Comparative Studies on Flotation Performance of Saturated Fatty Acids and Unsaturated Fatty Acids Separated from Hogwash Oil

Guo, Wenda; Cai, Yujie; Zhu, Yimin; Li, Yanjun; Sun, Yongsheng

doi:10.3390/min11010050

Cited by 2 publications

(3 citation statements)

References 29 publications

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“…For the hydrocarbon oil–fatty acid mixed collector, it can be found that there are both saturated and unsaturated fatty acids in the choice of fatty acids. In some mineral flotation, researchers have found that mixed fatty acids with a higher proportion of unsaturated fatty acids can enhance flotation. , However, research on the mechanism by which fatty acid saturation affects LRC flotation is still limited.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Fatty Acid Unsaturation on the Intermolecular Weak Interaction at the Low-Rank Coal–Water Interface: Density Functional Theory Calculations and Experimental Study

Liu,

Dong,

Liao

et al. 2024

ACS Omega

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The study on the effect of fatty acid saturation on low-rank coal (LRC) flotation is still limited. In this investigation, density functional theory (DFT) combined with Zeta potential and Fourier transform infrared spectroscopy (FTIR) was used to study the mechanism of intermolecular weak interaction at the LRC− water interface of fatty acids (decanoic acid (DA), undecylenic acid (UA), and phenyl propionic acid (PA)) with different saturations and different dodecane (D) composition hydrocarbon oil−fatty acid mixed collectors (D-DA, D-UA, D-PA). The findings demonstrated that the hydrogen bond interaction and electrostatic interaction between the UA/PA with unsaturated bonded carbon chains and the LRC molecular fragments/water molecules were stronger than DA without a saturated bond carbon chain, and UA/ PA strengthened its interaction with water molecules on the whole, even PA molecules would preferentially interact with water molecules. The unsaturated bond had a minimal impact on the adsorption of the LRC hydrophobic site, and the strength of the hydrogen bond between the mixed collector and LRC is D-DA > D-UA > D-PA. In the actual flotation process, the strong hydrogen bonding and electrostatic interaction between UA/PA and water molecules weaken the collection performance of the mixed collector D-UA/D-PA for LRC, which also confirmed the research results of DFT, FTIR, and Zeta.

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Section: Introductionmentioning

confidence: 99%

“…In some mineral flotation, researchers have found that mixed fatty acids with a higher proportion of unsaturated fatty acids can enhance flotation. 13 , 14 However, research on the mechanism by which fatty acid saturation affects LRC flotation is still limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fatty Acid Unsaturation on the Intermolecular Weak Interaction at the Low-Rank Coal–Water Interface: Density Functional Theory Calculations and Experimental Study

Liu,

Dong,

Liao

et al. 2024

ACS Omega

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“…They found that the oxygen groups contained in waste oil contribute to the hydrophobization of carbon, and confirmed the excellent separation performance of fly ash and unburned carbon. Guo et al (2021) conducted a study on the flotation performance and adsorption properties of saturated and unsaturated fatty acids isolated from hogwash oil to determine which fatty acids have negative effect on the flotation performance. They performed quartz flotation to compare that unsaturated fatty acid shows the excellent adsorption properties on the surface of quartz.…”

Section: Introductionmentioning

confidence: 99%

Efficiency evaluation of the bottom ash flotation collector by removed saturated fatty acids from soybean oil

Kim¹,

Park²,

Kang³

et al. 2021

Physicochem. Probl. Miner. Process.

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Unburned carbon flotation is performed to investigate the separation efficiency of the collector containing poly unsaturated fatty acid on the bottom ash. The results of an experiment using soybean oil collector (S.O. collector) show the high recovery and enrichment ratio at the dosage of 9 kg/ton. In order to investigate the collector efficiency on poly unsaturated fatty acids, a collector is manufactured using the esterification reaction. Unsaturated fatty acid oil collector (U.F.O. collector) is manufactured in which removed saturated fatty acids and increased content of poly unsaturated fatty acid from the S.O. collector. The U.F.O. collector is showed high separation efficiency at 7 kg/ton. The U.F.O. collector concentrates the unburned carbon content of the concentrate and improves the recovery with a low dosage than the S.O. collector. By removing saturated fatty acids and increasing the content of unsaturated fatty acids, this investigation provides that 1) the dosage of a collector can be reduced up to 2 kg/ton difference, and 2) the poly unsaturated fatty acids shows the best performance for adsorption properties on the unburned carbon surface.

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Comparative Studies on Flotation Performance of Saturated Fatty Acids and Unsaturated Fatty Acids Separated from Hogwash Oil

Cited by 2 publications

References 29 publications

Effect of Fatty Acid Unsaturation on the Intermolecular Weak Interaction at the Low-Rank Coal–Water Interface: Density Functional Theory Calculations and Experimental Study

Effect of Fatty Acid Unsaturation on the Intermolecular Weak Interaction at the Low-Rank Coal–Water Interface: Density Functional Theory Calculations and Experimental Study

Efficiency evaluation of the bottom ash flotation collector by removed saturated fatty acids from soybean oil

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