Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Du, Junyi; Wu, Daishe; Xiao, Huayun; Li, Ping

doi:10.1007/s11783-010-0255-5

Cited by 21 publications

(10 citation statements)

References 24 publications

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“…Ion-exchange and adsorption are the most typical processes through which B and F are bound to clay minerals. A thorough study by Du et al (2011) describes the adsorption mechanisms of F -on kaolinite, montmorillonite, chlorite, and illite. In this study, leachate concentrations of B (r = 0.91) and F -(r = 0.81) show a good correlation with K 2 O concentration in the carbonate rocks.…”

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Uppin

Karro

2013

Geochem. J.

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High natural fluoride (up to 6.1 mg/l) and boron (up to 2.1 mg/l) concentrations in groundwater are recorded in western Estonia, where a carbonaceous Silurian-Ordovician aquifer system is the main source of drinking water. The aim of this study is to examine the dissolution of boron and fluoride from different carbonate rocks using batch dissolution tests. The total boron and fluorine concentration within carbonate rocks varies between 100-1000 and 5-150 mg/kg, respectively. Generally, boron and fluoride concentrations increase as the amount of terrigenous material in the rock increases. Laboratory leaching experiments showed that the amount of leached boron and fluoride was proportional to the content of these elements in the rock samples. Further, boron and fluoride concentrations in leachates were positively correlated with the amount of terrigenous material in rocks. Both boron and fluoride concentrations in leachates continually rose over 49 days of leaching. Long-term water-rock interaction is responsible for the high boron and fluoride contents in groundwater of western Estonia.

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Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Uppin

Karro

2013

Geochem. J.

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“…and gibbsite, occupying OH-sites (Romo 1054;Kau et al 1998;Weerasooriya et al 1998;Bower and Hatcher 1967). The substitution of OHby Fin clay minerals is strongly pHdependent (Romo and Roy 1957;Fuge 1988;Du et al 2011) and is enhanced in acidic solutions (Chubar et al 2005). The soil pH of 3-4 for the present location (Epp et al 2020;Fig.…”

Section: Discussionmentioning

confidence: 74%

Halogen (F, Cl, Br, I) contents in silt and clay fractions of a Cambisol from a temperate forest

Epp

Marks

Neidhardt

et al. 2022

American Mineralogist

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In spite of considerable efforts to understand the role of halogens (F, Cl, Br, I) in soil, concentration data for different soil size fractions is still sparse and information on the sorption behavior of halogens in natural soils is limited. We determined total halogen concentrations in different soil horizons and particle size fractions (i.e., coarse silt with 20-63 µm, medium and fine silt with 2-20 µm, coarse clay with 0.2-< 2 µm and medium clay with 0.02-0.2 µm) of a Cambisol from a temperate forest ecosystem in SW Germany. Further, we estimated the minimum proportions of sorbed halogens onto clay minerals and pedogenic oxides for different soil horizons and different particle size fractions. This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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“…At Al 3+ >10-11.94 molL -1 , cryolite forms, while at Al 3+ <10-11.94 molL -1 , AlF 3 is formed. At low C o (0.3-1.5 mg/L), proton transfer occured, and the Fadsorption capabilities of the clay minerals increased with time [34].…”

Section: Sdiri Et Al Observed That the Calcareous Clay Of The Coniacian-earlymentioning

confidence: 99%

Roasted China Clay as a Potential Adsorbent for the Removal of Heavy Metals From Water and Waste Water

2016

IJAERD

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Environmental contamination of water due to toxic heavy metal ions is becoming a serious threat to the environment and human health in particular due to their detrimental accumulation in living tissues, soil and water bodies. Utilization of one waste material to control pollution caused by another is of high significance in the remediation of environmental problems. Clays are abundantly available natural material which has remarkable ability to adsorb heavy metals either in their natural form or after treating with some suitable chemicals. Many types of clays have been employed in removing heavy metals from industrial effluent. Researchers have studied the extent of uptake of different metals with the tested clays under different conditions such as pH, time of clay residence in solution with different concentration of metal and clay's mass. Langmuir, Freundlich adsorption isotherms are commonly used for fitting experimental data. Conventional technologies for the removal of heavy metals from wastewater are proving expensive due to non-regenerable materials used and high costs. Adsorption is an emerging technique offering the use of economical alternative materials as adsorbents for the removal of heavy metals from waste water. Roasted china clay is a waste of ceramic industry which is available free of cost in bulk. It has great potential to remove heavy metals ions from wastewaters. This paper is a review for the use of various clays to exhibit different affinities towards different metals and hence its importance to be employed as an effective adsorbent. For commercial use of roasted china clay to remove metal ions from wastewater, emphasis should be given to the selection of metal to get high sorption capacity. Adequate understanding of sorption mechanism and development of low cost methods facilitate better prediction of metal sorption.

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Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Cited by 21 publications

References 24 publications

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Halogen (F, Cl, Br, I) contents in silt and clay fractions of a Cambisol from a temperate forest

Roasted China Clay as a Potential Adsorbent for the Removal of Heavy Metals From Water and Waste Water

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