Lignin is a major part of the recalcitrant fraction of lignocellulose and in nature its degradation occurs through oxidative enzymes along with microbes mediated oxidative chemical actions. Oxygen assisted wet-explosion pretreatment promotes lignin solubility and leads to an increase biodegradation of lignin during anaerobic digestion processes. The pretreatment of feedlot manure was performed in a 10 L reactor at 170 °C for 25 min using 4 bars oxygen and the material was fed to a continuous stirred tank reactor operated at 55 °C for anaerobic digestion. Methane yield of untreated and pretreated material was 70 ± 27 and 320 ± 36 L/kg-VS/Day, respectively, or 4.5 times higher yield as a result of the pretreatment. Aliphatic acids formed during the pretreatment were utilized by microbes. 44.4% lignin in pretreated material was actually converted in the anaerobic digestion process compared to 12.6% for untreated material indicating the oxygen assisted explosion promoted lignin degradation.
- About
- Team
- Professors
- Research associates
- Blohm, Marina
- Boie, Wulf
- Büttner, Clara
- Cußmann, Ilka
- Dettner, Franziska
- Fleischer, Christian
- Freißmann, Jonas
- Fritz, Malte
- Hackenberg, Tabitha
- Hasan, Mominul
- Hilpert, Simon
- Irmansyah Siregar, Yudha
- Laros, Simon
- Md Nasimul Islam Maruf
- Müller, Ulf Philipp
- Sadat, Fahim
- Vanegas-Cantarero, Maria-Mercedes
- Weber, Samanta Alena
- Wiechers, Eva
- Witte, Francesco
- Former colleagues
- Research
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