Novel nitrogen-doped biochar supported magnetite promotes anaerobic digestion: Material characterization and metagenomic analysis

Bioresource Technology, Год журнала: 2022, Номер 369, С. 128492 - 128492

Опубликована: Дек. 13, 2022

Язык: Английский

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Deciphering different effects of ZVI and NaOH on metabolic characteristics in the process of methanogenesis recovery from VFA suppression

Journal of Environmental Management, Год журнала: 2023, Номер 336, С. 117686 - 117686

Опубликована: Март 8, 2023

Dosing zero valent iron (ZVI) or sodium hydroxide (NaOH) is the common method of addressing acidification in anaerobic digestion (AD) systems; however, few studies have discussed and compared their effects on microbial metabolism. In present study, syntrophy metabolic pathways under ZVI NaOH regulation are comparatively analyzed through network analysis metagenomic/metaproteomic analyses. CH4 yield reactor was 414 mL/gVS, an increase 23% when with that dosing (336 mL/gVS). The methanogenesis recovery period (37 days) shorter than (48 days). Co-occurrence networks indicated promoted Methanoculleus Methanosarcina to establish a complex syntrophic association SAO bacteria (Syntrophaceticus Aminobacterium) acetogens (Syntrophomonas), strengthening SAO-hydrogenotrophic (HM) acetoclastic (AM) simultaneously. Metagenomic showed relative abundance mcrA fwdB higher 27% reactor. Furthermore, metaproteomics analysis, much more enzymes related glucose degradation, bioconversion butyric acid pyruvate, conversion formate acetate CO2, production from CO2 were significantly upregulated (fold change control [FC] > 1.5, p < 0.05). results study enhance our understanding methanogenic mechanisms ZVI, providing theoretical basis for its practical application AD systems experiencing VFA suppression.

Язык: Английский

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Revealing the mechanism of novel nitrogen-doped biochar supported magnetite (NBM) enhancing anaerobic digestion of waste-activated sludge by sludge characteristics

Journal of Environmental Management, Год журнала: 2023, Номер 340, С. 117982 - 117982

Опубликована: Апрель 27, 2023

Язык: Английский

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Investigating the synergic role of asynchronous dosed protease and lysozyme for facilitating excess sludge solubilization and acidogenic fermentation

The Science of The Total Environment, Год журнала: 2023, Номер 885, С. 163759 - 163759

Опубликована: Май 3, 2023

Язык: Английский

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Effects of micron-scale zero valent iron on behaviors of antibiotic resistance genes and pathogens in thermophilic anaerobic digestion of waste activated sludge

Bioresource Technology, Год журнала: 2023, Номер 376, С. 128895 - 128895

Опубликована: Март 16, 2023

Язык: Английский

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