scholarly journals Effect of Combining Different Substrates and Inoculum Sources on Bioelectricity Generation and COD Removal in a Two-Chambered Microbial FuelCell: A Preliminary Investigation

2020 ◽  
Vol 24 (2) ◽  
pp. 67-78 ◽  
Author(s):  
Joshua Marks ◽  
Johan Kirkel ◽  
Patrick Sekoai ◽  
Christopher Enweremadu ◽  
Michael Daramola
Keyword(s):  
Fuel Cells ◽  
Cod Removal ◽  
Wastewater Sludge ◽  
Anaerobic Sludge ◽  
Organic Substrates ◽  
Brewery Wastewater ◽  
Inoculum Sources ◽  
Inoculum Source ◽  
Bioelectricity Generation ◽  
Potato Waste

AbstractIn recent years, fuel cells have become a renewable source of energy. Among different kinds of fuel cells, microbial fuel cells, which convert organic substrates to electricity by electrogenic bacteria have attracted most attention. In this study, which is preliminary in nature, potential of electricity generation and chemical oxygen demand (COD) removal were studied in a two-chamber microbial fuel cell (MFC) reactor. Effect of type of feedstock and inoculum source on bioelectricity generation and COD removal was studied as well. Brewery wastewater and potato waste were used as substrates while anaerobic sludge and cow dung were used as inoculum sources. The substrate and inoculum sources were in 8.2:1 ratio and a phosphate buffer was added to the anode compartment to regulate the pH. The system was operated at 30 °C and a home-made membrane served as a bridge between the electrodes. A maximum voltage of 3.6 mV was generated from the brewery wastewater sludge and the maximum COD removal after 3 days was 43.7 %. It was further found that the use of animal dung as inoculum source outperformed the use of sludge as regard the bioelectricity generation but not for COD removal. Similarly, the use of the brewery waste as an organic substrate outperformed the use of potato waste as regard the bioelectricity generation but not for COD removal. All experiments yielded a measurable voltage, however, the unsteady behaviour of the voltage output made it difficult to compare substrates in terms of their viability as organic fuel. Therefore, future studies should consider conducting substrate physico-chemical analysis and genomic analysis of the inoculum sources to understand their composition.

Effect of anaerobic sludge on the bioelectricity generation enhancement of bufferless single-chamber microbial fuel cells

2020 ◽  
Vol 131 ◽  
pp. 107387 ◽  
Author(s):  
Ying Lv ◽  
Yue Wang ◽  
Yueping Ren ◽  
Xiufen Li ◽  
Xinhua Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Anaerobic Sludge ◽  
Single Chamber ◽  
Bioelectricity Generation

Performance of a Pilot-Scale Hydrolysis Acidification and Improved UASB Process for the Treatment of Alcohol Wastewater: Sludge Granulation and Treatment Efficiency

2013 ◽  
Vol 726-731 ◽  
pp. 2246-2251
Author(s):  
Lu Ji Yu ◽  
Hui Ying Wang ◽  
Hong Jie Song ◽  
De Fang Kong ◽  
Tao Chen
Keyword(s):  
Removal Rate ◽  
Cod Removal ◽  
Wastewater Sludge ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Composition Analysis ◽  
Treatment Efficiency ◽  
High Concentration ◽  
Hydrolysis Acidification ◽  
Cod Removal Rate

A system termed hydrolysis acidification-improved upflow anaerobic sludge blanket (HA-IUASB) was developed for alcohol wastewater treatment. The improvements of the UASB were that: a reflux pipe was set below the three-phase separator, and the mud mixture treated by the granular sludge bed returned into the water inlet.The improved UASB starts up completely after 61 days operation and the COD removal rate is between 70~96% during startup stage. The mature granule size reachs 3 mm and the methanogenic bacteria inside are mainly bacillus and cocci through Scanning Electron Microscope (SEM) observation. The treatment efficiency of the improved UASB is high and COD removal rate is 55%~80%. COD removal rate reachs 70%~87% by HA-UASB system under the condition of high concentration alcohol wastewater. CH4 is the main constituent and the percentage is 81.61% according to the gas composition analysis. This study proves that HA-IUASB is a feasible and practical means to treat alcohol wastewater.

scholarly journals Hairy Nightshade as a Potential Potato leafroll virus (Luteoviridae: Polerovirus) Inoculum Source in Pacific Northwest Potato Ecosystems

2008 ◽  
Vol 98 (9) ◽  
pp. 985-991 ◽  
Author(s):  
R. Srinivasan ◽  
J. M. Alvarez
Keyword(s):  
Pacific Northwest ◽  
Green Peach Aphid ◽  
Potato Leafroll Virus ◽  
Inoculum Sources ◽  
Inoculum Source ◽  
Hairy Nightshade ◽  
Aphid Density ◽  
Temporal And Spatial ◽  
Green Peach Aphids ◽  
Leafroll Virus

Hairy nightshade, Solanum sarrachoides, is a solanaceous weed found abundantly in Pacific Northwest potato ecosystems. It serves as a reservoir for one of the important potato viruses, Potato leafroll virus (PLRV) (Luteoviridae: Polerovirus), and its most important vector, the green peach aphid, Myzus persicae (Homoptera: Aphididae). Laboratory research indicated an increased green peach aphid settling and performance on S. sarrachoides than on potato. It also revealed that green peach aphids transmitted PLRV more efficiently from S. sarrachoides to potato than from potato to potato. To test the efficiency of S. sarrachoides as an inoculum source in the field, a two season (2004 and 2005) trial was conducted at Kimberly, Idaho. Two inoculum sources, PLRV-infected potato and PLRV-infected S. sarrachoides, were compared in this trial. Green peach aphid density and temporal and spatial PLRV spread were monitored at weekly intervals. Higher densities of green peach aphids were observed on plots with S. sarrachoides and inoculum sources (PLRV-infected S. sarrachoides and potato) than on plots without S. sarrachoides and inoculum sources. PLRV infection in plots with PLRV-infected S. sarrachoides was similar to or slightly higher than in plots with PLRV-infected potato as an inoculum source. Temporal and spatial PLRV spread was similar in plots with either inoculum source. Thus, S. sarrachoides is as efficient as or a better PLRV inoculum source than potato.

Electrogenic and Antimethanogenic Properties of Bacillus cereus for Enhanced Power Generation in Anaerobic Sludge-Driven Microbial Fuel Cells

2017 ◽  
Vol 31 (6) ◽  
pp. 6132-6139 ◽  
Author(s):  
M. Amirul Islam ◽  
Baranitharan Ethiraj ◽  
Chin Kui Cheng ◽  
Abu Yousuf ◽  
Md. Maksudur Rahman Khan
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Bacillus Cereus ◽  
Microbial Fuel Cells ◽  
Anaerobic Sludge

Analysis of Reactions for Biodegradation of Volatile Acid Components in an Anaerobic Sludge Granular Bed Treating Beer Brewery Wastewater

2004 ◽  
Vol 37 (8) ◽  
pp. 1026-1034 ◽  
Author(s):  
Katsuhiko Muroyama ◽  
Toshiyuki Nakai ◽  
Yusuke Uehara ◽  
Yasunori Sumida ◽  
Akihiko Sumi
Keyword(s):  
Anaerobic Sludge ◽  
Volatile Acid ◽  
Granular Bed ◽  
Brewery Wastewater

Brewery wastewater treatment using air-cathode microbial fuel cells

2008 ◽  
Vol 78 (5) ◽  
pp. 873-880 ◽  
Author(s):  
Yujie Feng ◽  
Xin Wang ◽  
Bruce E. Logan ◽  
He Lee
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Brewery Wastewater ◽  
Air Cathode

scholarly journals Bioelectricity production from tofu wastewater using microbial fuel cells with microalgae Spirulina sp as catholyte

2020 ◽  
Vol 202 ◽  
pp. 08007
Author(s):  
Wahyu Zuli Pratiwi ◽  
Hadiyanto Hadiyanto ◽  
Purwanto Purwanto ◽  
Muthi’ah Nur Fadlilah
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Organic Waste ◽  
Oxygen Demand ◽  
Salt Bridge ◽  
Cod Removal ◽  
Biofuel Production ◽  
Pre Treatment ◽  
Made In

Microalgae-Microbial Fuel Cells (MMFCs) are very popular to be used to treat organic waste. MMFCs can function as an energy-producing wastewater pre-treatment system. Wastewater can provide an adequate supply of nutrients, support the large capacity of biofuel production, and can be integrated with existing wastewater treatment infrastructure. The reduced content of Chemical Oxygen Demand (COD) is one way to measure the efficiency of wastewater treatment. MMFCs reactors are made in the form of two chambers (anode and cathode) both of which are connected by a salt bridge. Tofu wastewater as an anode and Spirulina sp as a cathode. To improve MFCs performance which is to obtain maximum COD removal and electricity generation, nutrient NaHCO3 as the nutrient carbon source for Spirulina sp was varied. The system running phase on 12 days. The results were Spirulina sp treated with MFCs technology has better growth than non-MFCs. The MMFC generated a maximum power density of 21.728 mW/cm2 and achieved 57.37% COD removal. These results showed that the combined process was effective in treating tofu wastewater.

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