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A First Process-Oriented Characterization of Eriolobus trilobatus (Labill. ex P...

Șen, Umut; Yücedağ, Cengiz; Balcı, Büşra; Arıcı, Şefik; Koçar, Günnur; Şat, Beyza; Viegas, Catarina; Gonçalves, Margarida; Miranda, Isabel

For the first time, Eriolobus trilobatus bark from Turkey has been characterized in terms of its chemical, extractive, fuel, and ash characteristics using SEM–EDS, wet chemical analysis, phenolic analysis, FT-IR, TGA, XRF, XRD, BET surface area measurement, proximate analysis, and ash fusion temperature (AFT) determination. The results showed that the bark contains 13% ash, dominated by calcium oxalate, and 15%...


Anfiteatro de Ammaia (Lusitania): nuevo ejemplo de modelo provincial

Fabião, Carlos; Nogales, Trinidad; Barrero, Nova; Guerra, Amílcar; Carvalho, Joaquim; Murciano, José María; Sabio, Rafael; Viegas, Catarina

The Roman Amphitheater of Ammaia (Hispania-Lusitania) is a new archaeological discovery, an example of a Roman provincial model in the public buildings of spectacles. In this article we analyse different aspects: its discovery, constructive elements and building characteristics, as well as its chronology, use and abandonment. Its model can be included in the provincial examples of Lusitania, where five amphithe...


Standardization of lusitatian amophorae: between convergence and diversity

Viegas, Catarina; Fabião, Carlos; Almeida, Rui Roberto de


Como entender o cinema português? O diálogo entre a cinematografia de Luís Isma...

Rebocho, João; Viegas, Catarina

The conceptual multiplicity found in the historiography of Portuguese cinema is, above all, inseparable from the mentalities and the time in which each work is situated. The Social and Human Sciences have, in recent decades, promoted several incursions into Portuguese Cinema and successfully leaning on the theoreticalpractical component. However, knowing how difficult it is to fill cinemas that display Portugue...

Data: 2021   |   Origem: Gaudium Sciendi

Evaluation of microalgae as bioremediation agent for poultry effluent and biost...

Viegas, Catarina; Gouveia, Luisa; Gonçalves, Maria Margarida

ABSTRACT: This work addresses how a pre-treatment involving biomass ash influences the poultry effluent's bioremediation using three microalga strains, such as Chlorella vulgaris, Chlorella protothecoides and Tetradesmus obliquus. The undiluted effluent served as the culture medium for the growth, both in batch and semi continuous modes, and the remediation efficiency and biomass production yield were quantifie...

Data: 2021   |   Origem: Repositório do LNEG

A circular approach for landfill leachate treatment: Chemical precipitation wit...

Viegas, Catarina; Nobre, Catarina; Mota, André Manuel Oliveira; Vilarinho, Cândida; Gouveia, Luisa; Gonçalves, Margarida

The aim of this work was to study an integrated approach for landfill leachate remediation comprising chemical precipitation with biomass bottom ash as a pre-treatment to reduce color and turbidity followed by bioremediation through microalgae treatment for effluent disposal. Optimal pre-treatment conditions were determined through batch experiments and were found to be 160 g L 1 ash dose, 96 h of contact time,...


Optimization of Biochar Production by Co-Torrefaction of Microalgae and Lignoce...

Viegas, Catarina; Nobre, Catarina; Correia, Ricardo; Gouveia, Luisa; Gonçalves, Maria Margarida

ABSTRACT: Co-torrefaction of microalgae and lignocellulosic biomass was evaluated as a method to process microalgae sludge produced from various effluents and to obtain biochars with suitable properties for energy or material valorization. The influence of four independent variables on biochar yield and properties was evaluated by a set of experiments defined by response surface methodology (RSM). The biochars ...

Data: 2021   |   Origem: Repositório do LNEG

A circular approach for landfill leachate treatment: chemical precipitation wit...

Viegas, Catarina; Nobre, Catarina; Mota, André; Vilarinho, Cândida; Gouveia, Luisa; Gonçalves, Maria Margarida

ABSTRACT: The aim of this work was to study an integrated approach for landfill leachate remediation comprising chemical precipitation with biomass bottom ash as a pre-treatment to reduce color and turbidity followed by bioremediation through microalgae treatment for effluent disposal. Optimal pre-treatment conditions were determined through batch experiments and were found to be 160 g L-1 ash dose, 96 h of con...

Data: 2021   |   Origem: Repositório do LNEG

Evaluation of microalgae as bioremediation agent for poultry effluent and biost...

Viegas, Catarina; Gouveia, Luisa; Gonçalves, Maria Margarida

ABSTRACT: This work addresses how a pre-treatment involving biomass ash influences the poultry effluent's bioremediation using three microalga strains, such as Chlorella vulgaris, Chlorella protothecoides and Tetradesmus obliquus. The undiluted effluent served as the culture medium for the growth, both in batch and semi continuous modes, and the remediation efficiency and biomass production yield were quantifie...

Data: 2021   |   Origem: Repositório do LNEG

Aquaculture wastewater treatment through microalgal: biomass potential applicat...

Viegas, Catarina; Gouveia, Luisa; Gonçalves, Maria Margarida

ABSTRACT: The use of microalgae to remediate raw effluent from brown crab aquaculture was evaluated by performing batch mode growth tests using separately the microalgae Chlorella vulgaris (Cv), Scenedesmus obliquus (Sc), Isochrysis galbana (Ig), Nannocloropsis salina (Ns), and Spirulina major (Sp). Removal efficiencies in batch growth were 100% for total nitrogen and total phosphorus for all microalgae. Chemic...

Data: 2021   |   Origem: Repositório do LNEG

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