ISO 14853 :
Determination of the ultimate anaerobic biodegradation of plastic materials in an aqueous system — Method by measurement of biogas production
ISO 14853 specifies a rigorous testing approach, measuring biogas production by anaerobic microorganisms. Let’s delve into the details of this eco-friendly testing method, designed to assess the biodegradation potential of various plastic materials.
Anaerobic Biodegradation Assessment :
ISO 14853 offers a reliable way to evaluate the ultimate anaerobic biodegradability of plastics by anaerobic microorganisms. The method measures biogas production to determine the degree of biodegradation in an aqueous system.
Extended Testing Period :
The test material is exposed to sludge for up to 90 days, surpassing the typical sludge retention time in anaerobic digesters. Industrial sites may have even longer retention times, ensuring comprehensive evaluation.
Applicable Materials :
This versatile testing method applies to a wide range of plastic materials, including :
Natural and/or synthetic polymers, copolymers, or mixtures thereof. Plastic materials containing additives such as plasticizers, colorants, or other compounds and water-soluble polymers can also be tested.
Materials that do not inhibit the microorganisms present in the inoculum. Inhibitory effects can be assessed using an inhibition control or another appropriate method, such as ISO 13641. If the test material proves inhibitory, alternatives like a lower test concentration, different inoculum, or a pre-exposed inoculum can be utilized.
Keywords :
Ultimate anaerobic biodegradation testing, plastic materials, biogas production, sustainable testing approach, aqueous system.