About
47
Publications
5,436
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,698
Citations
Introduction
Current institution
Publications
Publications (47)
A novel multilayer nanoflake structure of manganese oxide/graphene oxide (γ-MnO2/GO) was fabricated via a simple template-free chemical precipitation method, and the modified carbon felt (CF) electrode with γ-MnO2/GO composite was used as an anode material for microbial fuel cells (MFCs). The characterization results revealed that the γ-MnO2/GO com...
Anoxygenic phototrophic bacteria is a promising catalyst for constructing bioanode, but the mixed culture with non-photosynthetic bacteria is inevitable in an open environment application. In this study, a Rhodopseudomonas-dominated mixed culture with other electrogenic bacteria was investigated for deciphering the differentiated performance on ele...
Anodic ammonium oxidation catalyzed by microorganisms holds great potential as an effective anaerobic approach for ammonium and total nitrogen removal. However, the application of this approach is constrained by a low rate of ammonium oxidation, limiting the efficiency of total nitrogen removal. To overcome this limitation, a small amount of oxygen...
Carbon dioxide can be relatively easily reduced to organic matter in a bioelectrochemical system (BES). However, due to insufficient reduction force from in‐situ hydrogen evolution, it is difficult for nitrogen reduction. In this study, MoS2 was firstly used as an electrocatalyst for the simultaneous reduction of CO2 and N2 to produce microbial pro...
Water toxicity detection, as a valuable supplement to conventional water quality measurement, is an important method for evaluating water environmental quality standards. However, the toxicity of composite pollutants is more complicated due to their mixture effects. This study developed a novel, rapid and interference-resistant detection method for...
Timely and sensitive detection of nitrite is of great significance for human health protection and water pollution treatment. However, many biosensors can only determine the comprehensive toxicity of the water, and there are few electroactive biofilm (EAB) sensors for the specific detection of pollutants. Biofilms formed by bacteria with specific f...
Microbial electrochemical sensors equipped with biocathode sensing elements have attracted a growing interest, but their startup and recovery properties remain unclear. In this study, the approach of polarity reversal was applied for the biocathode sensing element fabrication and biosensor recovery. The stimulating/suppressing effect of formaldehyd...
Concerns about energy crisis and CO 2 emission have motivated the development of microbial electrosynthesis (MES); recent studies have showed the potential of novel slurry-electrode MES. In this study, the effect of non-precious metal nanoparticles (NPs) on the performance of slurry-electrode MES was systematically evaluated in terms of chemical pr...
In this work, a toxicity monitoring microbial system (TMMS) with a nitrifying biofilm as a sensing element and cathode oxygen reduction as an electrical signal was successfully constructed for trichloroacetaldehyde (TCAL) detection. The current and nitrification rate showed a linear relationship with TCAL concentration from 0 to 100 μg/L (R2current...
Anodic ammonium oxidation mainly focuses on autotrophic process, and the removal combined with organic matter oxidation is still unclear in microbial electrolysis cell (MEC). Here, a stainless-steel tank is constructed as an MEC for anaerobic ammonium oxidation and organic matter removal. Results show that MEC increases ammonium oxidation from 3.83...
A highly sensitive electrochemical sensor for detecting low concentrations of heavy metals (Cd²⁺, Ni²⁺, Pb²⁺ and Cu²⁺) based on Geobacter-dominated biofilms was developed. The biosensor showed a high sensitivity for the determination of Cd²⁺ (109.7 μAμM⁻¹cm⁻²) and the determination of Pb²⁺ (161.7 μAμM⁻¹cm⁻²). The performance of three fitting models...
Microbial electrosynthesis (MES) is a promising technology for chemicals production driven by renewable energy. However, how the medium chain fatty acids (MCFAs) production in MES is affected by the method of chain elongation is not clear, and no direct evidence is provided yet for a simultaneous bio-utilization of CO2 and ethanol. In this study, d...
Trichloroacetic acid (TCA), a toxic substance produced in the disinfection process of wastewater treatment plants, will accumulate in the receiving water. The detection of TCA in the water can achieve the purpose of early warning. However, currently there are few reports on microbial sensors used for TCA detection, and the characteristics of their...
