Co-digestion of Hybrid Pennisetum and Peanut Shell After Adding TiO2 Nanoparticles: Focusing on the Synergistic Effects on Methane Production
Hongmei Zhao1,2* and Jiang Meng2
1School of Science, Yunnan Agricultural University, Kunming, China
2Key Laboratory of Medicinal Chemistry for Natural Resources, Chemistry School of Chemical Science and Technology, Yunnan University, Kunming, China
*Corresponding Author: Hongmei Zhao, Hongmei Zhao, School of Science, Yunnan Agricultural University,Kumming, China.
July 20, 2021; Published: August 13, 2021
Anaerobic digestion is a widely accepted method to treat wastes such as peanut shell. The energy and nutrients are simultaneously recovered by this method. The objective of this study was to elucidate the effect of TiO2 nanoparticles in co-digestion of hybrid Pennisetum and peanut shell under mesophilic conditions. The results demonstrated the methane (CH4) production was improved by adding the TiO2 nanoparticles. The cumulative ga s production is best (up to 11,133.3 mL) by adding 0.15% nano-TiO2 particles. The microbial community analysis showed that Methanobacterium and Methanosarcina were enriched in the presence of TiO2 nanoparticles indicating that TiO2 can improve CH4 production by stimulating the growth of methanogens.
Keywords: Anaerobic Fermentation; Methane Production; TiO2 Nanoparticles; Hybrid Pennisetum; Peanut Shell
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