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Impact of Silver Sulphide on Gold Cyanidation with Conductive Sulphide Minerals

19.04.2017 | Muhammad Khalid, Faïçal Larachi, Alain Adnot, The Canadian Journal of Chemical Engineering, 2017

ABSTRACT Gold is mostly found in metallic form, while silver exists in various mineral forms. Pyrite, chalcopyrite, sphalerite, and stibnite were the sulphidic minerals investigated for the effect of silver sulphide on gold cyanidation. Four sets of mineral systems, pyrite‐silica, ...

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Modeling and optimization of sulfonated poly (ether ether ketone) nanofibrous proton exchange membranes with response surface methodology

19.04.2017 | Mehdi Sadrjahani, Ali Akbar Gharehaghaji, Mehran Javanbakht, Polymer Engineering and Science, 2017

The morphological control of proton conductive nanofibrous mat used in proton exchange membranes (PEMs) is a key issue to improve proton conductivity of PEMs. In this study, response surface methodology (RSM) was utilized to investigate the morphological characterizations of electrospun ...

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Ductile‐to‐brittle transition behavior of low molecular weight polycarbonate under carbon dioxide

19.04.2017 | Tomoaki Taguchi, Ramu Miike, Tomoe Hatakeyama, Hiromu Saito, Polymer Engineering and Science, 2017

We investigated the stress–strain behavior of low molecular weight polycarbonate for optical disc grade (OD‐PC) under carbon dioxide (CO2) at various pressures, and compared the results with that under ambient pressure at various temperatures. Elongation at break decreased sharply with increased ...

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Influence of surface topography, crystallinity, and thermal conductivity on reflectance and color of metallic‐effect high‐density polyethylene parts filled with aluminum pigments

19.04.2017 | Xinmi Hong, Xiaoting Xiao, Zhengrong Zhang, Jie Yang, Jingjing Zhang, Polymer Engineering and Science, 2017

Metallic effect in injection molded parts is created using composites of high‐density polyethylene (HDPE) filled with high‐sparkle aluminum (Al) pigments (HDPE/Al). The mechanism of micro shrinkage induced by the leafing phenomenon influences the surface topography and roughness, and has been ...

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Process Operating Performance Optimality Assessment with Coexistence of Quantitative and Qualitative Information

13.04.2017 | Xiaoyu Zou, Yuqing Chang, Fuli Wang, Luping Zhao, The Canadian Journal of Chemical Engineering, 2017

ABSTRACT When the process is working normally, process operating performance optimality assessment makes a further judgment on how well the process is running currently. Sustained optimal process operating performance guarantees the greatest economic benefits. However, the operating ...

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Production of menthol‐loaded nanoparticles by solvent displacement

13.04.2017 | Ada Ferri, Naveeta Kumari, Roberta Peila, Antonello A. Barresi, The Canadian Journal of Chemical Engineering, 2017

Abstract The production of producing menthol‐loaded poly‐ϵ‐caprolactone nanoparticles (NPs) for dermal application was investigated. The nanoparticles were produced in three different mixers: a confined impinging jet mixer (CIJM), a two‐inlet vortex mixer (VM) and a four‐inlet vortex mixer ...

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An effective fault diagnosis approach based on optimal weighted least squares support vector machine

12.04.2017 | Shiming He, Xinggao Liu, Yalin Wang, Shenghu Xu, Jiangang Lu, Chunhua Yang, Shengwu Zhou, Youxian Sun, Weihua Gui, W ..., The Canadian Journal of Chemical Engineering, 2017

ABSTRACT Fault diagnosis is always a vital technology in the chemical industry and is influenced by a large number of process variables in the practical manufacturing process. Thus, an effective diagnosis method is crucial in practical chemical process. A novel fault diagnosis method is ...

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Comment on the paper “Combined heat and mass transfer of third‐grade nanofluids over a convectively‐heated stretching permeable surface,” Waqar A. Khan, J. Richard Culham and O. Daniel Makinde, The Canadian Journal of Chemical Engineering, Volume 93, October 2015, 1880–1888

11.04.2017 | Asterios Pantokratoras, The Canadian Journal of Chemical Engineering, 2017

Abstract The present comment concerns some doubtful results included in the above paper. This article is protected by copyright. All rights reserved

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A Techno‐economic Analysis of Chemical Processing with Ionizing Radiation

10.04.2017 | Thomas B. McConnaughy, Matthew R. Shaner, Eric W. McFarland, Chemical Engineering & Technology, 2017

Abstract Photons and electrons with energies above the ionization potential of most atoms can be used to facilitate chemical reactions not otherwise possible thermochemically or under more preferable process conditions. These ionizing radiations have a wide range of potential chemical process ...

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A Contribution to the Solution Thermodynamics of Chiral Lactide

10.04.2017 | Hannes Buchholz, Andreas Seidel-Morgenstern, Heike Lorenz, Chemical Engineering & Technology, 2017

Abstract Solubilities and solution enthalpies of the enantiopure (L)‐lactide and the racemic molecular compound (DL)‐lactide are examined. Different experimental methods are used to isolate and specify relevant thermodynamic contributions of the solution enthalpy. Therefore, measurements of ...

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