title: Optimization performance of an AnSBBR applied to biohydrogen production treating whey.
abstract: The present study investigated the influence of the influent concentration of substrate, feeding time and temperature on the production of biohydrogen from cheese whey in an AnSBBR with liquid phase recirculation. The highest hydrogen yield (0.80 molH2.molLactose(-1)) and productivity (660 mLH2 L(-1) d(-1)) were achieved for influent concentrations of 5400 mgDQO L(-1). No significant difference was noted in the biological hydrogen production for the feeding time conditions analyzed. The lowest temperature tested (15 °C) promoted the highest hydrogen yield and productivity (1.12 molH2 molLactose(-1) and 1080 mLH2 L(-1) d(-1)), and for the highest temperature (45 °C), hydrogen production did not occur. The indicator values for the hydrogen production obtained with this configuration were higher than those obtained in other studies using traditional configurations such as UASBr and CSTR. A phylogenetic analysis showed that the majority of the analyzed clones were similar to Clostridium. In addition, clones phylogenetically similar to the Lactobacilaceae family, notably Lactobacillus rhamnosus, and clones with similar sequences to Acetobacter indonesiensis were observed in small proportion in the reactor.
authors.affiliation: Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil.
authors.forename: D M F
authors.initials: DM
authors.lastname: Lima
authors.affiliation: Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil.
authors.forename: C Z
authors.initials: CZ
authors.lastname: Lazaro
authors.affiliation: Escola de Engenharia Mauá (EEM), Instituto Mauá de Tecnologia (IMT), Praça Mauá 1, CEP 09.580-900, São Caetano do Sul, SP, Brazil. Electronic address: rodrigues@maua.br.
authors.forename: J A D
authors.initials: JA
authors.lastname: Rodrigues
authors.affiliation: Escola de Engenharia Mauá (EEM), Instituto Mauá de Tecnologia (IMT), Praça Mauá 1, CEP 09.580-900, São Caetano do Sul, SP, Brazil.
authors.forename: S M
authors.initials: SM
authors.lastname: Ratusznei
authors.affiliation: Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil.
authors.forename: M
authors.initials: M
authors.lastname: Zaiat
mesh_terms: D056804:Biofuels; D019149:Bioreactors / Q000382:microbiology*; D002611:Cheese; D006859:Hydrogen / Q000737:chemistry*; D010802:Phylogeny; D013696:Temperature; D000067796:Whey / Q000737:chemistry*
chemical_list: D056804:Biofuels; D006859:Hydrogen
keywords: AnSBBR; Biohydrogen; Cheese whey; Clostridium; Feeding time; Influent concentration; Phylogenetic characterization; Temperature