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首页> 外文期刊>International Journal of Electrochemical Science >Synergistic Adsorption of N–dodecyl Ethylenediamine Along with Polyethylene Glycol (PEG) on Quartz
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Synergistic Adsorption of N–dodecyl Ethylenediamine Along with Polyethylene Glycol (PEG) on Quartz

机译：N-十二烷基乙二胺与聚乙二醇（PEG）在石英上的协同吸附

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With the purpose of investigating the synergistic adsorption of polyethylene glycol (PEG) and N–dodecyl ethylenediamine (ND) on quartz surface, froth flotation accompanying with zeta potentialmeasurements, FTIR studies, SEM/EDS analysis and molecular dynamics simulations were conductedin laboratory. Flotation results indicated that quartz flotation recovery could be improved significantlyby the addition of PEG using ND as collector. The highest flotation recovery of quartz could beobtained when ND and PEG were mixed at a mass ratio of 1:1. Synthetic mixture of hematite andquartz could be separated at neutral slurry pH. Zeta potential measurements, FTIR analyses and SEMEDS studies revealed the co–adsorption of PEG along with ND on quartz surface. The addition of PEGstrengthened the electrostatic and hydrogen bond adsorption between quartz and collector.Furthermore, molecular dynamics simulations revealed the even stronger adsorption between ND/PEGmixture and quartz compared with ND or PEG adsorb individually.
机译：为了研究聚乙二醇（PEG）和N-十二烷基乙二胺（ND）在石英表面上的协同吸附作用，在实验室中进行了泡沫浮选和zeta电位测量，FTIR研究，SEM / EDS分析和分子动力学模拟。浮选结果表明，通过使用ND作为捕收剂添加PEG，可以显着提高石英浮选的回收率。当ND和PEG以1：1的质量比混合时，石英的浮选回收率最高。赤铁矿和石英的合成混合物可以在中性浆液pH下分离。 Zeta电势测量，FTIR分析和SEMEDS研究表明，PEG和ND在石英表面的共吸附。 PEG的加入增强了石英和集电体之间的静电和氢键吸附。此外，分子动力学模拟显示，与ND或PEG单独吸附相比，ND / PEG混合物与石英之间的吸附甚至更强。

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