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Visualization study on coalescence of droplets with different sizes in external liquid

02.11.2017 | Chaoqun Shen, Xiangdong Liu, Cheng Yu, Yongping Chen, The Canadian Journal of Chemical Engineering, 2017

We experimentally investigate the coalescence between two droplets with different sizes in the surrounding water via high‐speed visualization. We identify three coalescence patterns by clarifying the dynamic interface evolutions, including liquid bridge evolution, capillary wave propagation, ...

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Synthesis and Characterization of Nanocomposite PVA‐SnO2 Mixed Matrix Membranes and Application in Textile Effluent Treatment

24.10.2017 | Jibin Babu, Z.V.P. Murthy, Chemical Engineering & Technology, 2017

Abstract Thin film nanocomposite membranes were prepared by dip‐coating poly(vinyl alcohol) (PVA) and tin oxide (SnO2) nanoparticles over polyethersulfone (PES) membrane support. PVA was cross‐linked using malic acid for stability. The membranes were characterized by FTIR, FEG‐SEM, EDX, TGA, ...

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Direct numerical simulation of turbulent flow over wide‐rib rectangular grooves

18.10.2017 | Chonghai Huang, Qinghui Wang, Jinjia Wei, Bo Yu, The Canadian Journal of Chemical Engineering, 2017

ABSTRACT The turbulent flow over the wide‐rib rectangular grooves, the motions and variations of near‐wall streamwise vortices with time, and the interaction between microgroove and near‐wall streamwise vortices were investigated by direct numerical simulation method (DNS). The distributions ...

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Capturing CO2 by Using a Micro‐algae Culture Recycle Solution

16.10.2017 | Pao-Chi Chen, Po-Han Chou, Sheng-Zhong Lin, Hsiao-Wei Chen, Chemical Engineering & Technology, 2017

Abstract The capture of CO2 by means of a microalgae culture solution was explored in a continuous bubble‐column scrubber under a constant pH environment. Optimum conditions for a pilot‐scale study were evaluated. With the Taguchi method, a total of sixteen runs were required. Absorption rate, ...

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Major process accidents: Their characteristics, assessment, and management of the associated risks

21.09.2017 | Ming Yang, Process Safety Progress, 2017

Major process accidents continue to occur with the advancement of modern process systems. Major process accidents should not be viewed as Black Swan and can be predicted and prevented. This article investigates the characteristics of process accidents. Based on which, a method for the diagnosis ...

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A novel polymer‐based genosensor for the detection and quantification of Streptococcus pneumoniae in genomic DNA sample

08.09.2017 | Fábio P. Ferreira, Ana C. Honorato‐Castro, Jussara Vieira da Silva, Sara‐Cuadros Orellana, Guilherme C. Oliveira, Jo ..., Polymer Engineering and Science, 2017

The Streptococcus pneumoniae detection plays an important role in the diagnosis and monitoring of pneumococcal diseases. A genosensor based on graphite electrodes modified with polymer was developed for such detection. First, the poly(4‐aminophenol) film was electrochemically deposited on a ...

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Isothermal crystallization kinetics of polypropylene in melt‐mixed composites of polypropylene and multi‐walled carbon nanotubes

07.09.2017 | Joyita Banerjee, Suchitra Parija, Ajay S. Panwar, Kingsuk Mukhopadhyay, A. K. Saxena, Arup R. Bhattacharyya, Polymer Engineering and Science, 2017

The isothermal crystallization behaviour of the polypropylene (PP) phase in PP/multi‐walled carbon nanotubes (MWCNTs) composites has been investigated via differential scanning calorimetric analysis, which showed the influence of the varying dispersion level of MWCNTs in the respective PP ...

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Bubble Dynamic Behaviours at Various Capillary Orifices in a Bioreactor with Methane Oxidizing Bacteria Suspension

07.09.2017 | Qin‐Yuan Tang, Cheng‐Long Guo, Hong‐Shan Pei, Fei‐Qiang Guo, The Canadian Journal of Chemical Engineering, 2017

Abstract Bubble dynamic behaviour has a significant influence on methane bioconversion because a gas mixture including methane and oxygen is usually supplied into a bioreactor with a methane oxidizing bacteria suspension via capillary orifice, forming bubbles. In the work, bubble dynamic ...

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Optimization of reactive extraction of C1–C4 aliphatic monocarboxylic acids from aqueous solutions: modeling solvation effect with extended‐LSER, A‐UNIFAC and SPR

07.09.2017 | Aynur Senol, Süheyla Çehreli, Nur Özparlak, Alfonsina E. Andreatta, Asia-Pacific Journal of Chemical Engineering, 2017

Abstract This paper studies reactive extraction of formic (FA), acetic (AA), propionic (PA) and butyric (BA) acids from aqueous solutions by tri‐n‐butyl amine/diluent, with particular focus on proper optimization and modeling of extraction equilibria. The uptake capacities of amine/diluent and ...

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Simulation and Control of Membrane Reactors for Catalytic Reduction of Dissolved Oxygen from Water

06.09.2017 | Mohsen Karegar Ghavibazoo, Ayub Golmakani, Saeid Hosseinipoor, Mohammad‐Reza Rokhforouz, The Canadian Journal of Chemical Engineering, 2017

Abstract Removal of dissolved oxygen (DO) from water has gained much attention in recent decades to prevent different problems such as corrosion, bio‐fouling, and performance degradation in many industries. The traditional physical and chemical methods for DO removal have found wide ...

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