Microbial fuel cell stack power to lithium battery stack: Pilot concept for scale up

2018 ◽  
Vol 230 ◽  
pp. 1633-1644 ◽  
Author(s):  
Fabian Fischer ◽  
Marc Sugnaux ◽  
Cyrille Savy ◽  
Gérald Hugenin
Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 217 ◽  
Author(s):  
Rodrigo Valladares Linares ◽  
Jorge Domínguez-Maldonado ◽  
Ernesto Rodríguez-Leal ◽  
Gabriel Patrón ◽  
Alfonso Castillo-Hernández ◽  
...  

The most important operational expense during wastewater treatment is electricity for pumping and aeration. Therefore, this work evaluated operational parameters and contaminant removal efficiency of a microbial fuel cell stack system (MFCSS) that uses no electricity. This system consists of (i) septic tank primary treatment, (ii) chamber for secondary treatment containing 18 MFCs, coupled to an energy-harvesting circuit (EHC) that stores the electrons produced by anaerobic respiration, and (iii) gravity-driven disinfection (sodium hypochlorite 5%). The MFCSS operated during 60 days (after stabilization period) and it was gravity-fed with real domestic wastewater from a house (5 inhabitants). The flow rate was 600 ± 100 L∙d−1. The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorous were measured in effluent, with values of 100 ± 10; 12 ± 2; 9.6 ± 0.5 and 4 ± 0.2 mg∙L−1, and removal values of 86%, 87%, 84% and 64%, respectively. Likewise, an EHC (ultra-low energy consumption) was built with 6.3 V UCC® 4700 µF capacitors that harvested and stored energy from MFCs in parallel. Energy management was programmed on a microcontroller Atmega 328PB®. The water quality of the treated effluent complied with the maximum levels set by the Mexican Official Standard NOM-001-SEMARNAT-1996-C. A cost analysis showed that MFCSS could be competitive as a sustainable and energy-efficient technology for real domestic wastewater treatment.


2019 ◽  
Vol 412 ◽  
pp. 416-424 ◽  
Author(s):  
Carlo Santoro ◽  
Mounika Kodali ◽  
Najeeb Shamoon ◽  
Alexey Serov ◽  
Francesca Soavi ◽  
...  

2016 ◽  
Vol 42 (11) ◽  
pp. 7689-7700
Author(s):  
Dingding Ye ◽  
Bowen Deng ◽  
Jun Li ◽  
Wentian Zou ◽  
Chuan Ke ◽  
...  

2019 ◽  
Vol 164 ◽  
pp. 114955 ◽  
Author(s):  
Zhigang Yang ◽  
Lijie Zhang ◽  
Changliang Nie ◽  
Qingjie Hou ◽  
Shasha Zhang ◽  
...  

2013 ◽  
Vol 67 (11) ◽  
pp. 2568-2575 ◽  
Author(s):  
I. S. Michie ◽  
J. R. Kim ◽  
R. M. Dinsdale ◽  
A. J. Guwy ◽  
G. C. Premier

For the successful scale-up of microbial fuel cell (MFC) systems, enrichment strategies are required that not only maximise reactor performance but also allow anodic biofilms to be robust to environmental change. Cluster analysis of Denaturing Gradient Gel Electrophoresis community fingerprints showed that anodic biofilms were enriched according to substrate type and temperature. Acetate produced the highest power density of 7.2 W m−3 and butyrate the lowest at 0.29 W m−3, but it was also found that the trophic conditions used to acclimate the electrogenic biofilms also determined the MFC response to different substrate types, with both acetate and butyrate substrates recording power densities of 1.07 and 1.0 W m−3 respectively in a sucrose enriched reactor. When temperature perturbations were introduced to investigate the stability of the different substrate acclimated electrogenic biofilms, the 20 °C acclimated acetate reactor was unaffected by 10 °C operation but all reactors acclimated at 35 °C were adversely affected. When the operating temperature was raised back to 35 °C both the acetate and butyrate reactors recovered electrogenic activity but the sucrose reactor did not. It is thought that this was due to the more complex syntropic interactions that are required to occur when metabolising more complex substrate types.


2022 ◽  
Vol 520 ◽  
pp. 230875
Author(s):  
Xavier Alexis Walter ◽  
Elena Madrid ◽  
Iwona Gajda ◽  
John Greenman ◽  
Ioannis Ieropoulos

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2756
Author(s):  
Liliana Alzate-Gaviria ◽  
Raul Tapia-Tussell ◽  
Jorge Domínguez-Maldonado ◽  
Rubi Chable-Villacis ◽  
Gabriela Rosiles González ◽  
...  

Bioelectrochemical technologies offer alternative ways of treating wastewater and using this process to generate electricity. However, research in this area is just beginning to consider environmental transmission of viruses present in wastewater. The viral fecal indicator coliphage MS2 (the most frequently used pathogen model) was used in this study, since it is a well-known indigenous wastewater virus. The scaled-up bioelectrochemical system had a working volume of 167 L and coliphage MS2 concentration decreased from 8000 to 285 PFU/mL. The kinetics were quantified up to 15 h, after which excessive yeast growth in the system prevented further bacteriophage determination. The logarithmic reduction value (LRV) calculated within the first three hours was 3.8. From 4 hours to 14, LRV values were from 4.1 to 4.8, and in hour 15 the LRV increased to 5.3, yielding a more than 90% reduction. Overall, results obtained indicate that the scaled-up bioelectrochemical treatment system was efficient in reducing coliphage MS2 densities and could be used as a model to explore its further applicability for the reduction of viruses or pathogens in treated effluents.


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