determination of the final anaerobic biodegradability of plastics in aqueous culture fluids by measuring biogas
Product method (ISO 14853..2005, IDT)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Ultimate anaerobic biodegradation
Organic compounds are broken down by microorganisms into methane, carbon dioxide, water and mineralized inorganic salts and other elements and new biomass.
3.2 Digested sludge
A mixture of precipitated sewage and activated sludge. The activated sludge is taken from the purpose of reducing biomass content and improving sludge dewatering capacity
The temperature is suitable for anaerobic digesters.
Note. Digested sludge contains microorganisms suitable for anaerobic fermentation and methanogenesis to promote the production of carbon dioxide and methane.
GB/T 39690.2 | GB/T 39690.1 | GB/T 38287 | GB/T 12002 | GB 16413 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 14853
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Related Standards
GB/T 32106-2015 — Plastics -- Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system -- Method by measurement of biogas production
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