10 documents found, page 1 of 1
Bioeconomy in textile industry: industrial residues valorization toward textile...
Fernandes, Ana M.; Pinheiro, Ana Isabel; Rodrigues, Catarina; Silva, Carla J.Industrial residues are sources of functional biopolymers with interesting properties for textile applications. This study aims to evaluate the impact of enzymatic pre-treatment on oil yield and phenolic compounds content in an aqueous extraction process, as well as the functional properties incorporated into textiles. This research investigated the influence of residue granulometry, biomass percentage, and the...
Effect of ohmic heating pretreatment on enzyme production by solid-state fermen...
Silva, Bruna Filipa Ferreira; Machado, Luís Pedro Lima; Fernandes, Ana M.; Pereira, Ricardo Nuno Correia; Belo, IsabelSolid-state fermentation (SSF) involves the growth of microorganisms on solid substrates, mimicking natural environments of many species. Due to sustainability concerns, transforming agro-industrial by-products into value-added products through SSF has been increasingly studied. Brewers spent grain (BSG), the main by-product of beer production, mostly consists of barley grain husks, making BSG a great support f...
Sustainable fish meal-free diets for gilthead sea bream (Sparus aurata): integr...
Fernandes, Ana M.; Calduch-Giner, Josep Àlvar; Pereira, Gabriella V.; Fachadas Gato Coelho Gonçalves, Ana Teresa; Dias, Jorge; Johansen, JohanThe growth of the aquaculture industry requires more sustainable and circular economy-driven aquafeed formulas. Thus, the goal of the present study was to assess in farmed gilthead sea bream (Sparus aurata L.) how different combinations of novel and conventional fish feed ingredients supported proper animal performance in terms of growth and physiological biomarkers of blood/liver/head kidney. A 77-day feeding ...
Sequencing batch airlift reactors (SBAR): a suitable technology for treatment a...
Silva, Ana Rita; Fernandes, Ana M.; Fiume, Francesca; Carvalho, Ana Rita Castro; Machado, Raul; Pereira, M. A.Produced water (PW) and spent oil-based wastewaters are some of the largest mineral oil wastewaters produced. Due to the high toxicity of hydrocarbons, several countries set stringent discharge limits and its treatment is compulsory before discharge. In this work, biological treatment of mineral oil wastewaters coupled with the production of bacterial lipids is demonstrated in sequential batch airlift reactors ...
New vascular graft using the decellularized human chorion membrane
Frazão, Laura. P.; Fernandes, Ana M.; Oliveira, Catarina; Martins, Albino; Silva, Tiago H.; Vieira de Castro, Joana; Nogueira-Silva, CristinaThe increase of both arterial occlusive diseases and coronary heart diseases leads to a higher demand for small diameter vascular grafts (<6 mm). The gold standard for small-diameter vessel replacement is the use of autologous veins. Nevertheless, up to 30% of these patients need to use vascular grafts. Although synthetic polymers have been successfully used for the replacement of large-diameter vascular grafts...
Ion speciation: a key for the understanding of the solution properties of ionic...
Kurnia, Kiki A.; Fernandes, Ana M.; Pinho, Simão; Coutinho, João A.P.Recently, combinations of two (or more) ionic liquids, known as ionic liquid mixtures, have become popular and have a broad range of applications. However, the fundamental knowledge on the molecular interactions that exist in ionic liquid mixtures is far from being understood. In this work, the experimental measurement of the water activity coefficient and computational modelling using Conductor-like Screening ...
Inclusion Complexes of Ionic Liquids and Cyclodextrins: Are They Formed in the ...
Fernandes, Ana M.; Schroeder, Bernd; Barata, Tania; Freire, Mara G.; Coutinho, Joao A. P.The interaction of imidazolium-based ionic liquids with alpha- and beta-cyclodextrins was investigated by electrospray ionization mass spectrometry with variable collision induced dissociation energy and quantum chemical gas-phase calculations. The center-of-mass energy at which 50 % of a precursor ion decomposes (E-cm,E-1/2) was determined for the isolated [cyclodextrin + cation](+) or [cyclodextrin + anion](-...
Complete removal of textile dyes from aqueous media using ionic-liquid-based aq...
Ferreira, Ana M.; Coutinho, Joao A. P.; Fernandes, Ana M.; Freire, Mara G.The textiles manufacturing is one of the core industries which discharges a heavy load of chemicals during the dying process. As a result, the release of large contents of dyes through aqueous effluents leads to both environmental and economic concerns. Aiming at developing more benign methodologies than those studied hitherto, this work proposes a novel approach to remove dyes from aqueous discharges by the us...
Cation Alkyl Side Chain Length and Symmetry Effects on the Surface Tension of I...
Almeida, Hugo F. D.; Freire, Mara G.; Fernandes, Ana M.; Lopes-da-Silva, Jose A.; Morgado, Pedro; Shimizu, Karina; Filipe, Eduardo J. M.Aiming at providing a comprehensive study of the influence of the cation symmetry and alkyl side chain length on the surface tension and surface organization of ionic liquids (ILs), this work addresses the experimental measurements of the surface tension of two extended series of ILs, namely R,R'-dialkylimidazolium bis-Rtrifluoromethyl)sulfonyllimide ([C(n)C(n)im][NTf2]) and R-alkyl-3-methylimidazolium bis[ (tr...
Solubility of non-aromatic ionic liquids in water and correlation using a QSPR ...
Freire, Mara G.; Neves, Catarina M. S. S.; Ventura, Sónia P. M.; Pratas, Maria J.; Marrucho, Isabel M.; Oliveira, João; Coutinho, João A. P.The solubility of ionic liquids (ILs) in water is of significant relevance for both process design and evaluation of their environmental impact. In this work, the solubilities of the non-aromatic piperidinium- and pyrrolidinium-based ILs in water, combined with the anion bis(trifluoromethylsulfonyl)imide, were determined in the temperature range from (288.15 to 318.15) K. Electrospray ionization mass spectromet...