A new approach for characterization of hydrophobization mechanisms of surfactants on muscovite surface

Jiang, Hao; Gao, Ya; Khoso, Sultan Ahmed; Ji, Wanying; Hu, Yuehua

doi:10.1016/j.seppur.2018.09.023

Cited by 20 publications

(7 citation statements)

References 31 publications

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“…The water drop was completely and instantly spread by the surface of the tablet of ground mica and any contact angle was reproduced, which characterises the studied mica as a hydrophilic material, as many authors in literature confirmed [2,[46][47][48][49][50].…”

Section: Wettability Testmentioning

confidence: 74%

Physico-chemical and electrostatic surface characterisation of mica mineral and its applicability on the adsorption of Safranin Orange and Reactive Black 5 dyes

Ribeiro

Andrade

Quesada

et al. 2021

Environmental Technology

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The combined approach of specific surface area (SSA), porosity, microprobe analysis (EMPA), transmission electron microscopy (TEM), scanning electron microscopy (SEM) equipped with EDX and infrared spectroscopy (FTIR) provided the mica mineral physico-chemical and morphological characterisation. The electrostatic surface properties were assessed through the determination of the Point of Zero Charge (pH PZC ) by the drift method and the electrokinetic mica mineral features represented by the Isoelectric Point (pH IEP ) which was carried out through zeta potential measurements. Adsorption tests were performed to correlate the surface charge behaviour of the mica mineral and its influence on the adsorption efficiency of two different dyes, namely: Safranin Orange (SO), as a cationic dye and Reactive Black 5 (RB5), as an anionic dye. The higher adsorption capacity SO dye was observed at pH 9 and achieved almost 83% of removal, while RB5 dye adsorption on mica surface had the highest result, about 45% of removal efficiency, on pH of 3. In both cases, the main mechanism identified that drove this results is the electrostatic force of attraction between the adsorbent edge surface charge (pHdependent) and the ionic nature (anionic or cationic) of the pollutant dyes particles. The preliminary adsorption experiments demonstrated that the raw grounded mica mineral has a greater potential associated with its application on cationic dye removal in wastewater. The present study aimed to detail the main characteristics of the mica mineral in order to evaluate the potential use of such mineral residues in the removal efficiency of contaminated wastewater.

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Section: Wettability Testmentioning

confidence: 74%

Physico-chemical and electrostatic surface characterisation of mica mineral and its applicability on the adsorption of Safranin Orange and Reactive Black 5 dyes

Ribeiro

Andrade

Quesada

et al. 2021

Environmental Technology

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“…Mixed surfactants have attracted a great deal of attention from researchers in various fields, including flotation, oil recovery, drug delivery, daily cosmetics, textiles, and pesticide emulsifiers [ 1 , 2 , 3 , 4 , 5 , 6 ]. Synergistic behavior between two different surfactants results in lower critical micelle concentration (CMC), lower interfacial tension, more stable micelles, and higher solubilization capacity [ 7 , 8 ], which means the combination of surfactants can compensate for each other [ 9 ]. The faster formation of micelles in the mixture reduces the dose of surfactants and their damage to the ecological environment.…”

Section: Introductionmentioning

confidence: 99%

“…Especially, the mixed anionic/cationic surfactants show an extremely ideal synergistic effect due to the strong interaction force between molecules. Additionally, the synergistic mechanism has been generally analyzed by numerous parameters’ measurements, such as contact angle, adsorption, zeta potential, Fourier transform infrared spectroscopy (FTIR), viscosity, surface tension, and conductivity [ 8 , 18 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…Extensive studies have shown that mixed NaOL/DDA surfactants are effectively used for silicate flotation. Flotation separation of silicate ores using NaOL/DDA is adequately mature now and its synergistic mechanism has been reported in a great deal of literature [ 8 , 19 , 30 , 31 ]. The flotation process is typically conducted in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, the self-aggregation behaviors of NaOL, DDA, and their mixture in aqueous solution were investigated using large-scale molecular dynamics’ simulation. Mixed surfactants of anionic-rich system shows excellent flotation and separation performance on silicate minerals [ 8 , 19 , 30 , 32 , 33 ]. In this regard, the effects of a total molecular number and a range of varied molar ratios on the self-aggregation of mixed NaOL/DDA (NaOL-rich) surfactants in aqueous solution were discussed, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Self-Assembly of NaOL-DDA Mixtures in Aqueous Solution: A Molecular Dynamics Simulation Study

Wang

Liu

et al. 2021

Molecules

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The self-assembly behaviors of sodium oleate (NaOL), dodecylamine (DDA), and their mixtures in aqueous solution were systematically investigated by large-scale molecular dynamics simulations, respectively. The interaction mechanisms between the surfactants, as well as the surfactants and solvent, were revealed via the radial distribution function (RDF), cluster size, solvent-accessible surface area (SASA), hydrogen bond, and non-bond interaction energy. Results showed that the molecules more easily formed aggregates in mixed systems compared to pure systems, indicating higher surface activity. The SASA values of DDA and NaOL decreased significantly after mixing, indicating a tighter aggregation of the mixed surfactants. The RDF results indicated that DDA and NaOL strongly interacted with each other, especially in the mixed system with a 1:1 molar ratio. Compared to van der Waals interactions, electrostatic interactions between the surfactant molecules were the main contributors to the improved aggregation in the mixed systems. Besides, hydrogen bonds were found between NaOL and DDA in the mixed systems. Therefore, the aggregates in the mixed systems were much more compact in comparison with pure systems, which contributed to the reduction of the repulsive force between same molecules. These findings indicated that the mixed NaOL/DDA surfactants had a great potential in application of mineral flotation.

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Mechanisms for the selective separation of spodumene from feldspar by sodium N-oleoylsarcosinate as an efficient collector

Xiang

Tao

Sun

et al. 2023

Applied Surface Science

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A new approach for characterization of hydrophobization mechanisms of surfactants on muscovite surface

Cited by 20 publications

References 31 publications

Physico-chemical and electrostatic surface characterisation of mica mineral and its applicability on the adsorption of Safranin Orange and Reactive Black 5 dyes

Physico-chemical and electrostatic surface characterisation of mica mineral and its applicability on the adsorption of Safranin Orange and Reactive Black 5 dyes

Self-Assembly of NaOL-DDA Mixtures in Aqueous Solution: A Molecular Dynamics Simulation Study

Mechanisms for the selective separation of spodumene from feldspar by sodium N-oleoylsarcosinate as an efficient collector

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