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Production of Biodiesel Catalysed by Lipase from Thermomyces Lanuginosus in its Soluble Form

20-Jan-2018 | João H. C. Wancura, Daniela V. Rosset, Marcus V. Tres, J. Vladimir Oliveira, Marcio A. Mazutti, Sérgio L. Jahn, The Canadian Journal of Chemical Engineering, 2018

Abstract Biodiesel production through the transesterification of oleaginous sources utilizing alkaline catalysts shows many process drawbacks like the need of a raw material with high purity degree and a high amount of alkaline wastewater generated from the biodiesel washing step. Such ...

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An Integral Criterion for Turbulence Suppression in Swirling Flows

19-Jan-2018 | Ehsan Zaman, Ali Vakil, Mark Martinez, James Olson, The Canadian Journal of Chemical Engineering, 2018

ABSTRACT A numerical study of flow in rotating pipes was conducted to elucidate the relative importance of convection and turbulence. CFD (Computational Fluid Dynamics) simulations of flow inside a rotating pipe (D = 2 cm and L/D = 20) were carried out, using the Reynolds Stress Model, for ...

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An Integral Criterion for Turbulence Suppression in Swirling Flows

19-Jan-2018 | Ehsan Zaman, Ali Vakil, Mark Martinez, James Olson, The Canadian Journal of Chemical Engineering, 2018

ABSTRACT A numerical study of flow in rotating pipes was conducted to elucidate the relative importance of convection and turbulence. CFD (Computational Fluid Dynamics) simulations of flow inside a rotating pipe (D = 2 cm and L/D = 20) were carried out, using the Reynolds Stress Model, for ...

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Estimation of methane yields in continuous biogas reactors using kinetic and mass flow models

19-Jan-2018 | Alastair James Ward, Mr. Lu Feng, Veronica Moset, Henrik Bjarne Moller, Chemical Engineering & Technology, 2018

Abstract The measurement of methane potential during anaerobic digestion has generally been accomplished through batch assays, yet the majority of industrial plants employ a semi‐continuous feeding regime and the estimation of continuous process yield from batch data is not straightforward due ...

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TWO‐STAGE DRY ANAEROBIC DIGESTION PROCESS CONTROL OF BIOWASTE FOR HYDROLYSIS AND BIOGAS OPTIMIZATION

19-Jan-2018 | Federico Micolucci, Hinrich Uellendhal, Chemical Engineering & Technology, 2018

Abstract This study offers an advanced management system which adapts to most of the two‐stage anaerobic dry treatment plants that do not benefit from a local expert in biowaste treatment. This approach takes advantage of pH sensors to control the process within the optimal range to enhance ...

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Management of Gas Storages in Biogas Plants

18-Jan-2018 | Jürgen Kube, Chemical Engineering & Technology, 2018

Abstract This paper gives an overview over different types of gas storages and their pressure/level relationship, which is crucial for the design of the plant's gas system. It focuses on the design of air‐inflated double‐membrane gas storages, their blowers and pressure control valves. During ...

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Laboratory simulation of agricultural biogas plant start‐up

18-Jan-2018 | Kamil Kozłowski, Jacek Dach, Andrzej Lewicki, Marta Cieślik, Wojciech Czekała, Damian Janczak, Michał Brzoski, Chemical Engineering & Technology, 2018

Abstract Due to the large energy potential in terms of biofuels production, in the near future the construction of new biogas plants is expected in Poland. However, before any investment in biogas market, it is necessary to conduct performance tests of methane production from the used ...

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3D‐printing for chemical process laboratories II: measuring liquid‐solid mass transfer coefficients

18-Jan-2018 | Marius Gerrit Gelhausen, Daniel Lenz, Fabian Krull, Vedat Korkmaz, David William Agar, Chemical Engineering & Technology, 2018

Abstract The sulfonation of solid acrylonitrile‐butadiene‐styrene, a feedstock that is often used in the 3D‐printing process of Fused Filament Fabrication, and its application in liquid‐solid mass transfer characterization is reported. The ion exchange capacities were assessed experimentally. ...

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Effects of loading conditions on the nanoindentation creep behavior of nafion 117 membranes

18-Jan-2018 | Re Xia, Hongjian Zhou, Zhennan Zhang, Runni Wu, Wen‐Ping Wu, Polymer Engineering and Science, 2018

In this work, nanoindentation tests on Nafion 117 membranes are conducted under three different sets of loading conditions. The effects of loading/unloading rate, peak load and holding period on the mechanical responses of membranes are analyzed, respectively. The results demonstrate that the ...

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Highly flame retardant and bio‐based rigid polyurethane foams derived from orange peel oil

18-Jan-2018 | C. Zhang, Sanket Bhoyate, M. Ionescu, P. K. Kahol, Ram K. Gupta, Polymer Engineering and Science, 2018

Limonene dimercaptan (LDM), an orange peel oil‐based derivative, and glycerol‐1‐allyl ether (GAE) were used to synthesize bio‐based polyol (LDM‐GAE) using one step photochemical thiol‐ene reaction. The synthesized polyol was used to prepare flame retardant polyurethane foams using dimethyl ...

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