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Bioelectrochemical energy storage in a Microbial Redox Flow Cell
Santos, Márcia S. S.; Peixoto, L.; Mushtaq, Kashif; Dias-Ferreira, Celia; Mendes, Adélio; Alves, M. M.Bioelectrochemical systems (BESs) can be used to transform the electrochemical energy of fuels in electricity in Microbial Fuel Cells (MFC). However, this generated bioenergy can be captured by external loads or dissipated as heat, instead of being utilized or stored. A Microbial Redox Flow Cell (MRFC) is here presented, which demonstrates the integration of a BESs with a Redox Flow Cell (RFC); it is an innovat...
Microbially-charged electrochemical fuel for energy storage in a redox flow cell
Santos, Márcia S. S.; Peixoto, L.; Azevedo, João; Monteiro, Ricardo A. R.; Dias-Ferreira, Celia; Alves, M. M.; Mendes, AdélioA Bioelectrochemical System (BES) is used for charging an electrochemical fuel to be used in a Redox Flow Cell (RFC), demonstrating the first proof of concept of a microbially-charged electrochemical fuel. Geobacter sulfurreducens, electroactive bacteria, was used to charge anthraquinone-2,6-disulfonate (2,6-AQDS) producing current densities of ca. 200500mAm2 and maximum power densities of ca. 33mWm2. The micro...
Dataset of socio-economic and waste collection indicators for Portugal at munic...
Oliveira, Verónica; Sousa, Vitor; Dias-Ferreira, CeliaThis data article presents demographic, socio-economic and waste-related data at municipal level for Portugal. The dataset includes raw data collected from 4 main sources: (i) the annual reports of waste management companies; (ii) the database of the Portuguese water, sanitation and waste regulatory entity; (iii) the Portuguese Environmental Agency; and (iv) national statistical data. Relevant indicators for wa...
Roads as sources of heavy metals in urban areas. The Covões catchment experimen...
Ferreira, António J. D.; Soares, Daniel; Serrano, Luis; Walsh, Rory P. D.; Dias-Ferreira, Celia; Ferreira, Carla S. S.Purpose This work studies the implications of different traffic patterns for heavy metal and solid pollution generation processes following rainfall events with contrasting antecedent meteorological conditions, at a periurban catchment. The aim is to provide information on the pollution processes and their potential environmental impacts for urban areas. Materials and methods Seven campaigns were performed cove...
The influence of electrodialytic remediation on dioxin (PCDD/PCDF) levels in fl...
Dias-Ferreira, Celia; Kirkelund, Gunvor M.; Jensen, Pernille E.Fly ash and Air Pollution Control (APC) residues collected from three municipal solid waste incinerators in Denmark and Greenland were treated by electrodialytic remediation at pilot scale for 8-10 h. This work presents for the first time the effect of electrodialytic treatment on polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF), and how these levels impact on the valorization o...
Heavy metal and PCB spatial distribution pattern in sediments within an urban c...
Dias-Ferreira, Celia; Pato, Rosinda L.; Varejao, Jorge B.; Tavares, Alexandre O.; Ferreira, Antonio J. D.This work analyzes polychlorinated biphenyl (PCB) and heavy metal contamination in fluvial sediments and soils in an urban catchment, according to the geo-accumulation index and to soil and sediment quality guidelines. The catchment is located in Coimbra, Portugal, being affected by frequent flooding, and its main stream is a tributary to one of the major rivers in Portugal (Mondego). Given the presence of indu...
Electrodialytic upgrading of three different municipal solid waste incineration...
Jensen, Pernille E.; Kirkelund, Gunvor M.; Pedersen, Kristine B.; Dias-Ferreira, Celia; Ottosen, Lisbeth M.Handling of air pollution control (APC) residues from municipal solid waste incineration (MSWI) is a challenge due to its toxicity and high leaching of toxic elements and salts. Electrodialysis (ED) of the material has shown potential for reduction of leaching of toxic elements and salts to produce a material feasible for substitution of cement in mortar. In this work results of 23 pilot-scale experiments (5-8 ...
Numerical prediction of diffusion and electric field-induced iron nanoparticle ...
Gomes, Helena I.; Rodríguez-Maroto, José Miguel; Ribeiro, Alexandra B.; Pamukcu, Sibel; Dias-Ferreira, CeliaZero valent iron nanoparticles (nZVI) are considered very promising for the remediation of contaminated soils and groundwaters. However, an important issue related to their limited mobility remains unsolved. Direct current can be used to enhance the nanoparticles transport, based on the same principles of electrokinetic remediation. In this work, a generalized physicochemical model was developed and solved nume...