Navegação Engenharias por Autor "Trierweiler, Jorge Otávio"
Resultados 1-20 de 26
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Alternative process for production of sweet potato distilled beverage
(2020) [Artigo de periódico]Shochu is the most widely consumed spirit in Japan. In its manufacture is used koji, a solid fungus culture traditional of the Asian countries, but that makes the production process slow. Shochu can be produced from a ... -
Analysis of experimental biosensor/fia lactose measurements
(2003) [Artigo de periódico]Whey is an abundant effluent in the production of cheese and casein. The biotechnological utilization of this economically important and nutritive source is limited mainly because of the presence of high percentages of ... -
An overview of different approaches in hydrogen network optimization via mathematical programming
(2020) [Artigo de periódico]Goal: Hydrogen has shown increasing demand in oil refineries, due to the importance of its use as a sulfur capture element. As different oils and products require different amounts of hydrogen, their use optimally is an ... -
Application of linear and nonlinear mathematical programming to retrofit hydrogen networks
(2021) [Artigo de periódico]Hydrogen network management has economic appeal due to its importance in oil refineries. It has become genuinely relevant due to the restrictions of sulfur content in fuels, which need hydrogen to be removed. Mathematical ... -
Application of the RPN methodology for quantification of the operability of the quadruple-tank process
(2002) [Artigo de periódico]The RPN indicates how potentially difficult it is for a given system to achieve the desired performance robustly. It reflects both the attainable performance of a system and its degree of directionality. Two new indices, ... -
Breakthrough analysis of continuous fixed-bed dehydration of gas streams using 4A zeolite molecular sieve
(2023) [Artigo de periódico]The experimentally investigation for dehydration of gas streams in a fixed-bed adsorption column using a 4A molecular sieve was reported for the first time. Different operating conditions of the adsorption system were ... -
A circular economy model for ethanol and alcohol-based hand sanitizer from sweet potato waste in the context of COVID-19
(2020) [Artigo de periódico]Goal: The goal of the present work is to analyze the techno-economic viability of a biorefinery to generate ethanol and alcohol-based hand sanitizer from sweet potato waste within the concept of a circular economy.Design ... -
Comportamentos dinâmicos em um reator industrial de polimerização em fase gasosa
(2005) [Artigo de periódico]Nos reatores de polimerização em fase gasosa, o controle de temperatura em uma estreita faixa de temperatura é importantíssimo para assegurar que a temperatura na zona de reação seja mantida acima do ponto de orvalho dos ... -
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites
(2020) [Artigo de periódico]The addition of gallium or zinc to ZSM-5 increases the aromatic selectivity and decreases the olefin selectivity for furan conversion. Both the benzene and naphthalenes selectivities increase with small amounts of gallium ... -
Economic evaluation of sweet potato distilled beverage produced by alternative route
(2018) [Artigo de periódico]Shochu is the most consumed distilled beverage in Japan, produced from sweet potato, one of the most cultivated vegetables in Brazil. Tchêchu is a similar distillate, produced by an innovative process, whose economic ... -
Evaluation of wavelength selection methods for 2D fluorescence spectra applied to bioprocess characterization
(2013) [Artigo de periódico]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
(2014) [Artigo de periódico]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 ... -
Heat integration of an olefins plant : pinch analysis and mathematical optimization working together
(2011) [Artigo de periódico]This work explores a two-step, complexity reducing methodology, to analyze heat integration opportunities of an existing Olefins Plant, identify and quantify reduction of energy consumption, and propose changes of the ... -
Influence of NaNO3 concentration and incident light intensity on Nannochloropsis oculata lipid accumulation
(2013) [Artigo de periódico]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
(2019) [Artigo de periódico]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
(2013) [Artigo de periódico]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 ... -
A lactose FIA-biosensor system for monitoring and process control
(2004) [Artigo de periódico]In this work an enzymatic lactose biosensor composed of the immobilized enzymes E- galactosidase and glucose oxidase was developed. Oxygen consumption during the reaction catalyzed by these enzymes was detected. The biosensor ... -
MILP formulation for solving and initializing MINLP problems applied to retrofit and synthesis of hydrogen networks
(2020) [Artigo de periódico]The demand for hydrogen in refineries is growing due to its importance as a sulfur capture element. Therefore, hydrogen management is critical for fulfilling demands as efficiently as possible. Through mathematical modeling, ... -
Multivariable low order structured-controller design by frequency response approximation
(2000) [Artigo de periódico]The method presented here offers an effective and time saving tool for multivariable controller design. The relation between controller complexity and closed loop performance can easily be evaluated. The method consists ... -
Plantwide periodical disturbances isolation and elimination in a petrochemical unit
(2015) [Artigo de periódico]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 ...
