Enhanced electricity generation and tetracycline removal of bioelectro-Fenton with electroactive biofilm induced by multi external resistance

Chemosphere ◽  
2021 ◽  
pp. 133070
Author(s):  
Xiangru Song ◽  
ChungHyok Jo ◽  
Minghua Zhou
Keyword(s):  
Electricity Generation ◽  
External Resistance

Simultaneous pollutant removal and electricity generation in denitrifying microbial fuel cell with boric acid-borate buffer solution

2015 ◽  
Vol 71 (5) ◽  
pp. 783-788 ◽  
Author(s):  
Gang Chen ◽  
Shaohui Zhang ◽  
Meng Li ◽  
Yan Wei
Keyword(s):  
Fuel Cell ◽  
Boric Acid ◽  
Nitrogen Removal ◽  
Electricity Generation ◽  
Solution Concentration ◽  
Pollutant Removal ◽  
Borate Buffer ◽  
Borate Buffer Solution ◽  
External Resistance ◽  
Buffer Solution

A double-chamber denitrifying microbial fuel cell (MFC), using boric acid-borate buffer solution as an alternative to phosphate buffer solution, was set up to investigate the influence of buffer solution concentration, temperature and external resistance on electricity generation and pollutant removal efficiency. The result revealed that the denitrifying MFC with boric acid-borate buffer solution was successfully started up in 51 days, with a stable cell voltage of 205.1 ± 1.96 mV at an external resistance of 50 Ω. Higher concentration of buffer solution favored nitrogen removal and electricity generation. The maximum power density of 8.27 W/m3 net cathodic chamber was obtained at a buffer solution concentration of 100 mmol/L. An increase in temperature benefitted electricity generation and nitrogen removal. A suitable temperature for this denitrifying MFC was suggested to be 25 °C. Decreasing the external resistance favored nitrogen removal and organic matter consumption by exoelectrogens.

Performance of denitrifying microbial fuel cell subjected to variation in pH, COD concentration and external resistance

2013 ◽  
Vol 68 (1) ◽  
pp. 250-256 ◽  
Author(s):  
Jin-Tao Li ◽  
Shao-Hui Zhang ◽  
Yu-Mei Hua
Keyword(s):  
Fuel Cell ◽  
Chemical Oxygen Demand ◽  
Microbial Fuel Cell ◽  
Electricity Generation ◽  
Oxygen Demand ◽  
Pollutant Removal ◽  
Acidic Ph ◽  
External Resistance ◽  
Weakly Alkaline ◽  
Effects Of Ph

The effects of pH, chemical oxygen demand (COD) concentration and external resistance on denitrifying microbial fuel cell were evaluated in terms of electricity generation characteristics and pollutant removal performance. The results showed that anodic influent with weakly alkaline or neutral pH and cathodic influent with weakly acidic pH favored pollutant removal and electricity generation. The suitable influent pH of the anode and cathode were found to be 7.5–8.0 and 6.0–6.5, respectively. In the presence of sufficient nitrate in the cathode, higher influent COD concentration led to more electricity generation and greater pollutant removal rates. With an anodic influent pH of 8.0 and a cathodic influent pH of 6.0, an influent COD concentration of 400 mg/L was deemed to be appropriate. Low external resistance favored nitrate and COD removal. The results suggest that operation of denitrifying microbial fuel cell at a lower external resistance would be desirable for pollutant removal but not electricity generation.

Effect of cathode electron acceptors on simultaneous anaerobic sulfide and nitrate removal in microbial fuel cell

2015 ◽  
Vol 73 (4) ◽  
pp. 947-954 ◽  
Author(s):  
Jing Cai ◽  
Ping Zheng ◽  
Qaisar Mahmood
Keyword(s):  
Potassium Permanganate ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Nitrate Removal ◽  
Potassium Ferricyanide ◽  
Electron Acceptors ◽  
External Resistance ◽  
Simultaneous Treatment ◽  
Substrate Removal ◽  
End Products

The current investigation reports the effect of cathode electron acceptors on simultaneous sulfide and nitrate removal in two-chamber microbial fuel cells (MFCs). Potassium permanganate and potassium ferricyanide were common cathode electron acceptors and evaluated for substrate removal and electricity generation. The abiotic MFCs produced electricity through spontaneous electrochemical oxidation of sulfide. In comparison with abiotic MFC, the biotic MFC showed better ability for simultaneous nitrate and sulfide removal along with electricity generation. Keeping external resistance of 1,000 Ω, both MFCs showed good capacities for substrate removal where nitrogen and sulfate were the main end products. The steady voltage with potassium permanganate electrodes was nearly twice that of with potassium ferricyanide. Cyclic voltammetry curves confirmed that the potassium permanganate had higher catalytic activity than potassium ferricyanide. The potassium permanganate may be a suitable choice as cathode electron acceptor for enhanced electricity generation during simultaneous treatment of sulfide and nitrate in MFCs.

