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5.391 Aktuelle Fachpublikationen zum Thema temperature

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Parameters influencing dilute‐phase pneumatic conveying through pipe systems: A computational study by the Euler/Lagrange approach

10.10.2014 | Martin Sommerfeld, Santiago Lain, The Canadian Journal of Chemical Engineering, 2014

Abstract The present contribution summarizes research related to the numerical computation of pneumatic conveying systems applying the Euler/Lagrange approach. For that purpose, a rigorous modelling of the particulate phase was aspired, including the relevant fluid dynamic forces, ...

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Separation of soybean oil from liquefied n‐butane and liquefied petroleum gas by membrane separation process

10.10.2014 | Zuleica Novello, Marcus V. Tres, Marceli F. Silva, J. Vladimir Oliveira, Marco Di Luccio, The Canadian Journal of Chemical Engineering, 2014

Abstract This work investigates the separation of soybean oil/compressed n‐butane and soybean oil/liquefied petroleum gas (LPG) mixtures, using ultra and nanofiltration membranes. For this purpose, soybean oil/n‐butane and soybean oil/LPG in the mass ratio of 1:3 were continuously fed into a ...

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Distribution of mixing efficiency in a split‐cylinder gas‐lift bioreactor for Yarrowia lipolytica suspensions

10.10.2014 | Dan Caşcaval, Ramona Mihaela Matran, Marius Turnea, Alexandra Cristina Blaga, Anca‐Irina Galaction, The Canadian Journal of Chemical Engineering, 2014

Abstract The distribution of mixing efficiency in a split‐cylinder gas‐lift bioreactor has been investigated for Y. lipolytica suspensions with cells concentration varying between 10 and 50 g/l d.w. The results indicated important variation of mixing time on the height of riser or downcomer, ...

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Laboratory investigation into fractal characteristics of methane explosion flame

09.10.2014 | Baisheng Nie, Cheng Wang, Junqing Meng, Fei Xue, Linchao Dai, Process Safety Progress, 2014

This article presents the results of an experimental study which aims to examine flame propagation pattern occurring during methane explosion under different gas concentrations. Five methane‐to‐air volume concentration ratios are tested, namely 8, 9.5, 9.7, 10, and 11%. Flame images are captured ...

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A multiscale approach to study dead end microfiltration of mono and bidispersed particle suspensions

09.10.2014 | Ben Hassan Ines, Lafforgue Christine, Ayadi Abdelmoneim, Schmitz Philippe, The Canadian Journal of Chemical Engineering, 2014

Abstract Microfiltration of particle suspensions is widely used, especially in bioprocess engineering. However, particle accumulation at the filter surface reduces productivity and can modify selectivity of the separation. Numerous macroscopic models have been developed to predict filtration ...

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Modified yield power‐law fluid flow in narrow annuli with inner rotating pipe

09.10.2014 | Titus Ntow Ofei, Sonny Irawan, William Pao, Reza Ettehadi Osgouei, The Canadian Journal of Chemical Engineering, 2014

Abstract A proposed viscosity model for Yield Power‐Law fluid by Souza Mendes and Dutra (SMD), devoid of discontinuities at vanishing shear rate, is adopted in a 3D CFD simulation study. Radial distributions of axial, tangential, and coupled components of velocities are measured along ...

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Effect of solution pH and influence of water hardness on caffeine adsorption onto activated carbons

09.10.2014 | Osorio Moreira Couto Junior, Inês Matos, Isabel Maria da Fonseca, Pedro Augusto Arroyo, Edson Antônio da Silva, Mari ..., The Canadian Journal of Chemical Engineering, 2014

Abstract There has been little research into the effects of the water hardness and pH of surface waters on the adsorption of caffeine on activated carbons. The aim of this study was to determine the influence of these water characteristics on different activated carbons. Caffeine adsorption ...

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Removal of excess fluoride from groundwater using natural coagulant Moringa oleifera lam and microfiltration

09.10.2014 | Vinicíus Masquetti da Conceição, Miriam Carla Bonicontro Ambrosio Ugri, Carole Silveira, Letícia Nishi, Marcelo Fern ..., The Canadian Journal of Chemical Engineering, 2014

Abstract The consumption of water that has a high level of fluoride can result in dental or skeletal fluorosis, which causes changes in the teeth and bones. Thus, this study aimed to verify the efficiency of the reduction of fluoride in groundwater using coagulation with extracts of Moringa ...

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Modelling and optimization of simultaneous styrene and hydrogen production in an industrial hydrogen‐permselective membrane reactor

09.10.2014 | Mohammad Farsi, Amir Rokhgireh, Majid Javidi, The Canadian Journal of Chemical Engineering, 2014

Abstract Coupling reaction and separation in a membrane reactor improves process efficiency and reduces purification cost in the next stages. In this work, the performance of the hydrogen–permselective membrane reactors to produce styrene and hydrogen through ethylbenzene dehydrogenation is ...

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Chiral Resolution of Racemic Cyclopropanecarboxylic Acids in Supercritical Carbon Dioxide

08.10.2014 | Dániel Varga, György Bánsághi, Jorge Agustín Martínez Pérez, Sándor Miskolczi, László Hegedűs, Béla Simándi, Edit Sz ..., Chemical Engineering & Technology, 2014

Abstract The chiral resolution of two racemic cyclopropanecarboxylic acids with the resolving agents (S)‐2‐(N‐benzylamino)butan‐1‐ol and (R)‐1‐phenylethanamine was investigated. The resolutions were based on diastereomer salt crystallization in supercritical carbon dioxide. Unreacted compounds ...

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