Ariovaldo Bolzan

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In this study, an application of a multivariable conventional control structure of the continuous tray distillation columns is compared to a new distributed proposal. This was done considering the process dynamics, more specifically the transition time when the process is disturbed. As the conventional approach, the top and bottom product temperatures of(More)
In this work, a case study of recycling of polymeric wastes through pyrolysis is carried out. These wastes were originated from companies of the South of Brazil and are considered critical regarding their generated volume and harmfulness degree. The studied wastes were: Polypropylene(PP), Acrylonitrile Butadiene Styrene(ABS) and paint sludge waste. In this(More)
An approach that is commonly used for calculating the retention time of a compound in GC departs from the thermodynamic properties ΔH, ΔS and ΔCp of phase change (from mobile to stationary). Such properties can be estimated by using experimental retention time data, which results in a non-linear regression problem for non-isothermal temperature programs. As(More)
Microtheca semilaevis Stal is a phythophagous insect associated to Brassicaceae, and frequently occurs with other species of beetles, such as Microtheca ochroloma Stal. Despite its importance to organic farmers, there is no information in the Brazilian literature about its natural enemies. Stiretrus decastigmus (Herrich-Schaeffer) was first found and here(More)
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