ISSN:
1572-9729
Schlagwort(e):
anaerobic degradation
;
anaerobic sludge
;
organic acids
;
poly-3-hydroxybutyrate
;
poly-3-hydroxybutyrate-co-3-hydroxyvalerate
;
test methods
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Energietechnik
,
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Abstract The anaerobic degradation of the polyesterspoly-3-hydroxybutyrate (PHB) andpoly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) wasinvestigated with special regard to intermediateproducts, kinetics, and yields. During the degradationof PHBV acetate, propionate, n-butyrate, andn-valerate were detected. Additionally,3-hydroxybutyrate and 3-hydroxyvalerate and fourdimeric esters of these two molecules were identifiedby GC-MS measurements. Three different test systemsfor the anaerobic degradation of polyesters werestudied. It was not possible to get reproducibleresults by means of the Anaerobic Sturm-test, a simplesystem based on carbon dioxide measurement. Secondly,a system based on the GC measurement of accumulatedorganic acids was investigated. A degradation of 90%in two days was calculated by a carbon balance. Bestresults were reached with the third test system basedon the measurement of methane with a gas meter. Adegradation of 99% was observed within 30 days.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1008203525476
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