3 documents found, page 1 of 1
Comparative life cycle assessment of first- and second-generation ethanol from ...
Maga, Daniel; Thonemann, Nils; Hiebel, Markus; Sebastião, Diogo; Lopes, Tiago; Fonseca, César; Gírio, FranciscoABSTRACT: Purpose: The use of bagasse and trash from sugarcane fields in ethanol production is supposed to increase the ethanol yield per hectare, to reduce the energy demand, greenhouse gas emissions, and other environmental impacts. In this article, different technological options of ethanol production are investigated and quantified looking at potential environmental impacts. The first generation ethanol fro...
Life cycle assessment of advanced bioethanol production from pulp and paper sludge
Sebastião, Diogo; Gonçalves, Margarida S.; Marques, Susana; Fonseca, César; Gírio, Francisco; Oliveira, Ana Cristina; Matos, Cristina T.This work evaluates the environmental performance of using pulp and paper sludge as feedstock for the production of second generation ethanol. An ethanol plant for converting 5400 tons of dry sludge/year was modelled and evaluated using a cradle-to-gate life cycle assessment approach. The sludge is a burden for pulp and paper mills that is mainly disposed in landfilling. The studied system allows for the valori...
Effect of light on the production of bioelectricity and added-value microalgae ...
Gouveia, Luisa; Neves, Carole; Sebastião, Diogo; Nobre, B. P.; Matos, Cristina T.This study demonstrates the simultaneous production of bioelectricity and added-value pigments in a Photosynthetic Alga Microbial Fuel Cell (PAMFC). A PAMFC was operated using Chlorella vulgaris in the cathode compartment and a bacterial consortium in the anode. The system was studied at two different light intensities and the maximum power produced was 62.7 mW/m2 with a light intensity of 96 lE/(m2 s). The res...