Details

Autor(en) / Beteiligte

• Wang, F
• Hidaka, T
• Oishi, T
• Osumi, S
• Tsubota, J
• Tsuno, H

Titel

Degradation characteristics of polylactide in thermophilic anaerobic digestion with hyperthermophilic solubilization condition

Ist Teil von

• Water science and technology, 2011-01, Vol.64 (11), p.2135

Ort / Verlag

England

Erscheinungsjahr

2011

Quelle

MEDLINE

Beschreibungen/Notizen

• To test whether hyperthermophilic treatment promotes polylactide (PLA) dissolution and methane conversion under anaerobic digestion conditions, a single thermophilic control reactor (55 °C) and a two-phase system consisting of a hyperthermophilic reactor (80 °C) and a thermophilic reactor (55 °C) were continuously fed with a mixture of PLA and artificial kitchen garbage. In Runs 1 and 2, the PLA dissolution ratios in the two-phase system were 79.2 ± 6.5% and 85.2 ± 7.0%, respectively, higher than those of the control. Batch experimental results indicated that hyperthermophilic treatment could promote PLA dissolution to a greater degree as compared with single thermophilic treatment and that ammonia addition also had a promotional effect on PLA dissolution. In the two-phase system, after hyperthermophilic treatment, dissolved PLA was converted to methane gas under the subsequent thermophilic condition.