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Biogas

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VDI 4630

German VDI 4630 (2016) standard provides rules and specifications for tests to determine the biogas output of organic materials which serve the interpretation and optimisation of biogas plants. 

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Biochemical methane potential (BMP)

The bio-methane potential or biochemical methane potential (BMP) of a specific substrate defines the maximum amount of methane that can be produced by anaerobic digestion.

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Specific methanogenic activity (SMA)

Specific Methanogenic Activity (SMA) test evaluates the anaerobic sludge capability to convert an organic substrate into methane. 

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Residual gas potential (RGP)

The residual gas potential (RGP) or residual biogas potential (RBP) test is designed to measure the stability of digestate samples under anaerobic conditions. 

Anaerobic Biodegradability

ISO 14853:2016

ISO 14853:2016 specifies a method for the determination of the ultimate biodegradability of plastics under anaerobic conditions in an aqueous system by anaerobic microorganisms.

ISO 13975:2019

ISO 13975:2019 specifies a method of evaluating the ultimate biodegradability of plastic materials under anaerobic conditions in a controlled anaerobic slurry digestion system.

ISO 15985:2004

ISO 15985:2004 specifies a method for simulating an intensive anaerobic digestion process and determines the ultimate biodegradability and degree of disintegration of a test material under high-solids anaerobic digestion conditions.

ISO 11734:1995

ISO 11734:1995 specifies a screening method for the evaluation of the ultimate biodegradability of organic compounds in digested sludge at a given concentration by anaerobic microorganisms.

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ASTM D5511 – 18

ASTM D5511-18 is designed to yield a percentage of conversion of carbon in the sample to carbon in the gaseous form under conditions found in high-solids anaerobic digesters.

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ASTM D5210 – 92

ASTM D5210-92 is a standard test method for determining the anaerobic biodegradation of plastic materials in the presence of municipal sewage sludge. 

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ASTM D5526 – 18

ASTM D5526 -18 is a standard test method for determining the anaerobic biodegradation of plastic materials under accelerated landfill conditions. 

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OECD Guidelines for the testing of chemicals Test No.311

OECD 311 test guideline, which is based on ISO 11734 (1995), describes a method for the evaluation of the anaerobic biodegradability of organic compounds in digested sludge. 

Aerobic Biodegradability

ISO 14851:2019

ISO 14851:2019 specifies a method, by measuring the oxygen demand in a closed respirometer, for the determination of the degree of aerobic biodegradability of plastic materials, including those containing formulation additives in an aqueous system.

ISO 17556:2019

ISO 17556:2019 specifies a method for determining the ultimate aerobic biodegradability of plastic materials in soil by measuring the oxygen demand in a closed respirometer or the amount of carbon dioxide evolved.

ISO 18830:2016

ISO 18830:2016 is based on the determination of biological oxygen demand (BOD) and derives from ISO 14851.

ISO 22404:2019

ISO 22404:2019 test method is a simulation under laboratory conditions of the habitat found in sandy tidal zone that is called eulittoral zone in marine science. 

ISO 19679:2020

ISO 19679:2020 specifies a test method to determine the degree and rate of aerobic biodegradation of plastic materials when settled on marine sandy sediment at the interface between seawater and the seafloor, by measuring the evolved carbon dioxide (CO2) – a method derives from ISO 14852.

ISO 14852:2018

ISO 14852:2018 specifies a method for determining the biodegradability of a plastic material using aerobic, mesophilic microorganisms in an aqueous system.

ISO 23977-1: 2020

ISO 23977-1: 2020 describes two variations of a test method for determining the biodegradability of plastics materials in natural seawater.

ISO 23977-2: 2020

ISO 23977-2: 2020 describes two variations of a test method for determining the biodegradability of plastics materials in natural seawater.

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OECD Guidelines for the testing of chemicals Test No. 301 C & F

OECD 301 (1992) test guideline presents six methods (i.e., A-F) that permit the screening of chemicals for ready biodegradability in an aerobic aqueous medium.

Compostability

ISO 14855-1:2012

ISO 14855-1:2012 test method determines the ultimate biodegradability and degree disintegration of test material under conditions simulation an intensive aerobic composting process.

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ASTM D-5338 -15 (2021)

ASTM D-5338-15 which is equivalent to ISO 14855 provides a test method for determining aerobic biodegradation of plastic materials under controlled composting conditions at thermophilic temperatures. 

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AS 5810-2010

Australian standard AS 5810 specifies requirements and procedure to determine whether a plastic material is biodegradable in home composting conditions. 

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