Role of Sulfate in Regulating Long-Term Performance and Metabolic Mechanisms of Bioelectrochemical Up-Flow Anaerobic Sludge Blanket Fed with Methanolic Wastewater DOI

Yijing Gao,

Bin Chen,

Wanjiang Li

и другие.

Опубликована: Янв. 1, 2023

To investigate the impact of sulfate (SO42-) on performance bioelectrochemical up-flow anaerobic sludge blanket (BE-UASB), COD/SO42- ratio sulfate-containing methanolic wastewater was gradually decreased from 20 to 3. The results showed that BE-UASB maintained higher COD and SO42- removal (i.e., 91% 70%, respectively) with methane production rate 278.7 mL/Lreactor/d at 10 5, ensuring efficient energy recovery. Sulfidogenesis enabled re-granulation while bioelectrocatalysis further contributed growth/proliferation biomass interwoven filaments, rods, spherical microorganisms. 16S rRNA gene analysis demonstrated promoted diversity methane-producing archaea (MPA), including Methanomethylovorans, Methanosaeta, Candidatus_Methanofastidiosum, Methanobacterium. Sulfate-reducing bacteria (SRB), mainly comprising G_norank_f_Syntrophobacteraceae, Desulfomonile, Syntrophobacter, tended be enriched bioelectrodes, which not only eased competition MPA but also achieved simultaneous in synergy MPA.

Язык: Английский

Role of Sulfate in Regulating Long-Term Performance and Metabolic Mechanisms of Bioelectrochemical Up-Flow Anaerobic Sludge Blanket Fed with Methanolic Wastewater DOI

Yijing Gao,

Bin Chen,

Wanjiang Li

и другие.

Опубликована: Янв. 1, 2023

To investigate the impact of sulfate (SO42-) on performance bioelectrochemical up-flow anaerobic sludge blanket (BE-UASB), COD/SO42- ratio sulfate-containing methanolic wastewater was gradually decreased from 20 to 3. The results showed that BE-UASB maintained higher COD and SO42- removal (i.e., 91% 70%, respectively) with methane production rate 278.7 mL/Lreactor/d at 10 5, ensuring efficient energy recovery. Sulfidogenesis enabled re-granulation while bioelectrocatalysis further contributed growth/proliferation biomass interwoven filaments, rods, spherical microorganisms. 16S rRNA gene analysis demonstrated promoted diversity methane-producing archaea (MPA), including Methanomethylovorans, Methanosaeta, Candidatus_Methanofastidiosum, Methanobacterium. Sulfate-reducing bacteria (SRB), mainly comprising G_norank_f_Syntrophobacteraceae, Desulfomonile, Syntrophobacter, tended be enriched bioelectrodes, which not only eased competition MPA but also achieved simultaneous in synergy MPA.

Язык: Английский

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