Publicações - engenharias
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DE CARVALHO, JÚLIO CESAR;
luis Alberto Junior Letti;
Rodrigues, Cristine;
Adenise Lorenci Woiciechowski;
Soccol, Carlos Ricardo;
DE SOUZA VANDENBERGHE, LUCIANA PORTO;
SYDNEY, EDUARDO BITTENCOURT;
Karp, Susan Grace;
MAGALHÃES, ANTONIO IRINEUDO;
MARTINEZ-BURGOS, WALTER JOSÉ;
Adriane Medeiros;
Thomaz-Soccol, Vanete;
VIEIRA, SABRINA
Palavra-chave:
Agroindustrial Residues;
bioeconomy;
biofuel;
Biorefinery
resumo ...
Sugarcane ethanol production generates about 360 billion liters of vinasse, a liquid effluent with an average chemical oxygen demand of 46,000 mg/L. Vinasse still contains about 11% of the original energy from sugarcane juice, but this chemical energy is diluted. This residue, usually discarded or applied in fertigation, is a suitable substrate for anaerobic digestion (AD). Although the technology is not yet widespread—only 3% of bioethanol plants used it in Brazil in the past, most discontinuing the process—the research continues. With a biomethane potential ranging from 215 to 324 L of methane produced by kilogram of organic matter in vinasse, AD could improve the energy output of sugarcane biorefineries. At the same time, the residual digestate could still be used as an agricultural amendment or for microalgal production for further stream valorization. This review presents the current technology for ethanol production from sugarcane and describes the state of the art in vinasse AD, including technological trends, through a recent patent evaluation. It also appraises the integration of vinasse AD in an ideal sugarcane biorefinery approach. It finally discusses bottlenecks and presents possible directions for technology development and widespread adoption of this simple yet powerful approach for bioresource recovery.
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SARMIENTO, HUGO;
Potgieter-Vermaak, Sanja;
BORILLO, GUILHERME C.;
GODOI, ANA FLÁVIA L.;
REIS, RODRIGO A.;
Carlos Itsuo Yamamoto;
PAULIQUEVIS, THEOTONIO;
POLEZER, GABRIELA;
Ricardo Henrique Moreton Godoi
Palavra-chave:
BTEX;
Porto de Paranaguá
Áreas do conhecimento:
Engenharias; Engenharia Química; Ambiental
resumo ...
Port-related activities have a detrimental impact on the air quality both at the point of source and for considerable distances beyond. These activities include, but are not limited to, heavy cargo traffic, onboard, and at-berth emissions. Due to differences in construction, operation, location, and policies at ports, the site-specific air pollution cocktail could result in different human health risks. Thus, monitoring and evaluating such emissions are essential to predict the risk to the community. Environmental agencies often monitor key pollutants (PM2.5, PM10, NO2, SO2), but the volatile organic carbons (VOCs) most often are not, due to its analytical challenging. This study intends to fill that gap and evaluate the VOC emissions caused by activities related to the port of Paranaguá — one of the largest bulk ports in Latin America — by characterizing BTEX concentrations at the port and its surroundings. At seven different sites, passive samplers were used to measure the dispersion of BTEX concentrations throughout the port and around the city at weekly intervals from November 2018 to January 2019. The average and uncertainty of BTEX concentrations (µg m−3) were 0.60 ± 0.43, 5.58 ± 3.80, 3.30 ± 2.41, 4.66 ± 3.67, and 2.82 ± 1.95 for benzene, toluene, ethylbenzene, m- and p-xylene, and o-xylene, respectively. Relationships between toluene and benzene and health risk analysis were used to establish the potential effects of BTEX emissions on the population of the city of Paranaguá. Ratio analysis (T/B, B/T, m,p X/Et, and m,p X/B) indicate that the BTEX levels are mainly from fresh emission sources and that photochemical ageing was at minimum. The cancer risk varied across the sampling trajectory, whereas ethylbenzene represented a moderate cancer risk development for the exposed population in some of the locations. This study provided the necessary baseline data to support policymakers on how to change the circumstances of those currently at risk, putting in place a sustainable operation.
