Examinando por Materia "DISEÑO DE EXPERIMENTOS"

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    PublicaciónAcceso abierto
    Evaluación de un clarificador de manto de lodos a escala de laboratorio
    (2013-11-20) Wills, B. A. (Beatriz Amparo); Castro-Jiménez, C. C. (Camilo César); Correa, M. A. (Mauricio Andrés)
    In this paper, we report the results for the operation and performance of a laboratory-scale clarifier sludge blanket suspension hydraulic, through a series of experiments that used a 23 factorial design. Factors in the design included: turbidity of raw water, hydraulic load rate and type of coagulant. These factors could affect the formation of a blanket, and therefore, the system’s efficiency on the removing turbidity. Two types of coagulants –aluminum sulfate and C-325 (a cationic polymer)– were tested in two types of synthetic raw water prepared in the laboratory through the addition of kaolin with high (Type I with 100 NTU) and low (Type II with 15 NTU) turbidity. The system was operated with surface load rates of 30 and 70 m3/m2.day. Results show that the best blanket was generated when the system was operated with Type I water and a hydraulic load rate of 70 m3/ m2.day, with turbidity values in the effluent below 2 NTU.
  • Miniatura
    PublicaciónAcceso abierto
    Síntesis y caracterización de un polímero biodegradable a partir del almidón de yuca
    (2014-05-08) Meneses, J. (Juliana); Corrales, C. M. (Catalina María); Valencia-García, M. F. (Marco Fidel)
    In the present research a biodegradable polymer was elaborated from manioc starch, based on the Taguchi methodology as the experiment design tool. The sweet manioc starch was mixed with chemical reagents acting as plastifiers, extensors, thickeners, lubricants, moisturizers, and mold releasing agents, varying the experimental conditions as indicated by the experiment design. The different mixtures underwent several processes common to conventional polymers in an open mill, an injection machine, and a vulcanizing press. The experimental process gave as a result six polymeric samples of adequate characteristics, all of which were subjected to physical, chemical, and mechanical properties and biodegradation measurement.