Proposed Mechanisms on Fluoride Sorption

Murugesh, S.; Omine, Kiyoshi; Darchen, André; Sivasankar, V.

doi:10.1007/978-3-319-40686-2_8

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As Ca 2+ precipitates into calcite under alkaline pH with abundant CO 2 , the dissolution of fluorite is thus enhanced, leading to fluorideenriched calcium-poor groundwater. Ozsvath (2009) suggested that in neutral medium the insignificant binding ability of fluoride results in free fluoride ions along with minor amounts of major cation complexes and some minor and/or trace constituent complexes.…”

Section: Discussionmentioning

confidence: 99%

Migration behaviour of fluoride in contaminated soils near ammophos production plant: laboratory studies

Litvinovich

Pavlova

Lavrishchev

et al. 2020

BioComm

View full text Add to dashboard Cite

Fluoride contamination of irrigated alkaline soils (Irragric Anthrosols) is a common problem in the areas of vast cotton production in Uzbekistan. Large number of laboratory measurements using corresponding models allows deeper studying the fluoride mobility in contaminated soil in the vicinity of Ammophos production factory. In a series of column experiments the migration ability of fluoride was studied in Irragric Anthrosols of different particle size distribution and four different experiments using near neutral and acidic washing water in the low, moderate and highly contaminated soils. It has been established that studied soils, located in the zone of airborne emissions from the Ammophos production plants, have a weak fluoride-holding capacity. The intensity of fluoride migration was conditioned by the initial level of soil contamination. Repeated simulated irrigation of the soil didn’t result in complete removal of fluoride. At low contamination level (3.5 mg F/kg soil) on sandy-loam soil, concentration of fluoride increased with increasing of the volume of leaching moisture. With medium contamination level (6.1 mg F/kg soil) on a loamy soil, the average leaching rate was near zero throughout the measurement interval. At high contamination level (17.5 mg/kg) on heavy textured soil, the increase in the concentration of fluoride in the eluates was observed throughout the entire study interval and posed a threat of ground water contamination.

show abstract

Section: Discussionmentioning

confidence: 99%