Temat: natural bentonite - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Metal Pillared Bentonite Synthesis and Its Characteristics Using X-Ray Diffraction
Autorzy:: Sisnayati
Said, Muhammad
Aprianti, Nabila
Komala, Ria
Dwipayana, Hendra
Faizal, Muhammad
Powiązania:: https://bibliotekanauki.pl/articles/2202294.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: crystal structure
natural bentonite
pillared bentonite
Al/Fe
Opis:: Modification of bentonite by the Al/Fe metal oxide pillarization process was carried out with metal oxides. The bentonite pillars were successfully characterized using an X-Ray Diffraction (XRD) spectrophotometer. The results of XRD characterization showed the peak diffraction angle (2θ) in metal-pillared bentonite was 26.84° at 698.98 cps. Meanwhile, in thermally and chemically activated bentonite, the peak angles were marked at 20.64° and 26.7°. There is a shift in the peak angle after activation and pillarization. XRD patterns showed dioctahedral smectite and quartz accessory minerals.
Źródło:: Journal of Ecological Engineering; 2022, 23, 12; 68--74
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Adsorption method of purification of stocks from chromium(III) ions by bentonite clays
Autorzy:: Soloviy, Christina
Malovanyy, Myroslav
Palamarchuk, Olga
Trach, Iryna
Petruk, Halyna
Sakalova, Halyna
Vasylinych, Tamara
Vronska, Nataliya
Powiązania:: https://bibliotekanauki.pl/articles/1844378.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: adsorption
bentonite
chromium ions
environmental safety
natural clay sorbents
wastewater purification
Opis:: The process of sorption of chromium(III) ions with a stationary sorbent layer of bentonite clays was investigated. The main advantages of using bentonites in water purification technologies are described: powerful geological reserves, cheap process of rock extraction, easy preparation for transportation and use, possibility of using waste sorbents in other technologies that is why there is no need in costly regeneration. The influence of various factors (process duration, an adsorbent layer) on the degree of wastewater purification from chromium ions, the effect of pumping speed on the dynamic capacity of the sorbent was studied and the effective volume was determined. The adsorption efficacy increases with the increase of the adsorbent layer, what can be explained by the development of the active sorption surface. As the initial concentration of chromium ions increases, the time of appearance of the first traces of the contaminant at the exit of the column increases, as well as the total time to channeling. The results of the studies indicate a higher adsorption capacity of modified bentonite with respect to Cr3+ ions compared to its natural formula. The cleaning efficacy of the solution with a concentration of chromium ions of 0.5 g∙dm–3 is increased by 5% when using 15 g of modified bentonite and 6,5% in the case one uses 20 g compared to the natural form.
Źródło:: Journal of Water and Land Development; 2021, 48; 99-104
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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