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SARMIENTO, HUGO;
Potgieter-Vermaak, Sanja;
BORILLO, GUILHERME C.;
Ana Flavia Locateli Godoi;
REIS, RODRIGO A.;
YAMAMOTO, CARLOS I.;
PAULIQUEVIS, THEOTONIO;
POLEZER, GABRIELA;
Ricardo Henrique Moreton Godoi
Palavra-chave:
BTEX;
Health risks;
port
resumo ...
Port-related activities have a detrimental impact on the air quality both at the point of source and for considerable distances beyond. These activities include, but are not limited to, heavy cargo traffic, onboard, and at-berth emissions. Due to differences in construction, operation, location, and policies at ports, the site-specific air pollution cocktail could result in different human health risks. Thus, monitoring and evaluating such emissions are essential to predict the risk to the community. Environmental agencies often monitor key pollutants (PM2.5, PM10, NO2, SO2), but the volatile organic carbons (VOCs) most often are not, due to its analytical challenging. This study intends to fill that gap and evaluate the VOC emissions caused by activities related to the port of Paranaguá — one of the largest bulk ports in Latin America — by characterizing BTEX concentrations at the port and its surroundings. At seven different sites, passive samplers were used to measure the dispersion of BTEX concentrations throughout the port and around the city at weekly intervals from November 2018 to January 2019. The average and uncertainty of BTEX concentrations (µg m−3) were 0.60 ± 0.43, 5.58 ± 3.80, 3.30 ± 2.41, 4.66 ± 3.67, and 2.82 ± 1.95 for benzene, toluene, ethylbenzene, m- and p-xylene, and o-xylene, respectively. Relationships between toluene and benzene and health risk analysis were used to establish the potential effects of BTEX emissions on the population of the city of Paranaguá. Ratio analysis (T/B, B/T, m,p X/Et, and m,p X/B) indicate that the BTEX levels are mainly from fresh emission sources and that photochemical ageing was at minimum. The cancer risk varied across the sampling trajectory, whereas ethylbenzene represented a moderate cancer risk development for the exposed population in some of the locations. This study provided the necessary baseline data to support policymakers on how to change the circumstances of those currently at risk, putting in place a sustainable operation.
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Eduardo Márcio de Oliveira Lopes;
Eduardo Márcio de Oliveira Lopes;
José João de Espíndola;
José João de Espíndola;
José João de Espíndola;
José João de Espíndola
Palavra-chave:
Identification;
Dynamic Characterization;
Optimization;
Kriging method
resumo ...
The finite element method (FEM) is a useful numerical tool for solving engineering problems in general. FEM simulates the behavior of several structures regarding the boundary conditions applied. However, the FEM solution presents differences when compared to experimental data. A systematic approach called finite element method update (FEMU) can reduce those differences. Here, the structural or material parameters change following an optimization problem. Thus, this study aims to characterize the dynamic behaviors of structures using a methodology of FEMU. This methodology reduces the differences between the numerical and experimental dynamic behavior of structures. Also, it uses the Kriging surrogate and experimental data to identify geometric parameters and boundary conditions. We perform the simulations and the experiments in two structures: a fixed-free beam and a frame structure. The objective function quantifies the square root of the sum of the weighted quadratic differences between numerical and experimental frequency response functions. We develop numerical models and routines of the methodology in the Abaqus and MATLAB software packages. Finally, the methodology characterizes the numerical dynamic behavior of the studied structures quite accurately regarding the experimental data.
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Debora Abrantes Leal;
Isabel Sousa;
Alexandre C Bastos;
João Tedim;
Fernando Wypych;
Cláudia Eliana Bruno Marino
Palavra-chave:
proteção contra a corrosão;
revestimentos inteligentes;
sistemas lamelares;
técnicas eletroquímicas
Áreas do conhecimento:
Engenharias; Engenharia Elétrica; Telecomunicações;
Engenharias; Engenharia de Materiais e Metalúrgica; corrosão & proteção
resumo ...
