An inert solid medium for simulation of material biodegradation in compost and achievement of carbon balance
| Autor: | Antoine Longieras, Lan Tighzert, Gilbert Bureau, Alain Copinet |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Inert
Materials science Polymers and Plastics Compost Starch Extraction (chemistry) Mineralogy chemistry.chemical_element Biomass engineering.material Biodegradation Vermiculite Condensed Matter Physics Pulp and paper industry complex mixtures chemistry.chemical_compound chemistry Mechanics of Materials Materials Chemistry engineering Carbon |
| Zdroj: | Polymer Degradation and Stability. 83:187-194 |
| ISSN: | 0141-3910 |
| Popis: | The aim of this work was to create a vermiculite-based inert solid medium which could simulate compost medium and enable us to achieve complete carbon balances. As a first attempt, we decided to use starch to test several vermiculite media. We have compared the results obtained for these media with those obtained for starch degradation in compost, according to the shape of the mineralisation curves. The results obtained for compost and one activated vermiculite medium are very similar. This activated vermiculite medium was considered to be suitable to simulate starch degradation in compost. In this case, we have achieved complete carbon balances at different points in the test by taking samples in the medium. Different extraction steps have been performed on these samples to separate soluble carbon from biomass, and also from starch carbon remaining in the medium. After quantifying these different parts, we could establish complete carbon balances with a suitable accuracy. |
| Databáze: | OpenAIRE |
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