Mineralogical, physico-chemical and technological characterization of clays from Maroua (Far-North, Cameroon) for use in ceramic bricks production

Tsozué, Désiré; Nzeugang, Aubin Nzeukou; Mache, Jacques Richard; Loweh, Suilabayuy; Fagel, Nathalie

doi:10.1016/j.jobe.2017.03.008

Cited by 74 publications

(60 citation statements)

References 23 publications

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“…These are the same oxides that were detected in the clay materials from the north of Cameroon. 28 The presence of Al 2 O 3 , Fe 2 O 3 and SiO 2 confirmed the occurrence of kaolinite, goethite and quartz (indicated in XRD data), respectively. The amount of TiO 2 found in the clay was 1.44 %, which could play a significant role as a physical UV filter due to its ability for reflection of UV light and blocking out of sunlight.…”

Section: Chemical Composition Of the Raw Claymentioning

confidence: 59%

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Madikizela¹,

Nkwentsha²,

Mlunguza³

et al. 2017

S.Afr.j.chem.

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Clay has been widely used as photo protectants in rural places of South Africa. Recently, there are wide range of products which are marketed in South Africa as clay cosmetics which are used for photo protection. In this work, in vitro determination of the sun protection factor (SPF) of newly formulated cosmetics produced from natural clay material from the Bizana region in the Eastern Cape Province of South Africa was performed by spectrophotometric means. The SPF values found for clay material, face cream, foundation, face mask and scrub were 1.18, 18.33, 13.71, 6.74 and 9.53, respectively. The same materials were characterized using thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscope (SEM) equipped with energy dispersive spectrometry (EDS) and inductively coupled plasma (ICP). Based on FTIR, XRD, XRF and SEM-EDS results, kaolinite, goethite and quartz were the major minerals found in the clay. Toxic elements such as mercury and cadmium were not detected during ICP analysis; however, traces of lead (0.72-2.14 mg kg -1 ) and arsenic (0.49-0.69 mg kg -1 ) were found in cosmetic products. The results obtained in this study indicate that the cosmetic products manufactured from clay have sun protection ability. KEYWORDSSun protection factor, cosmetic products, natural clay material.

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Section: Chemical Composition Of the Raw Claymentioning

confidence: 59%

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Madikizela¹,

Nkwentsha²,

Mlunguza³

et al. 2017

S.Afr.j.chem.

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“…These values are close to those reported for some waste bricks. [41,53]. The average pore size was about 7.90 nm, confirming the non-porous character of these materials.…”

Section: Characterization Of the Used Wbmentioning

confidence: 62%

“…The silica content was close to that reported for other brick materials from different origins. [33,34,41]. Generally, the basic treatment of non-calcined clays results in the dissolution of the amorphous silica phase [43,44].…”

Section: Characterization Of the Used Wbmentioning

confidence: 99%

“…The origin of clay minerals affected its chemical properties and its resulting derived materials [37][38][39][40]. The resulting bricks varied in chemical and textural compositions from one place to another, depending on their geological origin and the presence of organic and inorganic impurities [41][42][43]. This study was carried out to test the hypothesis that the waste bricks obtained from different areas, using different clays, could affect their physiochemical properties and if the resulting waste materials would be effective in the removal of BB-41 in various conditions.…”

Section: Introductionmentioning

confidence: 99%

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Waste Bricks Applied as Removal Agent of Basic Blue 41 from Aqueous Solutions: Base Treatment and Their Regeneration Efficiency

et al. 2019

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Waste brick materials were applied as removal materials of basic blue 41 (BB-41) from artificially contaminated water. They were characterized by different techniques prior their use. A series of removal tests were carried out at different conditions, such as a dosage effect, pH value, initial concentrations, and chemical treatment. The removal results indicated that the two untreated waste bricks had limited removal capacities of basic blue 41, ranging from 19 to 30 mg/g. However, these values were improved upon treatment with NaOH solution or by increasing the removal temperature. Waste brick collected from the Medina area (Med-WB) exhibited higher removal capacity compared to the one collected from the Jeddah area (Jed-WB), with a maximum removal capacity of 60 mg/g at 60 °C. The pH of the BB-41 solution also played an important factor, as it improved the removal amounts from 25 mg/g to 45 mg/g at initial concentration of 200 mg/L. The regenerative process was studied using oxidative reaction of the removed basic blue 41 with a solution of oxone and cobalt nitrate. The efficiency was maintained after 5 runs for Med-WB, with a slight variation of 25%, while it felt to 50% for Jed-WB material after three runs. These data indicate that the waste brick materials present as potential candidates for the dye removal and their origin has to be identified.

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“…Raw clay and modified clay have recently received great advantage due to their potential applications in diverse areas of research. They have been extensively used in absorption , ceramic , cosmetic, pharmaceutical , and catalysis . Different clay‐based materials have been applied to photo‐catalysis and adsorption, including, mainly pillared clays, modified organo‐clays, and acid‐modified clays .…”

Section: Introductionmentioning

confidence: 99%

Physicochemical characterization of new natural clay from south west of Algeria: Application to the elimination of malachite green dye

Lahcene

Behilil

Brahim

et al. 2019

Env Prog and Sustain Energy

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Volcanic clay from Aïn Ouarka south west of Algeria (CA) was used to remove malachite green (MG). This material was purified and sodified (CA‐Na+). They were characterized by different analysis techniques such as BET, SEM, XRD, ATG‐ATD, FTIR, and the cation‐exchange capacity (CEC). Batch adsorption tests were performed to examine the effect of several parameters such as contact time, pH of solutions, initial concentration, and temperature. The present study is the first to be carried out hitherto regarding natural clay, where the obtained results show that the clay contains two phases, Sericite 2M1 and Clinochlore, with good crystalline, very compact and layered structure. The adsorption of MG dye reached its maximum at pH close to 6. Kinetic and isothermal experiments were studied to establish the equilibrium time and adsorption capacity of the two clays. Two kinetic models; the pseudo‐first and pseudo‐second order models were used. Two isothermal equations, Freundlich and Langmuir were applied for the modeling of adsorption isotherms by the linear method. The maximum adsorption capacities calculated from Langmuir equation of CA and CA‐Na+ are 166 and 126 mg g−1, respectively. A significant variation of temperature demonstrated that the adsorption phenomenon was an endothermic process. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13152, 2019

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Mineralogical, physico-chemical and technological characterization of clays from Maroua (Far-North, Cameroon) for use in ceramic bricks production

Cited by 74 publications

References 23 publications

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Waste Bricks Applied as Removal Agent of Basic Blue 41 from Aqueous Solutions: Base Treatment and Their Regeneration Efficiency

Physicochemical characterization of new natural clay from south west of Algeria: Application to the elimination of malachite green dye

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