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Respirometric biodegradation tests

Reuschenbach, P. Pagga, U. Strotmann, U. A critical comparison of respirometric biodegradation tests based on OECD 301 and related test methods. Water Res. 2003, 37, 1571-1582. [Pg.164]

HD values were synthesized by controlled acetylation of commercial PVA (HD = 99%) and submitted to biodegradation tests in aqueous medium, mature compost and soil by using respirometric procedures [121]. Reacetylated PVA samples characterized by HD of between 25 and 75% underwent extensive mineiahzation when buried in solid media, while PVA (HD = 99%) showed recalcitrance to biodegradation under those conditions. An opposite trend was observed in aqueous solution, in the presence of PVA-acclimated microorganisms. In... [Pg.152]

State of the polymer (visual assessment, calculation of the loss of mass, tensile testing, etc.) compared with the samples on the non-inoculated and the sterile media (Fignre 14.6). This strictly empirical method was not intended to show the biodegradability of materials in contact. The norm NF EN ISO 846 describes this methodology, but these kinds of tests are insufficient to show the biodegradability of the tested material, as they are too prone to subjective interpretation. However, they can be useful to show and reinforce other types of tests (particnlarly respirometric). [Pg.317]

Can I officially declare that my material is biodegradable based on one or several (non-) respirometric and (non-) standardized tests of biodegradation ... [Pg.336]

In the present contribution an investigation on the biodegradation of blends and graft copolymers of PHB of both natural and synthetic origin and PVA/PVAc blends is reported. The evaluation of the effects of each component in blends and copolymers on both the overall extent of biodegradation and the biodegradation of counterparts, was investigated in aqueous media and in soil by means of respirometric tests. [Pg.330]

Biodegradation of these products has been tested in different environments [90]. Ten months of aerobic biological treatment performed by a high-sensitivity respirometric test, brought to the degradation of more than 90% w/w of a product consisting of 60% of maize starch and... [Pg.20]

R. Solaro, A. Corti and E. Chiellini, A new respirometric test simulating soil burial conditions for the evaluation of polymer biodegradation , J Environ Polym Degrad, 1998,6,203-8. [Pg.53]

Figure 6-11 Biodegradation curves of a PVA-based film and filter paper recorded in simulated soil burial respirometric tests. Reprinted with permission from [116],... Figure 6-11 Biodegradation curves of a PVA-based film and filter paper recorded in simulated soil burial respirometric tests. Reprinted with permission from [116],...
Kijchavengkul T, Auras R., Rubino M., Ngouajio M., Fernandez R.T. Development of an automatic laboratory-scale respirometric system to measure polymer biodegradability. Polymer Testing... [Pg.160]

Complete biodegradability of the product, measured through respirometric tests like ASTM D5338-92, ISO/CD14855 and CEN proposal xxl or the modified Sturm test ASTM 5209, in a time period compatible with the composting technology (few months). [Pg.104]

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See also in sourсe #XX -- [ Pg.142 , Pg.145 ]



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