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 .
|Published (Last):||24 May 2006|
|PDF File Size:||8.34 Mb|
|ePub File Size:||7.65 Mb|
|Price:||Free* [*Free Regsitration Required]|
BioPro Global – ASTM D
Referenced Documents purchase separately The documents listed below are referenced s5511 the subject standard but are not provided as part of the standard. Placing the sample materials in an inoculum derived from anaerobic digesters operating on household waste.
The molar weight of the total gas produced by the test samples is calculated and compared 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. They are kept within ast temperature and moisture tolerances.
Link to Active This link will always route to the current Active version of the asttm. Biodegradation of plastics could allow for the safe disposal of these plastics through aerobic and anaerobic solid-waste-treatment plants.
Reports shall clearly state the percentage of net gaseous carbon generation for both the test and reference samples at the completion of the test.
ASTM D5511 – Anaerobic Biodegradation
Furthermore, results shall not be extrapolated past the actual duration of the test. The values given in SI units are to be regarded as the standard. Note 1—This test method is equivalent to ISO Placing the samples in incubation vessels after the inoculum is prepared.
This test method is designed to be applicable to all plastic materials that are d55511 inhibitory to the microorganisms present in anaerobic digesters operating on household waste. If the positive control which contains cellulose continues to exhibit biodegradation then the test is considered valid and the inoculum considered alive. The testing process includes: Link to Active This link will always route to the current Active version of the standard. When the test is run to satisfaction, final carbon and methane gas readings aetm recorded and aastm incubation vessels are emptied and the samples are cleaned and weighed.
dd5511 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. 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.
Reports shall clearly state the percentage of net gaseous carbon generation for both the test and reference samples at the completion of the test. The test is allowed to run for as long as desired. 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.
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.
This test aetm 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 qstm example, leachate recirculationand temperature control for example, short-term injection of oxygen, heating of recirculated leachate 5, 6, 7.
Work Item s – proposed revisions of this standard. The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters operating only on pretreated household waste. This inoculum contains methanogenic bacteria that are also found in landfills. 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.
ASTM D – Anaerobic Biodegradation | Situ Biosciences LLC
The test materials are exposed to a methanogenic inoculum derived from anaerobic digesters zstm only on pretreated household waste. Specific hazards are given in Section 8. Furthermore, results shall not be extrapolated past the actual duration of the test.
The vessels are airtight and are not exposed to UV radiation. Depleting the oxygen dd5511 the incubation vessels after an initial burst of aerobic activity. 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 this standard. Three vessels are used for each sample, and one negative control and one positive control are prepared as well.