Phenol Red Adsorption from Aqueous Solution on the Modified Bentonite
Joint Authors
Quang Khieu, Dinh
My Linh, Nguyen Le
Duong, Tran
Van Duc, Hoang
Thi Anh Thu, Nguyen
Khac Lieu, Pham
Van Hung, Nguyen
Hoa, Le Thi
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-28
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In the present work, the modified bentonites were prepared by the modification of bentonite with cetyltrimethylammonium bromide (CTAB), both cetyltrimethylammonium bromide and hydroxy-Fe cations and both cetyltrimethylammonium bromide and hydroxy-Al cations.
X-ray diffraction (XRD), thermal analysis (TG-DTA), infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and nitrogen adsorption/desorption isotherms were utilized to characterize the resultant modified bentonites.
The modified bentonites were employed for the removal of phenol red dye from aqueous solution.
Phenol red adsorption agreed well with the pseudo-second-order kinetic model.
The equilibrium data were analyzed on the basis of various adsorption isotherm models, namely, Langmuir, Freundlich, and Dubinin‒Radushkevich models.
The highest monolayer adsorption capacity of phenol red at 30°C derived from the Langmuir equation was 166.7 mg·g−1, 125.0 mg·g−1, and 100.0 mg·g−1 for CTAB‒bentonite, Al‒CTAB‒bentonite, and Fe‒CTAB‒bentonite, respectively.
Different thermodynamic parameters were calculated, and it was concluded that the adsorption was spontaneous (∆G° < 0) and endothermic (∆H° > 0), with increased entropy (∆S° > 0) in all the investigated temperature ranges.
American Psychological Association (APA)
My Linh, Nguyen Le& Duong, Tran& Van Duc, Hoang& Thi Anh Thu, Nguyen& Khac Lieu, Pham& Van Hung, Nguyen…[et al.]. 2020. Phenol Red Adsorption from Aqueous Solution on the Modified Bentonite. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1181375
Modern Language Association (MLA)
My Linh, Nguyen Le…[et al.]. Phenol Red Adsorption from Aqueous Solution on the Modified Bentonite. Journal of Chemistry No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1181375
American Medical Association (AMA)
My Linh, Nguyen Le& Duong, Tran& Van Duc, Hoang& Thi Anh Thu, Nguyen& Khac Lieu, Pham& Van Hung, Nguyen…[et al.]. Phenol Red Adsorption from Aqueous Solution on the Modified Bentonite. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1181375
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181375