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Bernardo de Almeida Villanueva;
CATAPAN, Anderson;
LOUSADA, SÉRGIO ANTÓNIO NEVES
Palavra-chave:
cooperativismo;
cooperativas de energia;
Desenvolvimento Regional;
energias renováveis;
Geração Distribuída;
transição energética
resumo ...
(en)
As cooperativas de energia emergem como elementos-chave na transição energética, permitindo que cidadãos se tornem produtores independentes de energia, promovendo uma matriz descentralizada e sustentável. Este artigo apresenta uma sistematização do conhecimento existente sobre as diversas dimensões do cooperativismo de energia, a fim de oferecer uma compreensão consolidada de sua aplicabilidade e potencial impacto na transição energética no contexto brasileiro.
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PEIXOTO, LUIS OTÁVIO MIRANDA;
LIMA, BARBARA ALVES DE;
ALMEIDA, CAMILA DE CARVALHO;
Cristovão Vicente Scapulatempo Fernandes;
CENTENO, JORGE ANTONIO SILVA;
Julio Cesar de Azevedo
Palavra-chave:
Contaminants of emerging concern;
environmental monitoring
Áreas do conhecimento:
Engenharias; Engenharia Sanitária; Recursos Hídricos; Planejamento Integrado dos Recursos Hídricos
resumo ...
ABSTRACT The constant monitoring of water quality is fundamental for the understanding of the...
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João Alfredo Santana;
Evandro Vicente de Oliveira Ferreira;
André Bellin Mariano;
Bruno Pohlot Ricobom;
Bruno Pohlot Ricobom
REVISTA TÉCNICO CIENTÍFICA DO CREA-PR,
v. 1,
n. 33,
p. 127-142,
2023
Palavra-chave:
Tecnologia Assistiva;
Locomoção;
deficientes visuais
resumo ...
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KLUTHCOVSKY, SAMUEL CAVALLI;
SILVA, FRANCIELLY ELIZABETH DE CASTRO;
PEREIRA, JUCÉLIO TOMÁS;
José João de Espíndola
Palavra-chave:
Viscoelastic Dynamic Neutralizers;
Viscoelastic material;
Passive Control of Structures;
Finite Element Models
Áreas do conhecimento:
Engenharias; Mecânica dos Sólidos; Dinâmica dos Corpos Rígidos, Elásticos e Plásticos;
Engenharias; Engenharia Mecânica; Mecânica dos Sólidos; Dinâmica de Estruturas
resumo ...
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PAREDE, VINICIUS TERTULINO;
Clayton Hilgemberg da Costa;
Bruna Machado Mulinari;
Germano Lambert-Torres;
DE ALMEIDA, RICARDO RODRIGUES;
RODRIGUES, RAFAEL;
MÜLLER JUNIOR, VICTOR FREDERICO;
DOS SANTOS, ANDRÉ KATAYAMA;
Alexandre Rasi Aoki;
TEIXEIRA, MATEUS DUARTE;
FERNANDES, THELMA S. PIAZZA;
BARRETO, NATHAN ELIAS MARUCH;
Flavio Lori Grando;
DA SILVA, VANDERLEI APARECIDO;
Fábio Alessandro Guerra;
Milton Pires Ramos
Palavra-chave:
Operação de Sistemas
resumo ...
Synchronized phasor measurement systems are being widely used around the world and have become essential elements in the evolution of the operation of large electrical power systems (EPS). These systems, called Phasor Measurement Units (PMUs), are capable of recording and communicating dynamic data from the EPSs in a synchronized way by GPS and with a high sampling rate, generate a huge set of data that, among many applications, has the capacity to detect events. In this way, this work presents a data management system architecture applied to a real PMU system located in the state of Paraná, Brazil that detects and storages events using principal component analysis and Pearson correlation. This method can detect and store electrical events that occurred during the operation of the national interconnected system of Brazil with good results.
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