Thermal and chemical modification of bentonite for adsorption of an anionic dye

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ROSTAMI ELAHE; Norouzbeigi Reza; Rahbar Kelishami Ahamd

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Journal: ADVANCES IN ENVIRONMENTAL TECHNOLOGY Year:2018 | Volume:4 | Issue:1 Page(s): 1-12

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Title

Thermal and chemical modification of bentonite for adsorption of an anionic dye

Author(s)

ROSTAMI ELAHE | Norouzbeigi Reza | Rahbar Kelishami Ahamd | Issue Writer Certificate

Keywords

Adsorption

Bentonite

Congo red

Langmuir

Thermal and chemical

modification

Abstract

Raw Bentonite (RB), a known low-cost versatile clay was used as an adsorbent. RB was treated thermally and chemically to increase its Adsorption capacity. For thermal treatment (TTB), the Bentonite was heated at 400 ° C for 60 min, and for the chemical modification, its surface was treated by cetyltrimethylammonium bromide (CTAB) to prepare organo-modified Bentonite (CTAB-B). The removal of Congo red dye (CR) from aqueous solution was investigated in the batch mode. The prepared adsorbents were characterized by SEM, BET, and FTIR analyses. The effects of various experimental parameters such as contact time, pH, adsorbent dosage, dye concentration and temperature were investigated. The obtained results were in good agreement with the Langmuir isotherm model, and the maximum Adsorption capacity of RB, TTB and CTAB-B was 43. 1, 55. 86 and 116. 28 mg/g, respectively. The Adsorption kinetic was better described by the pseudo-second order kinetic model. The results showed that thermally or chemically modified Bentonite could be proposed as a low-cost adsorbent for the removal of CR from water.

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APA: Copy

ROSTAMI, ELAHE, Norouzbeigi, Reza, & Rahbar Kelishami, Ahamd. (2018). Thermal and chemical modification of bentonite for adsorption of an anionic dye. ADVANCES IN ENVIRONMENTAL TECHNOLOGY, 4(1), 1-12. SID. https://sid.ir/paper/348556/en

Vancouver: Copy

ROSTAMI ELAHE, Norouzbeigi Reza, Rahbar Kelishami Ahamd. Thermal and chemical modification of bentonite for adsorption of an anionic dye. ADVANCES IN ENVIRONMENTAL TECHNOLOGY[Internet]. 2018;4(1):1-12. Available from: https://sid.ir/paper/348556/en

IEEE: Copy

ELAHE ROSTAMI, Reza Norouzbeigi, and Ahamd Rahbar Kelishami, “Thermal and chemical modification of bentonite for adsorption of an anionic dye,” ADVANCES IN ENVIRONMENTAL TECHNOLOGY, vol. 4, no. 1, pp. 1–12, 2018, [Online]. Available: https://sid.ir/paper/348556/en

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