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Thus, this work focuses on using molecular dynamics with a united-atom force field to simulate the interface of linear alkane oil, saltwater, and air with three surfactant frothers: methyl ...
The promoting effect of cationic surfactant on low-rank coal flotation with oil collector: A molecular dynamics simulation study Yangchao Xia and Xiahui Gui (China University of Mining and Technology, China) Temperature-responsive polymers as tuneable collectors/depressants in flotation: a review
Molecular modeling studies The first step in the flotation process is adsorption of oleate onto the mineral surface. In this study single crystal surfaces of these minerals were selected. The most stable surfaces for the three mineral were chosen based on previously published results: hematite (0 0 1) [32], magnetite (1 1 1) [33], and ...
@article{osti_1404700, title = {Effects of Frothers and Oil at Saltwater–Air Interfaces for Oil Separation: Molecular Dynamics Simulations and Experimental Measurements}, author = {Chong, Leebyn and Lai, Yungchieh and Gray, McMahan and Soong, Yee and Shi, Fan and Duan, Yuhua}, abstractNote = {Separating oil from saltwater is a process relevant to some industries and may be aided by bubble ...
Frothers are also added to the pulp to have a stable froth (Batisteli and Peres, 2008). Hence, the effect of frother-DDA blends on the bubble size and gas holdup in the downcomer was assessed. Fig. 5 shows the d32 value as a function of MIBC concentration in the absence and presence of various additions of DDA, namely 1, 2 and 4 mg/L.
This work focuses on using molecular dynamics with a united-atom force field to simulate the interface of linear alkane oil, saltwater, and air with three surfactant frothers: methyl isobutyl carbinol (MIBC), terpineol, and ethyl glycol butyl ether.
Such behavior can dramatically change the interfacial properties within the nano-scale of interfacial layer and have significant applications in industrial processes such as mineral flotation. In this study, the adsorption of MIBC (methyl isobutyl carbinol), a popular frother, was investigated by molecular dynamics.
Jan 01, 2017· Read "Foamability of fatty acid solutions and surfactant transfer between foam and solution phases, Minerals Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
The adsorption layer of frother molecules adsorbed at the gas-liquid interface reveals that the α-terpineol molecules are more neatly arranged and better distributed. The DF200 molecules are arranged much more loosely than MIBC molecules.
@article{osti_1366718, title = {Molecular Dynamics Study of the Bulk and Interface Properties of Frother and Oil with Saltwater and Air}, author = {Chong, Leebyn and Lai, Yungchieh and Gray, McMahan and Soong, Yee and Shi, Fan and Duan, Yuhua}, abstractNote = {For water treatment purposes, the separation processes involving surfactants and crude oil at seawater-air interfaces are …
Frother structure–property relationship: Effect of alkyl chain length in alcohols and polyglycol ethers on bubble rise velocity. ... The linear trend observed in Fig. 4b encourages that a fundamental model can be found, for example, based on molecular dynamics, which could be of use in frother design.
Nov 06, 2017· Yangchao Xia, of the China University of Mining and Technology, described a molecular dynamics simulation study on the promoting effect of the cationic surfactants dodecyl trimethyl ammonium bromide (DTAB) and the oil collector dodecaneon on low-rank coal flotation. It was found that dodecane cannot be adsorbed tightly onto the coal surface and ...
Title: The utilization of hydroxypropyl methylcellulose as a flotation frother for chalcopyrite-containing ores Author(s): Rinne, Tommi Date: 2018-11-06 Kemian tekniikan korkeakoulu | Master's thesis
Molecular dynamics simulation study of the stability and conformation of spin-probe labeled DNAs, Eva Darian. PDF. Generalizability of cardiovascular reactivity to stress among doctoral students between laboratory and natural settings, James P. Davig. PDF. Through-wafer interrogation of MEMS device motion, Jeremy Michael Dawson. PDF
Oct 29, 2012· A Brief introduction to molecular dynamics. For more similar videos see
(744f) Frother Performance and Its Influence on Flotation Process. Yee Soong. Fan Shi. ... 2016 AIChE Annual Meeting (ISBN: 978-0-8169-1097-7) (62a) Molecular Dynamics Study of Surfactant and Oil Interactions at Saltwater-Air Interfaces. Leebyn Chong. Yungchieh Lai. Fan Shi. McMahan L. Gray. Yee Soong. Yuhua Duan. 2016 AIChE Annual Meeting ...
Minerals, an international, peer-reviewed Open Access journal. Dear Colleagues, We invite contributions to this Special Issue on aspects listed in the keywords, covering recent advances and innovations in flotation chemistry, which will be of direct interest to researchers …
Jan 29, 2008· Konstantinos N. Raftopoulos, Joanna Pagacz, Jan Ozimek, Stefanos Koutsoumpis, Sławomir Michałowski, Edyta Hebda, Jan Pielichowski and Krzysztof Pielichowski, Molecular dynamics in polyurethane foams chemically reinforced with POSS, Polymer Bulletin, 10.1007/s00289-018-2528-2, 76, 6, (2887-2898), (2018).
However, the micro-adsorption behavior of these collectors on the coal surface remains to be further explored. In the present work, the adsorption behavior of methyl laurate and dodecane, representing biodiesel and common oily collectors, was investigated using experimental and molecular dynamics (MD) simulation methods.
Chowdhuri, S. and Chandra, A., 2001, "Molecular dynamics simulations of aqueous NaCl and KCl solutions: Effects of ion concentration on the single-particle, pair, and collective dynamical properties of ions and water molecules," Journal of Chemical Physics, Vol. 115, No. 8, …
Molecular Dynamics Study of the Bulk and Interface Properties of Frother and Oil with Saltwater and Air. Authors: Leebyn Chong Yungchieh Lai McMahan Gray Yee Soong Fan Shi Yuhua Duan
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Thus, this work focuses on using molecular dynamics with a united-atom force field to simulate the interface of linear alkane oil, saltwater, and air with three surfactant frothers: methyl ...
International Journal of Power and Energy Research is devoted to publishing high-quality experimental and theoretical articles about the latest advancements and findings in energy and power research. The journal covers but is not limited to power generation, solar energy, wave power, wind power, hydro power, waste energy, alternative fuels, safe nuclear energy, distribution systems ...
This paper presents an analysis on the dynamic adsorption of frothers and collectors onto air bubbles in flotation. The analysis was carried out using the theory on the surfactant transfer by diffusion and adsorption. The bubble size was considered when solving …
JAN D MILLER ... Study of spectroscopic characteristics of interfacial water by SFG spectroscopy and molecular dynamics simulation is in progress to understand in more detail the hydrophobic surface state. ... Collector/Frother Distribution during Bubble Attachment and Detachment, X. Wang (presenter) and J.D. Miller, 2012 SME Annual Meeting ...
National Energy Technology Laboratory (DOE) South Park Township, United States ...