Examinando por Autor "Greco, Carlos A."

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  • Artículo
    Acceso Abierto
    Dechroming of shavings
    (1994) Greco, Carlos A.; Bereciartúa, Pablo; Cantera, Carlos S.; De Giusti, Marisa Raquel
    In this report a study about experimental condition in a dechroming shavings hydrolytic process al moderate temperature involving an alkaline hydrolysis with calcium and sodium hydroxide with and without the presence of a proteolytic enzyme is described. The percentage of solubilization ol shavings is followed by total solid determination in protein hydrolysates; durability properties and aspect of hydrolysates is evaluated. A pilot plant trial was carried out using the developed procedure, in which a proteins mass balance through total nitrogen contents was perlormed. A statistical design based on a completed factorial experiment with four factors at two levels was employed and a reduced polynomial model from the experimental results was obtained.
  • Artículo
    Acceso Abierto
    Residuos sólidos generados en la curtiembre: valorización de desechos
    (1994) Cantera, Carlos S.; Greco, Carlos A.; De Giusti, Marisa Raquel; Bereciartúa, Pablo
    Este trabajo esta orientado al estudio de condiciones experimentales para optimizar la descurtición de virutas de cromo a temperatura moderada, en medio alcalino y en presencia de una enzima proteolítica para facilitar la degradación del complejo colágeno-cromo, y obtener un hidrolizado proteico con bajo contenido de cromo (III) (inferior a 2 mg/kg de proteína seca) y una “torta de cromo” para recuperar la sal curtiente.