Enhancing mesophilic methanogenesis in oleate-rich environments through optimized micro-aeration pretreatment

Copyright © 2024. Published by Elsevier Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 193(2024) vom: 10. Dez., Seite 171-179
1. Verfasser: Li, Xiang (VerfasserIn)
Weitere Verfasser: Yan, Yi-Juan, Wu, Hong-Ming, Ibrahim Gadow, Samir, Jiang, Hongyu, Kong, Zhe, Hu, Yong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Anaerobic digestion Lipid-rich environment Methanogenesis pathway Micro-aeration pretreatment Microbial composition
LEADER 01000naa a22002652 4500
001 NLM381477258
003 DE-627
005 20241212233242.0
007 cr uuu---uuuuu
008 241212s2024 xx |||||o 00| ||eng c
024 7 |a 10.1016/j.wasman.2024.12.005  |2 doi 
028 5 2 |a pubmed24n1629.xml 
035 |a (DE-627)NLM381477258 
035 |a (NLM)39662327 
035 |a (PII)S0956-053X(24)00637-8 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Li, Xiang  |e verfasserin  |4 aut 
245 1 0 |a Enhancing mesophilic methanogenesis in oleate-rich environments through optimized micro-aeration pretreatment 
264 1 |c 2024 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Revised 11.12.2024 
500 |a published: Print-Electronic 
500 |a Citation Status Publisher 
520 |a Copyright © 2024. Published by Elsevier Ltd. 
520 |a Micro-aeration pretreatment has emerged as a promising technology for improving the performance of anaerobic bioreactors in the treatment of lipid-rich organic waste, particularly in mitigating the accumulation of long-chain fatty acids (LCFAs). Micro-aeration intensity is a critical factor in optimizing substrate hydrolysis and methanogenesis efficiency. In this study, optimal micro-aeration intensities for acetoclastic (30 mL-air/g-COD) and overall methanogenesis (7.5 mL-air/g-COD) were initially determined using acetate and glucose as substrates, respectively. Subsequently, the addition of 0.5 mM oleate (a typical LCFA) increased cumulative methane production by 22.1 % when acetate was used as the substrate after 30 mL-air/g-COD micro-aeration pretreatment. Conversely, it decreased cumulative methane production by 17.3 % when glucose was used as the substrate after 7.5 mL-air/g-COD micro-aeration pretreatment. Additionally, the population of facultative hydrolysis microorganisms, such as the genus Pseudomonas, increased by 25.7 % and 27.8 % when acetate and glucose were used as substrates, respectively. Furthermore, the predominant methane-producing archaea, including the genus Methanosarcina, increased by 27.3 % when acetate was used as the substrate, while the genus Methanosaeta decreased by 65.3 % when glucose was used as the substrate. Collectively, these findings provide insights into the methanogenesis pathway under optimal micro-aeration pretreatment conditions, guiding future research in this field 
650 4 |a Journal Article 
650 4 |a Anaerobic digestion 
650 4 |a Lipid-rich environment 
650 4 |a Methanogenesis pathway 
650 4 |a Micro-aeration pretreatment 
650 4 |a Microbial composition 
700 1 |a Yan, Yi-Juan  |e verfasserin  |4 aut 
700 1 |a Wu, Hong-Ming  |e verfasserin  |4 aut 
700 1 |a Ibrahim Gadow, Samir  |e verfasserin  |4 aut 
700 1 |a Jiang, Hongyu  |e verfasserin  |4 aut 
700 1 |a Kong, Zhe  |e verfasserin  |4 aut 
700 1 |a Hu, Yong  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 193(2024) vom: 10. Dez., Seite 171-179  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnns 
773 1 8 |g volume:193  |g year:2024  |g day:10  |g month:12  |g pages:171-179 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2024.12.005  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 193  |j 2024  |b 10  |c 12  |h 171-179