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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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.

BioPro Global – ASTM D

More specifically, 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.

Specific hazards are given in Section 8.

Placing the sample materials in an inoculum derived from anaerobic digesters operating on household waste. Link to Active This link will always route to the current Active version of the standard. As these bacteria begin to utilize the carbon in the test samples, they produce carbonaceous gasses such as CO2 and CH4. 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.

They are kept within strict temperature and moisture tolerances. The molar weight of the total gas produced by the test samples is dd5511 and compared to the carbon weight of the original samples and the percent biodegradation of the samples can then be determined.

Reports shall clearly state the percentage of net gaseous d55511 generation for both the test and reference samples at the completion of the test. Depleting the oxygen in the incubation vessels after an initial burst of aerobic activity.

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The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters operating only on pretreated household waste. Historical Version s – view previous versions of standard. Reports shall clearly state the asm of net gaseous carbon generation for both the test and reference samples at the completion of the test.

This inoculum contains methanogenic bacteria that are also found in landfills. Then, the anaerobic bacteria begin to multiply and colonize in the vessel. 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 the plastic and the resulting quality d5511 appearance of the digestate after an anaerobic digestion atsm.

Link to Active This link will always route to r5511 current Active version of the standard. Work Item s – proposed revisions of this standard. Active view current version of standard. It is the responsibility of the r5511 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D5511 – Anaerobic Biodegradation

Reports shall clearly aztm the percentage of net gaseous carbon generation for both the test and reference samples at the completion of the test. Furthermore, results shall not be extrapolated past the actual duration of the test. This test method determines the degree and rate of biodegradation of plastic materials in an oxygen-free anaerobic environment.

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

However, it is expected to resemble the environment of a high-solids anaerobic-digestion process operated under optimum conditions. Work Item s – proposed revisions of r5511 standard. This test method also resembles other anaerobic conditions where the gas generated is sstm and biogas production is actively promoted by inoculation for example, codeposition of adtm sewage sludge, anaerobic leachate recirculationmoisture control for example, leachate recirculationand temperature control for example, short-term injection xstm oxygen, heating of recirculated leachate 5, 6, 7.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Three vessels are used for each sample, and one negative control and one positive control are prepared as well.

Furthermore, results shall not be extrapolated past the actual duration of the test. These gasses are measured daily and the results are carefully recorded.

If the positive control which contains cellulose continues to exhibit biodegradation then the test is considered valid and the inoculum considered alive. The test materials are exposed to a methanogenic wstm derived from anaerobic digesters operating only on pretreated household waste. 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.

Note 1—This test method is equivalent to ISO Furthermore, results shall not be extrapolated past the actual duration of the test. Specific hazards are given in Section 8. The testing process includes: The aetm 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.

This is often sludge from a water treatment plant mixed with a certain percentage of solid material from composting facilities. The test is allowed to run for as long as desired.

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.

Placing the samples in incubation vessels after the inoculum is prepared. The vessels are airtight and are not exposed zstm UV radiation.

The values given in SI units are to be regarded as the standard.