2020
DOI: 10.26434/chemrxiv.12681158
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Physicochemical Characterization of Local Clay from El-Oued Region, Southeastern of Algeria

Abstract: <p>- Investigation of El-Oued natural clay at Saharan zone located Southwest Algerian.</p> <p>- Elaboration and characterization mineralogical and physicochemical</p> <p>- XRD, FTIR, SEM, XRD, BET, and CEC </p> <p>- - The studied clay is mesoporous and it has an isotherm type IV.</p> <p>- - The Clay are rich in illite (62%) and kaolinite (27%), with less percentage of quartz (11.1%).</p> <p>- … Show more

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“…To fraction the clay samples, the method followed here was founded on several processes already applied in previous works [31][32][33]: (i) A series of sieves were used in a cascade to perform preliminary pre-sieving on the unprocessed clay to obtain particle sizes of less than 5 µm; (ii) After that, it was ground into a powder gently and then rinsed with H 2 O 2 (40 mL, 6% w/v) to remove any organic compounds; (iii) After that, the resulting solution was transferred to an Erlenmeyer (1000 mL) was added to the buffer solution of pH 4.8 (80 mL) (16 g sodium acetate and 10 mL of acetic acid); (iv) The resulting solution was transferred to a graduated tube with the addition of a dispersible component, sodium hexametaphosphate (NaPO 3 ) 6 , and allowed to decant for 7 h and 45 min after that floating layer was collected at a depth of 10 cm to produce particles smaller than 2 µm. The granules that were acquired were treated numerous times employing deionized water and centrifuged; finally, (v) One glass slide served as the control and was not subjected to any treatment, while the other slide was subjected to heating at 105 • C for two hours to pick the suitable clay.…”
Section: Pretreatment Of Raw Claymentioning
confidence: 99%
“…To fraction the clay samples, the method followed here was founded on several processes already applied in previous works [31][32][33]: (i) A series of sieves were used in a cascade to perform preliminary pre-sieving on the unprocessed clay to obtain particle sizes of less than 5 µm; (ii) After that, it was ground into a powder gently and then rinsed with H 2 O 2 (40 mL, 6% w/v) to remove any organic compounds; (iii) After that, the resulting solution was transferred to an Erlenmeyer (1000 mL) was added to the buffer solution of pH 4.8 (80 mL) (16 g sodium acetate and 10 mL of acetic acid); (iv) The resulting solution was transferred to a graduated tube with the addition of a dispersible component, sodium hexametaphosphate (NaPO 3 ) 6 , and allowed to decant for 7 h and 45 min after that floating layer was collected at a depth of 10 cm to produce particles smaller than 2 µm. The granules that were acquired were treated numerous times employing deionized water and centrifuged; finally, (v) One glass slide served as the control and was not subjected to any treatment, while the other slide was subjected to heating at 105 • C for two hours to pick the suitable clay.…”
Section: Pretreatment Of Raw Claymentioning
confidence: 99%