title: Prospective technology on bioethanol production from photofermentation.
abstract: The most important global demand is the energy supply from alternative source. Ethanol may be considered an environmental friendly fuel that has been produced by feedstock. The production of ethanol by microalgae represent a process with reduced environmental impact with efficient CO2 fixation and requiring less arable land. This work studied the production of ethanol from green alga Chlamydomonas reinhardtii through the cellular metabolism in a light/dark cycle at 25 °C in a TAP medium with sulfur depletion. The parameters evaluated were inoculum concentration and the medium supplementation with mixotrophic carbon sources. The combination of C.reinhardtii and Rhodobacter capsulatus through a hybrid or co-culture systems was also investigated as well. C.reinhardtii maintained in TAP-S produced 19.25±4.16 g/L (ethanol). In addition, in a hybrid system, with medium initially supplemented with milk whey permeated and the algal effluent used by R. capsulatus, the ethanol production achieved 19.94±2.67 g/L.
authors: School of Chemical Engineering, Federal University of Uberlandia. Av. Joao Naves de Avila 2121, Santa Monica 38408-144, Uberlandia, MG, Brazil.
authors: Rosangela Lucio
authors: RL
authors: Costa
authors: School of Chemical Engineering, Federal University of Uberlandia. Av. Joao Naves de Avila 2121, Santa Monica 38408-144, Uberlandia, MG, Brazil.
authors: Thamayne Valadares
authors: TV
authors: Oliveira
authors: School of Chemical Engineering, Federal University of Uberlandia. Av. Joao Naves de Avila 2121, Santa Monica 38408-144, Uberlandia, MG, Brazil.
authors: Juliana de Souza
authors: Jde S
authors: Ferreira
authors: School of Chemical Engineering, Federal University of Uberlandia. Av. Joao Naves de Avila 2121, Santa Monica 38408-144, Uberlandia, MG, Brazil.
authors: Vicelma Luiz
authors: VL
authors: Cardoso
authors: School of Chemical Engineering, Federal University of Uberlandia. Av. Joao Naves de Avila 2121, Santa Monica 38408-144, Uberlandia, MG, Brazil. Electronic address: frxbatista@feq.ufu.br.
authors: Fabiana Regina Xavier
authors: FR
authors: Batista
mesh_terms: D056804:Biofuels; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000494:pharmacology; D016825:Chlamydomonas reinhardtii / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects; D018920:Coculture Techniques; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects / Q000528:radiation effects*; D052836:Heterotrophic Processes / Q000187:drug effects / Q000528:radiation effects; D008027:Light; D010100:Oxygen / Q000378:metabolism; D016992:Rhodobacter / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects
chemical_list: D056804:Biofuels; D000431:Ethanol; D002244:Carbon; D010100:Oxygen
keywords: Chlamydomonas reinhardtii; Co-culture; Ethanol; Hybrid system; Rhodobacter capsulatus