Loading rate and external resistance control the electricity generation of microbial fuel cells with different three-dimensional anodes

2008 ◽  
Vol 99 (18) ◽  
pp. 8895-8902 ◽  
Author(s):  
Peter Aelterman ◽  
Mathias Versichele ◽  
Massimo Marzorati ◽  
Nico Boon ◽  
Willy Verstraete
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Loading Rate ◽  
Three Dimensional ◽  
External Resistance

Production of electricity from surplus sludge using a single chamber floating-cathode microbial fuel cell

2009 ◽  
Vol 60 (9) ◽  
pp. 2399-2404 ◽  
Author(s):  
Zhihua Liu ◽  
Xiaoming Li ◽  
Bin Jia ◽  
Yao Zheng ◽  
Li Fang ◽  
...  
Keyword(s):  
Stationary Phase ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Low Voltage ◽  
Internal Resistance ◽  
External Resistance ◽  
Single Chamber ◽  
Voltage Range ◽  
Rapid Fall ◽  
Sludge Recycling

A single-chamber, membrane-less and floating-cathode microbial fuel cells (MFC) was successfully started up using surplus sludge as fuel without adding carbohydrate after 20 days. The electricity generation of the MFC was investigated. The results showed that the obtained maximum voltage was 440.7 mV when external resistance was 1,000 Ω. There were four phases (rapid fall phase, stationary phase, fall phase and stationary phase of low voltage) in the periodic time of MFC, and the output voltage range of 150–300 mV lasted for 107 hours during stationary phase. In addition, the obtained maximum power density was 220.7 mW m−2 and internal resistance was 368.13 Ω in the MFC. Consequently, surplus sludge could be used to generate electricity in MFC, which could provide a novel process for sludge recycling.

scholarly journals Biotreatment of Actual Potato Chips Processing Wastewater with Electricity Generation in Microbial Fuel Cell

2018 ◽  
Vol 24 (12) ◽  
pp. 26-34
Author(s):  
Ahmed Yasir Radeef ◽  
Zainab Ziad Ismail
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electricity Generation ◽  
Suspended Solids ◽  
Potato Chips ◽  
Anaerobic Sludge ◽  
External Resistance ◽  
Power Densities

This study aimed to investigate the feasibility of treatment actual potato chips processing wastewater in a continuously operated dual chambers microbial fuel cell (MFC) inoculated with anaerobic sludge. The results demonstrated significant removal of COD and suspended solids of more than 99% associated with relatively high generation of current and power densities of 612.5 mW/m3 and 1750 mA/m3, respectively at 100 Ω external resistance.  

Feasible design for electricity generation from Chlorella vulgaris using convenient photosynthetic conditions

BIOCELL ◽  
2018 ◽  
Vol 42 (1) ◽  
pp. 7-11 ◽  
Author(s):  
M. Moustafa ◽  
T. Taha ◽  
M. Elnouby ◽  
M.A. Abu-Saied Aied ◽  
A. Shati ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Electricity Generation

A Review on Utilization of Fly- Ash and Pond-Ash as a Partial Replacement of Cement in Concrete Mix Design

2018 ◽  
pp. 413-418
Author(s):  
Harshkumar Patel ◽  
Yogesh Patel
Keyword(s):  
Fly Ash ◽  
Electricity Generation ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Strength Test ◽  
Partial Replacement ◽  
Pond Ash ◽  
Research Activities ◽  
Ash Disposal

Now-a-days energy planners are aiming to increase the use of renewable energy sources and nuclear to meet the electricity generation. But till now coal-based power plants are the major source of electricity generation. Disadvantages of coal-based thermal power plants is disposal problem of fly ash and pond ash. It was earlier considered as a total waste and environmental hazard thus its use was limited, but now its useful properties have been known as raw material for various application in construction field. Fly ash from the thermal plants is available in large quantities in fine and coarse form. Fine fly ash is used in construction industry in some amount and coarse fly ash is subsequently disposed over land in slurry forms. In India around 180 MT fly is produced and only around 45% of that is being utilized in different sectors. Balance fly ash is being disposed over land. It needs one acre of land for ash disposal to produce 1MW electricity from coal. Fly ash and pond ash utilization helps to reduce the consumption of natural resources. The fly ash became available in coal based thermal power station in the year 1930 in USA. For its gainful utilization, scientist started research activities and in the year 1937, R.E. Davis and his associates at university of California published research details on use of fly ash in cement concrete. This research had laid foundation for its specification, testing & usages. This study reports the potential use of pond-ash and fly-ash as cement in concrete mixes. In this present study of concrete produced using fly ash, pond ash and OPC 53 grade will be carried. An attempt will be made to investigate characteristics of OPC concrete with combined fly ash and pond ash mixed concrete for Compressive Strength test, Split Tensile Strength test, Flexural Strength test and Durability tests. This paper deals with the review of literature for fly-ash and pond-ash as partial replacement of cement in concrete.

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