Surfactant separation as a technique for physical and chemical characterization of ore processing residues

Prud’homme, François D.; Morency, Maurice; Freyer, K.; Weiß, Holger; Bourne, James H.; Daus, Birgit; Fontaine, Denise; Mattusch, Jürgen; Mineau, Raymond; Préda, Michel; Treutler, Hanns-Christian; Wennrich, Reiner

doi:10.1016/s0048-9697(99)00300-9

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…In a series of papers, Jia and co-authors [44][45][46] have put forward procedures for analysis of 210 Pb and 210 Po in mineral, biological and soil samples. Particularly relevant to our focus on 210 Pb and 210 Po distributions in ores and ore processing residues are separation techniques outlined by Prud'homme et al (1999) [47] for fine-grained multi-phase materials.…”

Section: Crustal Distribution Ofmentioning

confidence: 99%

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

et al. 2018

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Abstract:The distributions of 210 Pb and 210 Po, short half-life products of 238 U decay, in geological and related anthropogenic materials are reviewed, with emphasis on their geochemical behaviours and likely mineral hosts. Concentrations of natural 210 Pb and 210 Po in igneous and related hydrothermal environments are governed by release from crustal reservoirs. 210 Po may undergo volatilisation, inducing disequilibrium in magmatic systems. In sedimentary environments (marine, lacustrine, deltaic and fluvial), as in soils, concentrations of 210 Pb and 210 Po are commonly derived from a combination of natural and anthropogenic sources. Enhanced concentrations of both radionuclides are reported in media from a variety of industrial operations, including uranium mill tailings, waste from phosphoric acid production, oil and gas exploitation and energy production from coals, as well as in residues from the mining and smelting of uranium-bearing copper ores. Although the mineral hosts of the two radionuclides in most solid media are readily defined as those containing parent 238 U and 226 Ra, their distributions in some hydrothermal U-bearing ores and the products of processing those ores are much less well constrained. Much of the present understanding of these radionuclides is based on indirect data rather than direct observation and potential hosts are likely to be diverse, with deportments depending on the local geochemical environment. Some predictions can nevertheless be made based on the geochemical properties of 210 Pb and 210 Po and those of the intermediate products of 238 U decay, including isotopes of Ra and Rn. Alongside all U-bearing minerals, the potential hosts of 210 Pb and 210 Po may include Pb-bearing chalcogenides such as galena, as well as a range of sulphates, carbonates, and Fe-oxides. 210 Pb and 210 Po are also likely to occur as nanoparticles adsorbed onto the surface of other minerals, such as clays, Fe-(hydr)oxides and possibly also carbonates. In rocks, unsupported 210 Pb-and/or 210 Po-bearing nanoparticles may also be present within micro-fractures in minerals and at the interfaces of mineral grains. Despite forming under very limited and special conditions, the local-scale isotopic disequilibrium they infer is highly relevant for understanding their distributions in mineralized rocks and processing products.

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Section: Crustal Distribution Ofmentioning

confidence: 99%

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

et al. 2018

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“…[14] The hydrophobic suspension remains stable indefinitely (the particles do not settle out), whereas, hydrophilic suspensions will settle out over time. The limit between these two categories is relative, is a function of settling time, and is related to zeta potential.…”

Section: Treatment Of Wastewatermentioning

confidence: 99%

The Effect of Synergism Behavior in Binary Mixtures of Some Surfactants with Ethyl Xanthat Absorbed on Clay for Wastewater Treatment

El-Dib

Azzam

Ahmed

2008

Journal of Dispersion Science and Technology

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Surface tension, sedimentation, and turbidity experiments were conducted in order to study the synergism behavior of some surfactants with ethyl xanthat mixtures on the reduction of surface tension of their aqueous solutions and on the hydrophilicity of clay surface for using it as absorbent to oil in wastewater treatment. The following systems were studied: 1) potassium ethyl xanthat (KEX) with sodium cetyl sulphate (SCS); 2) potassium ethyl xanthat with cetyl trimethyl ammonium bromide (CTAB); and 3) potassium ethyl xanthat with ethoxylated palmetic acid (EPA). A synergistic effect of the combined reagents was found to enhance the hydrophilicity of clay and also to reduce the surface tension depending mainly on the surface properties of the mixtures.

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Surfactant separation as a technique for physical and chemical characterization of ore processing residues

Cited by 2 publications

References 10 publications

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

The Effect of Synergism Behavior in Binary Mixtures of Some Surfactants with Ethyl Xanthat Absorbed on Clay for Wastewater Treatment

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