Permeability to water of sintered clay ceramics

Kam, Sié; Zerbo, Lamine; Bathiebo, J.; Soro, Julien; Naba, Séta; Wenmenga, U.; Traoré, Karfa; Gomina, Moussa; Blanchart, Philippe

doi:10.1016/j.clay.2009.09.005

Cited by 25 publications

(15 citation statements)

References 21 publications

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“…Based on characterization of KORO and SIT clays that were already published (Kam et al, 2009;Sorgho et al, 2016), the mineralogical compositions of the two mineral materials are reported in Table 2. It evidences that KORO and SIT clays have similar mineralogical compositions excepted for the higher goethite content in KORO clay.…”

Section: Resultsmentioning

confidence: 99%

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A study of adsorption of cadmium, copper and lead by two clays from Burkina Faso

Sorgho¹,

Guel²,

Zerbo³

et al. 2019

Int. J. Bio. Chem. Sci

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Water pollution caused by natural and anthropogenic causes become a major problem for many countries around the world in trying to find adequate and accessible means of treating polluted water. For more than a decade, research is focused on local adsorbent materials such as clays. It is in this dynamic that two clays extracted in Burkina Faso and referenced KORO and SIT were used to evaluate their capacities to reduce the content of heavy metals in aqueous solutions simulating waste water. The monitoring of the removal processes uses electrochemical characterizations, as voltammetry, evidencing a removal degree of heavy metals exceeding 90%. Characterizations of the process were also obtained by X-ray diffraction, Infrared Spectroscopy and Scanning Electron Microscopy. It is shown that the removal process occurs through the formation of clay-heavy metals complexes with both KORO and SIT. The three major mechanisms that were evidenced are complexation, ion-exchange and precipitation.

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Section: Resultsmentioning

confidence: 99%

“…The locations of the sites are indicated on the map of Burkina Faso (Figure 1). Both clays, KORO and SIT have already been characterized in earlier work (Kam et al, 2009;Sorgho et al, 2016).…”

Section: Materials and Methods Materialsmentioning

confidence: 98%

A study of adsorption of cadmium, copper and lead by two clays from Burkina Faso

Sorgho¹,

Guel²,

Zerbo³

et al. 2019

Int. J. Bio. Chem. Sci

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“…The SIT (Sitiéna) clay is mined near Banfora city and the Gar talc is mined near Garango city. Chemical compositions and properties of both mineral materials were already reported [7,8]. Mineralogical compositions were obtained by X-ray diffraction using a Bruker D5000 diffractometer operating at 40 kV-40 mA and using the monochromatic CuKα radiation.…”

Section: Methodsmentioning

confidence: 99%

Microstructure and Weibull distribution of rupture strength of clay-talc ceramics

et al. 2019

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The mechanical properties of clay-talc ceramics containing 0 to 10 wt% of talc fired at 1100 °C were obtained by flexural measurements. With the average value of flexural strength of 23.1 MPa, the sample with 5 wt% of talc (G5) was the strongest and it had the lowest value of interconnected pore (64%). The scattering of strength values was described with the Weibull distribution model. For all samples, Weibull plots showed either a typical linear behavior or a multi-stage response and the Weibull modulus varied in a large range of 3 to 14, depending on the ceramic type and on the applied load. Interconnections between pores formed a network of possible failures under the stress field, resulting in a change of Weibull plots. Reducing the grain size range and the pore interconnectivity led to a reduced strength distribution. The flaw size range had a unimodal distribution for sample G5 with homogeneous microstructure and correspondingly a Weibull modulus m=9.79.

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“…These samples were sintered (thermal curing) in a laboratory furnace. A first densification took place below 150 • C from drying the residual water on clay surface [25]. The clay pellets were further heated until chemically bonded water with clay molecules escaped from the clay.…”

Section: Fabrication Of Clay Pellet and Flow-through Columnmentioning

confidence: 99%

Removal of Uranium from Contaminated Water by Clay Ceramics in Flow-Through Columns

Florez

Park

Valles-Rosales

et al. 2017

Water

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Uranium contamination of groundwater increasingly concerns rural residents depending on home wells for their drinking water in communities where uranium is a source of contamination. Established technologies to clean up contaminated aquifers are ineffective in large contaminated areas or are prohibitively expensive. Permeable reactive barriers (PRBs) are a low-cost alternative to these methods. In this paper, the applicability of clay ceramic pellets was investigated as permeable reactive barriers (PRBs) material for the treatment of uranium-contaminated groundwater. Flow-through columns were fabricated and used to mimic the flow path of a contaminant plume through the reactive media. Experiment results show that clay ceramic pellets effectively remove uranium from uranium-contaminated water and also can be a cost-efficient technique for remediating uranium contaminated groundwater by a clay pellet barrier. Using clay ceramic pellets is also a practical treatment method for uranium removal from drinking water and can supply potable water for households in the affected areas.

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Permeability to water of sintered clay ceramics

Cited by 25 publications

References 21 publications

A study of adsorption of cadmium, copper and lead by two clays from Burkina Faso

A study of adsorption of cadmium, copper and lead by two clays from Burkina Faso

Microstructure and Weibull distribution of rupture strength of clay-talc ceramics

Removal of Uranium from Contaminated Water by Clay Ceramics in Flow-Through Columns

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