Real-time nitrite control in water is necessary for environmental safety and human health, and has triggered the research and development of novel detection methods. Previous studies have made great progress on enzyme-free and enzyme electrochemical sensors. However, enzyme-free sensors have low selectivity and a complex preparation process, and en...
Alternative method should be found to solve the ammonia accumulation in anaerobic digestion. Herein, electrode-dependent ammonium oxidation was successfully achieved in anaerobic single-chambered microbial electrolysis cells (MECs)under different low C/N ratios (0, 1, and 1.5), with an applied voltage of 0.6 V as well as an initial NH4⁺-N and NO3–-...
Microbial electrosynthesis is a promising technology for high-value added products generation from organic and inorganic waste. In this work, autotrophic dual−chamber microbial electrolysis cells (MECs) were set up for N2 fixation at −0.9 V vs Ag/AgCl (sat. KCl) cathodic potential under ambient conditions. Higher NH4⁺ production yield (average valu...
Aerobic biocathodes are effective construct for the simultaneous nitrification and denitrification, but the disturbance of cathodic oxygen reduction on ammonia oxidation and denitrification remains unclear. In this study, we revealed the oxygen reduction peak at -0.4 V (versus silver/silver chloride) by cyclic voltammetry analysis at a cathode with...
For controlling heavy metal pollution, the utilization of carboxylic acids (CAs) combined with sulfate-reducing bacteria (SRB) for continuous and stable remediation of Cr (VI)-contaminated soil was comprehensively investigated. At pH 3, citrate and lactate had photocatalysis characteristics that enabled them to reduce high Cr (VI) concentrations. T...
Leachates and landfill gas (LFG) are the major problems for closed landfills (CL) and cause significant threats to receiving waterbody and ambient air quality. In this study, a field pilot-scale CL with ex situ nitritation/in situ denitritation process was constructed and operated continuously under wide temperature variations. The effect of low te...
Rechargeable microbial electrochemical systems can be used as renewable energy storage systems or as potable bioelectronics devices. In this study, a bioelectrode capable of bidirectional extracellular electron transfer was firstly introduced to construct the rechargeable microbial fuel cell (MFC). The performance of rechargeable MFC was enhanced w...
Microbial electrosynthesis (MES) technology employs electrotrophic microbes as biocatalysts to produce chemicals from CO2. The application of a slurry electrode can enlarge the surface area to volume ratio, and membrane electrolysis (ME) for on-line extraction can solve the problem of product inhibition. This study constructed a novel dual-chamber...
In this study, anodic ammonia oxidation and denitrification were performed in single-chamber bioelectrochemical systems at a wide range of anodic potentials (-400 to +400 mV) versus Ag/AgCl. The low coulombic efficiencies (∼30.84%) in reactors were mainly due to electrons being transferred to atmospheric oxygen through the electrode and reversal of...
Chain elongation has been proposed as a novel secondary fermentation process for the production of medium chain fatty acids as organic waste valorization. However, a strategy to effectively control the product spectrum of the chain elongation process is required. This study evaluated the effect of electro-fermentation on the mixed culture chain elo...
The degradation of fipronil was investigated in microbial fuel cells (MFCs). Almost 79% of 30 mg/L fipronil was rapidly degraded within 12 h by MFC biofilm. Based on the constructed quadratic polynomial model, a maximum fipronil degradation rate of 94.22% could be theoretically achieved at pH of 7.01, 33.39 °C, and the initial fipronil concentratio...
A novel macroscale porous structure electrode, molybdenum carbide nanoparticles-modified carbonized cotton textile (Mo2C/CCT), was synthesized by a facile two-step method and used as an anode material for high-performance microbial fuel cells (MFCs). The characterization results show that the carbonized cotton textile modified with Mo2C nanoparticl...
Heavy metal pollution, especially lead pollution in water, has been a growing concern due to the toxicity of lead to human or other beings. According to previous reports, bioelectrochemical systems (BESs) showed significant advantages in heavy metal ions removal, but have not been considered for Pb2+ removal. In this study, a novel BES with stainle...
