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Erschienen in: Biomass Conversion and Biorefinery 2/2024

14.03.2022 | Original Article

Effect of cow dung on anaerobic digestion characteristics of poplar fuel ethanol wastewater

verfasst von: Pingping Deng, Xiaofan Yan, Ruixia Liu, Tingting Ding, Jienan Chen, Zhiping Wu

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 2/2024

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Abstract

Direct disposal of poplar fuel ethanol wastewater (PFEW) and incineration of cow dung caused serious harm to the environment. To investigate the effect of cow dung on the mesophilic digestion of PFEW, the anaerobic mono-digestion (PFEW) and co-digestion (PFEW + cow dung) were performed, respectively. The maximum cumulative methane production of mono-digestion was 254.7 mL/gVS when the substrate concentration of PFEW was 2.58 g/LVS, which was 22.16% higher than that of co-digestion. The volatile fatty acids (VFAs) testing results indicated that the degradation of propionic acid by acetogen was inhibited and the methane process was weakened in anaerobic co-digestion. The analysis of the microbial community showed that norank f Bacteroidetes vadinHA17, Clostridium sensu stricto and Leptolinea were acid-producing bacteria, Anaerolineaceae was acetogen, Methanosarcina and Methanobacterium were methanogens, of which appeared in both co-digestion and mono-digestion. Psychrobacillus which was only found in the co-digestion inhibited the growth of acetogen and affected the methane production, which revealed the exogenous inhibitory effect of cow dung on the anaerobic digestion of PFEW.

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Metadaten
Titel
Effect of cow dung on anaerobic digestion characteristics of poplar fuel ethanol wastewater
verfasst von
Pingping Deng
Xiaofan Yan
Ruixia Liu
Tingting Ding
Jienan Chen
Zhiping Wu
Publikationsdatum
14.03.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 2/2024
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-022-02549-3

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