Degradable, biodegradable

Presence of other organic contaminants may inhibit biodegradation Degradation pathways for anaerobic processes not as well understood as aerobic pathways anaerobic processes typically slower... 

Note 2 Usually, degradation results in the loss of, or deterioration in useful properties of the material. However, in the case of biodegradation (degradation by biological activity), polymers may change into environmentally acceptable substances with desirable properties (see Definition 3.1... 

Biodegradation degradation rate, k = 1.5 x 10-8 nmol cell1 h 1 by species of Alcaligenes and Acinetobacter (Furukawa et al. 1978, selected, NAS 1979) ... 

Biodegradation degradation rate constants estimated to be 1.5 x io 5 h 1 in water, soil and sediment (Mackay Patterson 1991). 

Photo-biodegradation Degradation of the polymer is triggered by UV light and assisted by the presence of UV sensitisers. In this process the polymer is converted to low molecular weight material and in a second step converted to carbon dioxide and water by bacterial action. 

Biodegradation degradation rate constants k = 2.29 x 10 mol celL h from pure culture studies (Banerjee et al. 1984). 

Biodegradation degradation complete in 20 h under aerobic conditions and 48 h under anaerobic conditions in a die-away test using water from a stagnant lake (Howard 1989)... 

Biodegradation degradation c, = 2.0 d by microorganisms Pseudomonas acidovorans 256-1) from soil or waste water at 30°C (Kurane et al. 1977). 

Biodegradation Degradation of a material owing to the effect of bacteria, fungi, lichens and so on. 

Biodegradation Degradation of organic compounds is treated as a kinetic process and described by the dual Monod kinetics formulation (Bae and Rittmann, 1996). 

Mohee R, Unmar GD, Mudhoo A, Khadoo R Biodegradability of biodegradable/degradable plastic materials under aerobic and anaerobic conditions. Waste Manag 2008 28 (9) 1624-1629. 

A few investigators have been able to modify wood to produce biodegradable thermoplastics. In 1992, for example, graft copolymers of lignin residue from paper manufacture and styrene were made. The materials are formable by conventional processes, and they are biodegradable. Degradation rates increase with lignin content, which varied from 10 to 50%. ... 

Biodegradation — Degradation products water, CO2 Varieties of microorganism (at (2,108)... 

Polyethoxylated amines are not readily biodegradable. Degradation occurs by initial attack on the alkyl chain and is independent of chain length. In general, the biodegradation of ethoxylated amines worsens with increasing EO content. The converse is true for ethoxylated quats. Asymmetric polyethoxylated amines exhibit better biodegradability. 

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