Search results for "Air-cathode"

showing 2 items of 2 documents

The influence of sludge retention time on mixed culture microbial fuel cell start-ups

2017

Abstract In this work, the start-ups of air-cathode microbial fuel cells (MFCs) seeds with conventional activated sludge cultivated at different solid retention times (SRTs) are compared. A clear influence of the SRT of the inoculum was observed, corresponding to an SRT of 10 days to the higher current density exerted, about 0.2 A m −2 . This observation points out that, in this type of electrochemical device, it is recommended to use high SRT seeds. The work also points out that in order to promote an efficient start-up, it is not only necessary to use high SRT seeds, but also to feed a high COD concentration. When feeding 10,000 ppm COD and keeping SRT of 10 d differences of current densi…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciEnvironmental EngineeringMicrobial fuel cellMicrobial fuel cellAir-cathodeBiomedical EngineeringBioengineering02 engineering and technology010501 environmental sciencesSolid retention time Microbial fuel cell Air-cathode Acetate01 natural sciencesMixed culture0105 earth and related environmental sciencesSolid retention timChemistryAir cathodeAcetateEnvironmental engineeringSettore ING-IND/27 - Chimica Industriale E Tecnologica021001 nanoscience & nanotechnologyPulp and paper industryStart upSolid retention time Microbial fuel cell Air-cathode AcetateActivated sludge0210 nano-technologyRetention timehuman activitiesBiotechnology
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Optimization of the performance of an air–cathode MFC by changing solid retention time

2017

BACKGROUND This work is focused on the optimization of the performances of air-cathode microbial fuel cells (MFC) by changing the solid retention time (SRT) of the suspended biomass culture. RESULTS Five MFCs inoculated with activated sludge obtained from a municipal wastewater treatment plant were fed with a highly-concentrated acetate solution (10 000 ppm COD) and operated over two-month tests in order to determine how SRT may influence the performances of the bio-electrogenic cells. The MFC operated at SRTs of 2.5 days was found to outperform the other cells, operated at SRT of 1.4, 5.0, 7.4 and 10.0 days. In order to evaluate the possibility of using SRT as a manipulated parameter for t…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimicisolid retention time (SRT)acetate air-cathodeMicrobial fuel cellsSettore ING-IND/27 - Chimica Industriale E TecnologicaSludge agePilas de combustible microbianasmicrobial fuel cellSolid retention time (SRT)Acetate air-cathodeAcetato de aire-cátodoTiempo de retención de sólidos (SRT)human activitiessludge ageEdad del lodo
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