ASTM D5511 PDF

ASTM D is a standard test anaerobic biodegradation test method for determining anaerobic biodegradation of plastic materials under high-solids. ASTM D Standard Test Method. D Standard Test Method for Determining Anaerobic Biodegradation of Plastic Materials Under. High-Solids. ASTM D Significance and Use. Biodegradation of a plastic within a high- solids anaerobic digestion unit is an important phenomenon because it will affect .

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This procedure has been developed to permit the determination of the rate and degree of anaerobic biodegradability of plastic products when placed in a high-solids anaerobic digester for the production of digestate from municipal solid waste.

Link to Active This link will always route to the current Active version of the standard. However, it is expected to resemble the environment of a high-solids anaerobic-digestion process operated under optimum conditions. Active view current version of standard.

Work Item s – proposed revisions of this standard. Furthermore, results shall not be extrapolated past the actual duration of the test. The test materials are exposed to a methanogenic inoculum derived from dd5511 digesters operating only on pretreated household waste.

Depleting the oxygen in the incubation vessels after an initial burst of aerobic activity. These gasses are measured daily and the results are carefully recorded. Reports shall clearly state the percentage of net gaseous carbon generation for d55511 the test and reference samples at the completion of the test.

Biodegradation of plastics could allow for the safe disposal of these plastics through aerobic and anaerobic solid-waste-treatment plants.

ASTM D5511 – Anaerobic Biodegradation

Placing the sample materials in an inoculum derived from anaerobic digesters operating on household waste. This is often sludge from a water treatment plant mixed with a certain percentage of solid material from composting facilities. Link to Active This link will always route to the current Active version of the standard. More specifically, the procedure is intended to create a standard laboratory environment that will permit a rapid astn reproducible determination of the anaerobic biodegradability under high-solids digestion conditions.

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This test method also resembles other anaerobic conditions where the gas generated is recovered and biogas production is actively promoted by inoculation for example, codeposition of anaerobic sewage sludge, anaerobic leachate recirculationmoisture control for example, leachate recirculationand temperature control for example, short-term injection of oxygen, heating of recirculated leachate 5, 6, 7.

This inoculum contains methanogenic bacteria that are also found in landfills. The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters operating only on pretreated household atm.

Three vessels are used for each sample, and one negative control and one positive control are prepared as well. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Biodegradation of a plastic within a high-solids anaerobic digestion unit is an important phenomenon because it will affect the decomposition of other waste materials enclosed by aatm plastic and the resulting quality and appearance of the digestate after an anaerobic digestion process.

Specific hazards are given in Section 8. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

The vessels are airtight and are not exposed to UV radiation.

If the positive control which contains cellulose continues to exhibit biodegradation then the test is considered valid and the inoculum considered alive. This test method determines the degree and rate of biodegradation of plastic materials in an oxygen-free anaerobic environment.

Furthermore, results shall not be extrapolated past the actual duration of the test.

Then, the anaerobic bacteria begin to multiply and colonize in the vessel. Historical Version s – view previous versions of standard.

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The test is allowed to run for as long as desired. Reports shall clearly state the percentage of net gaseous carbon generation for both the test and reference samples at the completion of the test.

Work Item s – proposed revisions of this standard. Reports shall clearly state the percentage of net gaseous carbon generation for both the test and reference samples at the completion of the test.

Note 1—This test method is equivalent to ISO The procedure is intended to create a standard laboratory environment that will permit a rapid and reproducible determination of the anaerobic biodegradability under high-solids digestion conditions. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This test method is designed to be applicable to all plastic materials that are not inhibitory to the microorganisms present in anaerobic digesters operating on household waste.

BioPro Global – ASTM D

Furthermore, results shall not be extrapolated past the actual duration of the test. Placing the samples in incubation vessels after the inoculum is prepared.

It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazards are given in Section 8.

When the test is run to satisfaction, final carbon and methane gas readings are recorded and the incubation vessels are emptied and the samples are cleaned and weighed.

The values given in SI units are sstm be regarded as the standard. The testing process includes: