Effects of architectural changes and inoculum type on internal resistance of a microbial fuel cell designed for the treatment of leachates from the dark hydrogenogenic fermentation of organic solid wastes

Rapid growth of population in Kathmandu valley has increased solid wastes generation tremendously. One of the best ways of managing the organic wastes is to recycle domestic wastes at the site of its origin by vermicomposting into valuable organic fertilizers. A laboratory experiment was carried out at for proper management of solid wastes of Kathmandu valley, generated from Ayurveda industry, sugar mill (bagasse), wood mill, kitchen, and vegetable and fruit markets. The experiment dealt with the decomposition of solid wastes through the action of red worm (Eisenia foetida). The vermicomposting of mixtures were carried out for 12 weeks. Observations showed that vermicompost obtained from Ayurveda industry wastes was found to be rich in N, P, K and organic matter, and vermicompost from sugarcane bagasse was found best for rapid multiplication of Eisenia foetida. Fish scales and sawdust were identified as worst substrate for this worm. Key words: vermi compost; organic solid wastes; Eisenia foetida DOI: 10.3126/njst.v9i0.3172 Nepal Journal of Science and Technology 9 (2008) 99-104

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Reactive Extraction of Short-Chain Fatty Acids from Synthetic Acidic Fermentation Broth of Organic Solid Wastes and Their Stripping

Journal of Chemical & Engineering Data ◽

10.1021/je2006456 ◽

2011 ◽

Vol 57 (1) ◽

pp. 46-51 ◽

Cited By ~ 12

Author(s):

Yue-Ping Ren ◽

Jian-Jun Wang ◽

Xiu-Fen Li ◽

Xin-Hua Wang

Keyword(s):

Fatty Acids ◽

Fermentation Broth ◽

Short Chain Fatty Acids ◽

Solid Wastes ◽

Reactive Extraction ◽

Short Chain ◽

Organic Solid ◽

Organic Solid Wastes ◽

Chain Fatty Acids

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Study of the Effect of Activated Carbon Cathode Configuration on the Performance of a Membrane-Less Microbial Fuel Cell

Catalysts ◽

10.3390/catal10060619 ◽

2020 ◽

Vol 10 (6) ◽

pp. 619

Author(s):

M. L. Jiménez González ◽

Carlos Hernández Benítez ◽

Zabdiel Abisai Juarez ◽

Evelyn Zamudio Pérez ◽

Víctor Ángel Ramírez Coutiño ◽

...

Keyword(s):

Activated Carbon ◽

Fuel Cell ◽

Microbial Fuel Cell ◽

Removal Efficiency ◽

Internal Resistance ◽

Cod Removal ◽

The Other ◽

Cod Removal Efficiency ◽

Water Recirculation ◽

Better Than

In this paper, the effect of cathode configuration on the performance of a membrane-less microbial fuel cell (MFC) was evaluated using three different arrangements: an activated carbon bed exposed to air (MFCE), a wetland immersed in an activated carbon bed (MFCW) and a cathode connected to an aeration tower featuring a water recirculation device (MFCT). To evaluate the MFC performance, the efficiency of the organic matter removal, the generated voltage, the power density and the internal resistance of the systems were properly assessed. The experimental results showed that while the COD removal efficiency was in all cases over 60% (after 40 days), the MFCT arrangement showed the best performance since the average removal value was 82%, compared to close to 70% for MFCE and MFCW. Statistical analysis of the COD removal efficiency confirmed that the performance of MCFT is substantially better than that of MFCE and MFCW. In regard to the other parameters surveyed, no significant influence of the different cathode arrangements explored could be found.

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9,10-ANTHRAQUINONE-2,6-DISULFONIC ACID DISODIUM SALT/ EPOXY GRAPHITE COMPOSITE FOR ANODE IN MICROBIAL FUEL CELL

Jurnal Teknologi ◽

10.11113/jt.v79.11334 ◽

2017 ◽

Vol 79 (5-3) ◽

Author(s):

Mimi Hani Abu Bakar ◽

Neil F Pasco ◽

Ravi Gooneratne ◽

Kim Byung Hong

Keyword(s):

Fuel Cell ◽

Microbial Fuel Cell ◽

Conductive Filler ◽

Internal Resistance ◽

Disodium Salt ◽

Disulfonic Acid ◽

Graphite Composite ◽

Design Flexibility ◽

Matrix Surface ◽

The Matrix

Properties such as electrical conductivity, low resistivity, chemicals and corrosion resistance are mostly found in carbon based materials. Epoxy resin is excellent for electrical insulation and can be used as a conductor with the addition of conductive filler. Combinations of carbon and epoxy show qualities of a conductive electrode, mechanically strong with design flexibility and thus makes them suitable as electrodes in microbial fuel cell (MFC). In this study, graphite-epoxy composites were fabricated with multi-walled carbon nanotube (MWCNT) embedded in the matrix surface. 9,10-Anthraquinone-2,6-disulfonic acid disodium salt/polypyrrole (PPy/AQDS) was used as mediator, covalently electrografted on electrode’s surface. Electrochemical stability of anodes during continuous operation were measured in air-cathode MFCs. It appears that maximum power in MFC could be increased up to 42% with surface modification using PPy/AQDS. Internal resistance (Rint) could be reduced up to 66% with the inclusion of MWCNT. These findings show that a one-day fabrication of a-ready-to-use conductive electrode is possible for graphite content between 70-80% (w/w).

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