In this study, ammonia was used as an anode substrate for cathode hydrogen generation by controlling the anode potential in two compartment bioelectrochemical systems. During batch experiments, the total quantity of electric charge increased from 129 C at 10 mM ammonia to 185 C at 20 mM ammonia, and it reached 281 C at 30 mM ammonia. Besides, the n...
Denitrification and dissimilatory nitrate reduction to ammonium (DNRA) were considered two alternative pathways of dissimilatory nitrate reduction. In this study, we firstly reported that both denitrification and DNRA occurred in Pseudomonas alcaliphila strain MBR with an electrode as the sole electron donor in a double chamber bio-electrochemical...
In order to research the influences of lead dioxide (PbO2) on reduction and electrogenesis capacity in microbial fuel cell (MFC), titanium-based lead dioxide (PbO2/Ti) was prepared via an electrodeposition technique and applied in a doublechamber MFC as the cathode material. The valence state, crystal form, morphological character and electrochemic...
In this paper, we reported microbially catalyzed sulfate reduction with polarized electrode (− 400 mV vs. Ag/AgCl) as the sole electron donor. In potentiostatic batch assays, sulfate was reduced to sulfide, at rates falling in the range of 6.70–12.16 equiv./l d. Cyclic voltammetry tests revealed that the sulfate-reducing biofilms could accept elect...
Dual-chamber microbial fuel cells (MFCs) were constructed by inoculating anaerobic sludge. The extracellular electron transfer mechanism of mixed bacteria in MFC anode chamber, the utilization of substrates and cathodic electron acceptors were investigated. The results showed that the mixed bacteria formed thick biofilm on carbon felt anode to faci...
The characteristics and influence factors of the reduction of complexes TiF62" to titanium were investigated by Pseudomonas sp. MBR with organic carbon source as electron donor in the presence of oxygen. The results indicated that the initial concentration of TiF62- could be 0.5-8.0 mmol/L, the optimum pH was 7.0, and citrate was the best carbon so...
In this paper, we reported a kind of exoelectrogens, Pseudomonas alcaliphila (P. alcaliphila) strain MBR, which could excrete phenazine-1-carboxylic acid (PCA) to transfer electron under alkaline condition in microbial fuel cells (MFCs). The electrochemical activity of strain MBR and the extracellular electron transfer mechanism in MFCs were evalua...
Pseudomonas sp. MBR, a gram-negative bacterium, reduced the soluble oxyanion tellurite to metallic tellurium supplied with organic carbon source as electron donor in the presence of oxygen. This study examined the characteristics of the reduction of tellurite to tellurium by this strain. The result showed that Pseudomonas sp. MBR was able to reduce...
We studied the reduction of soluble and highly toxic selenite to elemental red selenium, under aerobic condition by Pseudomonas alcaliphila MBR, with organic carbon as electron donor.
The strain could grow under pH 6-11 and resist to high concentration of selenite with the minimal inhibitory concentration of 50 mmol/L. After 5 days, the strain used...
A pure beta-molybdenum carbide (M(O2)C) with a Brunauer-Emmett-Teller (BET) special surface area of 77.5 m2/g, prepared by solution derived precursor, was used as anodic catalyst of microbial fuel cell (MFC) based on Klebsiella pneumoniae (K. pneumoniae). The electrochemical activity of the prepared M(O2)C and the performance of the MFC were invest...
In this paper, three manganese dioxide materials, alpha-MnO(2), beta-MnO(2), gamma-MnO(2) were tested as alternative cathodic catalysts to platinum (Pt) in air-cathode microbial fuel cells (MFCs). Prepared via hydrothermal method, the manganese dioxides were characterized by X-ray powder diffraction patterns (XRD), the Brunauer-Emmett-Teller (BET)...
In this paper we reported a novel microbial fuel cell (MFC) based on Klebsiella pneumoniae (K. pneumoniae) strain L17 biofilm, which can utilize directly starch and glucose to generate electricity. The electrochemical activity of K. pneumoniae and the performance of the MFC were evaluated by cyclic voltammetry, scanning electron microscope (SEM) an...
