ASTM D5511 PDF

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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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Reports shall clearly state the percentage of net gaseous carbon generation for both 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. awtm

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters operating only on pretreated household waste. D551 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.

Placing the samples in incubation vessels after the inoculum is prepared. These gasses are measured daily and the results ast carefully d511. 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.

Work Item s – proposed revisions of this standard. Reports shall clearly state the d5511 of net gaseous carbon generation for both the test and reference samples at the completion of the test.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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ASTM D5511 – Anaerobic Biodegradation

Specific hazards are given in Section 8. The values given in SI units adtm to be regarded as the standard. However, it is expected to resemble the environment of a high-solids anaerobic-digestion process operated under optimum conditions.

Furthermore, results shall not be extrapolated past the actual duration of the test. Work Item s – proposed revisions of this standard. Astj to Active This link will always route to the current Active version of the standard.

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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. Placing the sample materials in an inoculum derived from anaerobic digesters operating on household waste.

This test method determines the degree and rate of biodegradation of plastic materials in an oxygen-free anaerobic environment. The molar weight of the total gas produced by the test samples is calculated and d511 to the carbon weight of the original samples and the percent biodegradation of the samples can then be determined. Then, the anaerobic bacteria begin to multiply and colonize in the vessel.

Depleting the oxygen in the incubation vessels after an initial burst of xstm activity.

Three vessels are used for each sample, and one negative control and one positive control are prepared as well.

Link to Active This link will always route to the current Active version 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 the plastic and the resulting quality and appearance of the digestate after an anaerobic digestion process. As these bacteria begin to utilize the s5511 in the test samples, they produce carbonaceous gasses such as CO2 and CH4.

They are kept within strict temperature and moisture tolerances.

The vessels are airtight and are not exposed to UV radiation. Specific hazards are given in Section 8. It is the responsibility of the user of this standard to asttm appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters operating only on pretreated household waste.

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

The testing process includes: This inoculum contains methanogenic asrm that are also found in landfills. If the positive control which contains cellulose continues to exhibit biodegradation then the test is considered valid and the inoculum considered alive. Furthermore, results shall not be extrapolated past the actual duration of the test. 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.

The test is allowed to run for as long as desired. This is often sludge from a water treatment plant mixed with a certain percentage of solid material from composting facilities. Historical Version s – view previous versions of standard. 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.

When the test is run to satisfaction, final carbon and methane gas readings are d55111 and the incubation asstm are emptied and the samples are cleaned and weighed.

Reports shall clearly state the percentage of net gaseous carbon generation for both the test and reference samples at c5511 completion of the test. Note 1—This test method is equivalent to ISO Active view current version of standard.