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Capacitive bimetallic redox cycles and ligand-to-metal charge transfer to Boost denitrification with Ni sup II /sup /Fe sup II /sup -Gallic acid phenolic networks

Author(s): Yu S; Jin Y; Guo T; Li H; Liu W; Chen Z; Wang X; Guo J;

Biological denitrification is limited by slow nitrate (NO3-) reduction due to low electron transfer efficiency, unsatisfactory community functional efficiency and insufficient metabolic activity of microbial communities. To overcome these challenges, Ni2+ and Fe2+ were incorporated with gallic acid (GA) to form bimetallic polyphenol networks (NiFeGA BPNs) ...

Article GUID: 41707775


Spatio-temporal distribution of AOD and its response to regional energy consumption and air pollution factors in China

Author(s): Su Y; Chen X; Guo J; Yang A;

Aerosols serve as crucial indicators of air pollution assessment, and exert significant effects on climate change, ecological environment, and human health. However, the relationship between energy consumption, a significant contributor to air pollution, and aerosols in different economic development zones in China remains understudied. This paper employs ...

Article GUID: 41308902


Pseudocapacitive MXene@Fe-TA ternary mediator enhances denitrification via optimized electron transfer and microbial regulation in wastewater treatment

Author(s): Pan S; Wang X; Guo T; An H; Guo Y; Chen Z; Lian J; Guo J;

Inefficient electron transfer is one of the main challenges in practical denitrification applications. To address this issue, a novel ternary mediator functional material (Mxene@Fe-TA) was successfully synthesized, which exhibited pseudocapacitive properties to facilitate electron mediation and distribution. Batch experiments revealed that 50 mg/L MXene@F ...

Article GUID: 41043789


Engineered iron-sulfur carriers for efficient mixotrophic and sulfur autotrophic denitrification in low carbon to nitrogen ratio municipal wastewater: Mechanisms of biofilm enhancement and electron transfer promotion

Author(s): Yu S; Zhang X; Guo T; Li H; Liu W; Chen Z; Wang X; Ren B; Guo J;

Sulfur autotrophic denitrification (SAD) offers a sustainable solution for nitrogen removal in low carbon to nitrogen ratio (C/N) municipal wastewater, yet its efficiency and startup time pose significant challenges. To overcome these, we developed iron-sulfur-modified carriers (FeS@MC) and integrated them into an in-situ sequencing batch reactor (S-Fe-SB ...

Article GUID: 40712941


Deep clustering analysis via variational autoencoder with Gamma mixture latent embeddings

Author(s): Guo J; Fan W; Amayri M; Bouguila N;

This article proposes a novel deep clustering model based on the variational autoencoder (VAE), named GamMM-VAE, which can learn latent representations of training data for clustering in an unsupervised manner. Most existing VAE-based deep clustering methods use the Gaussian mixture model (GMM) as a prior on the latent space. We employ a more flexible asy ...

Article GUID: 39662201


Study on the mechanism of regulating micromolar Fe utilization and promoting denitrification by guanosine monophosphate (GMP) based multi-signal functional material Hematin@Fe/GMP

Author(s): Hao Y; Guo T; Li H; Liu W; Chen Z; Wang X; Guo J;

A novel multi-signal functional material consisting of Hematin, Fe, and guanosine monophosphate (GMP) was successfully constructed (Hematin@Fe/GMP) to enhance denitrification efficiency based on the signal network regulation of electron transfer, micromolar Fe utilization, and microbial community. Hematin@Fe/GMP enhanced nitrate reduction rate by 2.33-fol ...

Article GUID: 39657473


Amorphous Cu/Fe nanoparticles with tandem intracellular and extracellular electron capacity for enhancing denitrification performance and recovery of co-contaminant suppressed denitrification

Author(s): Fu J; Guo T; Li H; Liu W; Chen Z; Wang X; Guo J;

In this study, a functionally stable insoluble Cu/Fe nanoparticles (Cu/Fe NPs) were synthesized and applied denitrification with different contaminants. The results showed that 50 mg/L Cu/Fe NPs increased NO3--N reduction rate up to 14.3 mg/(L·h) about 3 folds compared with the control system (4.7 mg/(L·h)), and Cu/Fe NPs exhibited excellent restorative e ...

Article GUID: 39542060


Fe/GMP functional nanomaterial enhancing the denitrification efficiency by bi-signal regulation: Electron transfer and microbial community

Author(s): Hao Y; Guo T; Li H; Liu W; Chen Z; Zhang W; Wang X; Guo J;

A novel functional nanomaterial composed of guanosine monophosphate (GMP) and Fe enhanced denitrification efficiency by regulating electron transfer and microbial community. Fe/GMP enhanced nitrate (NO3-) degradation rates by 3.00-fold in serum vial batch experiments, with a rate constant of 17.39 mg/(L·h) in sequencing batch reactor. Fe/GMP-mediated inte ...

Article GUID: 39326537


Corrigendum to "Te(IV) bioreduction in the sulfur autotrophic reactor: Performance, kinetics and synergistic mechanism"

Author(s): He Y; Guo J; Song Y; Chen Z; Lu C; Han Y; Li H; Hou Y;

No abstract

Article GUID: 35623146


Te(IV) bioreduction in the sulfur autotrophic reactor: Performance, kinetics and synergistic mechanism

Author(s): He Y; Guo J; Song Y; Chen Z; Lu C; Han Y; Li H; Hou Y;

A laboratory-scale sulfur autotrophic reactor (SAR) was first constructed for treating tellurite [Te(IV)] wastewater. The SAR had excellent Te(IV) bioreduction efficiency (90-96%) at 5-30 mg/L and conformed to the First-order kinetic model. The Te(IV) bioreduction was elaborated deeply from extracellular polymeric substances (EPS) functions, microbial met ...

Article GUID: 35228038


Bioinspired facilitation of intrinsically conductive polymers: Mediating intra/extracellular electron transfer and microbial metabolism in denitrification

Author(s): Guo T; Lu C; Chen Z; Song Y; Li H; Han Y; Hou Y; Zhong Y; Guo J;

Intrinsically conductive polymers, polyaniline and polyaniline sulfonate (PASAni) were used to explore their effect on denitrification. Denitrification was accelerated 1.90 times by 2 mM PASAni and the possible mechanisms were mainly attributed to the accelerated electron transfer and the enhanced microbial metabolism activity. Intracellular electron tran ...

Article GUID: 35124084


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