12 documents found, page 1 of 2
Desafios e soluções na gestão de águas residuais têxteis: Uma abordagem biológica
Barbosa, Sónia G.; Nicolau, Ana; Silva, Ana R.; Salvador, Andreia Filipa Ferreira; Soares, Olívia S. G. P.; Pereira, Manuel Fernando R.; Gonçalves, AnaOs processos da indústria têxtil consomem grandes volumes de água e geram efluentes resistentes aos processos de tratamento convencionais. Uma gestão eficaz da água requer tecnologias de tratamento que enfrentem a complexidade e variabilidade dos efluentes, assegurando qualidade para reutilização em processos húmidos. Neste estudo testaram-se tratamentos biológicos anaeróbios e aeróbios, suplementados com 2 tip...
Epilactose as a promising butyrate-promoter prebiotic via microbiota modulation
Cardoso, Beatriz B.; Amorim, Cláudia Catarina Oliveira; Franco-Duarte, Ricardo; Alves, Joana I.; Barbosa, Sónia G.; Silvério, Sara Isabel CruzEpilactose is a disaccharide composed of galactose and mannose, and it is currently considered an under development prebiotic. In this study, we described the prebiotic potential of epilactose by in vitro fermentation using human fecal inocula from individuals following a Mediterranean diet (DM) or a Vegan diet (DV). The prebiotic effect of epilactose was also compared with lactulose and raffinose, and interest...
Microplastics biodegradation by estuarine and landfill microbiomes
Pires, Cristina S.; Costa, Luís; Barbosa, Sónia G.; Sequeira, João Carlos; Cachetas, Diogo Macedo; Freitas, José; Martins, Gilberto; Machado, Ana VeraPlastic pollution poses a worldwide environmental challenge, affecting wildlife and human health. Assessing the biodegradation capabilities of natural microbiomes in environments contaminated with microplastics is crucial for mitigating the effects of plastic pollution. In this work, we evaluated the potential of landfill leachate (LL) and estuarine sediments (ES) to biodegrade polyethylene (PE), polyethylene t...
CH4 production at moderate H2/CO2 pressures - insights on the specific hydrogen...
Barbosa, Sónia G.; Alves, Joana I.; Arantes, Ana Luísa; Lopes, Marlene; Alves, M. M.CO2 is one of the main contributors to greenhouse gases (GHGs), being its emission to the atmosphere one of the major driver of global climate change. Biological methanation of CO2 using renewable H2 provides a promising approach to use of superplus renewable electrical power to produce a gaseous fuel. CH4 is considered an important renewable energy carrier, that has a wide range of applications such as natural...
CH4 production at moderate H2/CO2 pressures insights on the use of anaerobic gr...
Barbosa, Sónia G.; Alves, Joana I.; Lopes, Marlene; Arantes, Ana Luísa; Alves, M. M.Introduction: The continuous increase in energy consumption and the intensive use of fossil fuels, lead to the emission of greenhouse gases (GHG) and, in particular, to an increase in the concentration of CO2 in the atmosphere. In this context, the improvement in global awareness and the demand for sustainable technologies and products strongly contribute to laid plans to combat climate change. CO2-to-CH4 conve...
Carbon nanomaterials for electrode modification in CH4-producing bioelectrochem...
Fernandes, B.; Barbosa, Sónia G.; Peixoto, L.; Ter Heijne, Annemiek; Pereira, M. A.Introduction: Unprecedented environmental phenomena have led to emerging and challenging plans to tackle global threats for the humanity namely intensive use of fossil resources and global warming. CO2 emission to the atmosphere is one of the major driver of global climate change. In this context, the development of alternative technologies for carbon capture and utilization has attracting more and more attenti...
Anaerobic granular sludge as biocatalyst for CH4 production at moderate H2/CO2 ...
Barbosa, Sónia G.; Alves, Joana I.; Lopes, Marlene; Arantes, Ana Luísa; Alves, Maria MadalenaUnprecedented environmental concerns related to the intensive use of fossil fuels has led to the use of alternative energy carriers for the production of biofuels/biochemicals. In this context, the development of alternative technologies for carbon capture and utilization has attracting more and more attention. Gas fermentation is a promising strategy for the production of bioproducts through the conversion of ...
Bioelectrochemical systems (BESs) towards conversion of carbon monoxide/syngas:...
Barbosa, Sónia G.; Peixoto, L.; Alves, J. I.; Alves, M. M.Microbial conversion of carbon monoxide (CO)/syngas has been extensively investigated. The microbial conversion of CO/syngas offers numerous advantages over chemically catalyzed processes e.g. the specificity of the biocatalysts, the operation at ambient conditions and high conversion efficiencies. Bioelectrochemical systems (BESs) exploit the capacity of electrochemically active bacteria (EAB) to use insoluble...
Anaerobic biological fermentation of urine as a strategy to enhance the perform...
Barbosa, Sónia G.; Rodrigues, T.; Peixoto, L.; Kuntke, Philipp; Alves, M. M.; Pereira, M. A.; Heijne, Annemiek TerThis study investigated the effect of pre-fermented urine on anode performance of a two-chambered microbial electrolysis cells (MECs) compared to raw urine. Pre-fermentation of urine was performed by anaerobic digestion. The effect of this pre-fermentation on anode performance of a MEC was assessed by measuring the removal of chemical oxygen demand (COD), current density and Coulombic efficiency (CE). The MEC u...
(Bio)electrochemical ammonia recovery: progress and perspectives
Kuntke, P.; Sleutels, T. H. J. A.; Rodríguez Arredondo, M.; Georg, S.; Barbosa, Sónia G.; Ter Heijne, A.; Hamelers, H. V. M.; Buisman, CeesIn recent years, (bio)electrochemical systems (B)ES have emerged as an energy efficient alternative for the recovery of TAN (total ammonia nitrogen, including ammonia and ammonium) from wastewater. In these systems, TAN is removed or concentrated from the wastewater under the influence of an electrical current and transported to the cathode. Subsequently, it can be removed or recovered through stripping, chemis...