Now showing items 1-8 of 8

    • Evaluation of wavelength selection methods for 2D fluorescence spectra applied to bioprocess characterization 

      Masiero, Sara Scomazzon; Trierweiler, Jorge Otávio; Farenzena, Marcelo; Escobar, Matheus de Souza; Trierweiler, Luciane Ferreira; Ranzan, Cassiano (2013) [Journal article]
      In biotechnological processes, the productivity and costs depend strongly on the control of the operating conditions. For this reason, sensors that allow the monitoring of variables of interest become quite important. 2D ...
    • Growth of microalgae Scenedesmus sp in ethanol vinasse 

      Ramirez, Nelzy Neyza Vargas; Farenzena, Marcelo; Trierweiler, Jorge Otávio (2014) [Journal article]
      This study evaluated the feasibility of using vinasse as a nutrient source for microalgae cultivation. The Scenedesmus sp was grown in a medium supplemented with vinasse and process variables were optimized using a factorial ...
    • Influence of NaNO3 concentration and incident light intensity on Nannochloropsis oculata lipid accumulation 

      Gris, Lara Regina Soccol; Paim, Anderson de Campos; Farenzena, Marcelo; Trierweiler, Jorge Otávio (2013) [Journal article]
      This study aimed at evaluating the best conditions for lipid accumulation in the marine microalga Nannochloropsis oculata in an airlift photobioreactor. Experiments were carried out following a central composite design ...
    • K-rank : an evolution of y-rank for multiple solutions problem 

      Santos, Pedro Victor José de Lima; Ranzan, Lucas; Farenzena, Marcelo; Trierweiler, Jorge Otávio (2019) [Journal article]
      Y-rank can present faults when dealing with non-linear problems. A methodology is proposed to improve the selection of data in situations where y-rank is fragile. The proposed alternative, called k-rank, consists of splitting ...
    • Laboratory apparatus to evaluate microalgae production 

      Gris, Lara Regina Soccol; Paim, Anderson de Campos; Farenzena, Marcelo; Trierweiler, Jorge Otávio (2013) [Journal article]
      The application of microalgae for energy purposes and CO2 biomitigation continues to present a number of challenges, including the optimization of culture conditions. The application of experimental designs for microalgae ...
    • Plantwide periodical disturbances isolation and elimination in a petrochemical unit 

      Farenzena, Marcelo; Kayser, Cristine Alessandra; Trierweiler, Jorge Otávio (2015) [Journal article]
      Reducing process variability is crucial to reach a more profitable operating point. Periodical disturbances, however, impose barriers to achieve this goal. Their effect can be strong since one disturbance that appears in ...
    • StatSSCandlePlot : a new way of monitoring operational performance indicators 

      Giaquinto, Cláudia Daniela Melo; Trierweiler, Jorge Otávio; Teixeira, Herbert Campos Gonçalves; Trierweiler, Luciane Ferreira; Farenzena, Marcelo (2019) [Journal article]
      Operational KPIs play an extremely important role in the process industry, aiding in decision making. However, they need to be reliably calculated to be representative. The present work presents a schematic methodology for ...
    • Tanneries : from waste to sustainability 

      Farenzena, Marcelo; Trierweiler, Luciane Ferreira; Trierweiler, Jorge Otávio; Aquim, Patrice Monteiro de (2005) [Journal article]
      The aim of this work was to look for an efficient and environmentally safe solution for the leather tanning industry through a problem of non-linear programming. The results were promising and showed a significant potential ...