Hectorite-CTAB-alginate composite beads for water treatment: kinetic, isothermal and thermodynamic studies

None Asranudin; Holilah; Adi Setyo Purnomo; Hasliza Bahruji; Dalia Allouss; Ilias El Alaoui-Elbalrhiti; Riki Subagyo; Alya Awinatul Rohmah; Didik Prasetyoko

doi:10.1039/d2ra06934b

Hectorite-CTAB-alginate composite beads for water treatment: kinetic, isothermal and thermodynamic studies

None Asranudin, Holilah, Adi Setyo Purnomo^*, Hasliza Bahruji, Dalia Allouss, Ilias El Alaoui-Elbalrhiti, Riki Subagyo, Alya Awinatul Rohmah, Didik Prasetyoko^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Encapsulation of hectorite-modified CTAB with Ca-alginate formed reusable adsorbent beads for wastewater treatment. The thermogravimetric analysis (TGA) investigation indicated excellent thermal stability results for BHec-40 compared to Hec-40. Although the mesoporous surface area of BHec-40 decreased to 79.74 m² g⁻¹ compared to 224.21 m² g⁻¹ for Hec-40, the hectorite-CTAB-alginate beads showed high adsorption capacity and stability for methyl orange (MO) adsorption with more than 60% removal after five adsorption-desorption cycles. The influence of pH (3-11), temperature (30, 40, and 50 °C), initial concentration (50-400 mg L⁻¹), and contact time were studied to obtain the kinetics and thermodynamics of adsorption. The outcomes revealed a maximum monolayer adsorption capacity of 117.71 mg g⁻¹ for BHec-40. The kinetics of adsorption demonstrated the suitability of using the pseudo-first-order kinetic model, while the equilibrium adsorption data follows the Langmuir isotherm. Thermodynamic analysis indicates physisorption of MO onto BHec-40. BHec-40 improves the reusability as an adsorbent for the removal of anionic dyes from aqueous media.

Original language	English
Pages (from-to)	790-801
Number of pages	12
Journal	RSC Advances
Volume	13
Issue number	2
DOIs	https://doi.org/10.1039/d2ra06934b
Publication status	Published - 3 Jan 2023

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title = "Hectorite-CTAB-alginate composite beads for water treatment: kinetic, isothermal and thermodynamic studies",

abstract = "Encapsulation of hectorite-modified CTAB with Ca-alginate formed reusable adsorbent beads for wastewater treatment. The thermogravimetric analysis (TGA) investigation indicated excellent thermal stability results for BHec-40 compared to Hec-40. Although the mesoporous surface area of BHec-40 decreased to 79.74 m2 g−1 compared to 224.21 m2 g−1 for Hec-40, the hectorite-CTAB-alginate beads showed high adsorption capacity and stability for methyl orange (MO) adsorption with more than 60% removal after five adsorption-desorption cycles. The influence of pH (3-11), temperature (30, 40, and 50 °C), initial concentration (50-400 mg L−1), and contact time were studied to obtain the kinetics and thermodynamics of adsorption. The outcomes revealed a maximum monolayer adsorption capacity of 117.71 mg g−1 for BHec-40. The kinetics of adsorption demonstrated the suitability of using the pseudo-first-order kinetic model, while the equilibrium adsorption data follows the Langmuir isotherm. Thermodynamic analysis indicates physisorption of MO onto BHec-40. BHec-40 improves the reusability as an adsorbent for the removal of anionic dyes from aqueous media.",

author = "None Asranudin and Holilah and Purnomo, {Adi Setyo} and Hasliza Bahruji and Dalia Allouss and {El Alaoui-Elbalrhiti}, Ilias and Riki Subagyo and Rohmah, {Alya Awinatul} and Didik Prasetyoko",

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year = "2023",

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day = "3",

doi = "10.1039/d2ra06934b",

language = "English",

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T1 - Hectorite-CTAB-alginate composite beads for water treatment

T2 - kinetic, isothermal and thermodynamic studies

AU - Asranudin, None

AU - Holilah,

AU - Purnomo, Adi Setyo

AU - Bahruji, Hasliza

AU - Allouss, Dalia

AU - El Alaoui-Elbalrhiti, Ilias

AU - Subagyo, Riki

AU - Rohmah, Alya Awinatul

AU - Prasetyoko, Didik

PY - 2023/1/3

Y1 - 2023/1/3

N2 - Encapsulation of hectorite-modified CTAB with Ca-alginate formed reusable adsorbent beads for wastewater treatment. The thermogravimetric analysis (TGA) investigation indicated excellent thermal stability results for BHec-40 compared to Hec-40. Although the mesoporous surface area of BHec-40 decreased to 79.74 m2 g−1 compared to 224.21 m2 g−1 for Hec-40, the hectorite-CTAB-alginate beads showed high adsorption capacity and stability for methyl orange (MO) adsorption with more than 60% removal after five adsorption-desorption cycles. The influence of pH (3-11), temperature (30, 40, and 50 °C), initial concentration (50-400 mg L−1), and contact time were studied to obtain the kinetics and thermodynamics of adsorption. The outcomes revealed a maximum monolayer adsorption capacity of 117.71 mg g−1 for BHec-40. The kinetics of adsorption demonstrated the suitability of using the pseudo-first-order kinetic model, while the equilibrium adsorption data follows the Langmuir isotherm. Thermodynamic analysis indicates physisorption of MO onto BHec-40. BHec-40 improves the reusability as an adsorbent for the removal of anionic dyes from aqueous media.

AB - Encapsulation of hectorite-modified CTAB with Ca-alginate formed reusable adsorbent beads for wastewater treatment. The thermogravimetric analysis (TGA) investigation indicated excellent thermal stability results for BHec-40 compared to Hec-40. Although the mesoporous surface area of BHec-40 decreased to 79.74 m2 g−1 compared to 224.21 m2 g−1 for Hec-40, the hectorite-CTAB-alginate beads showed high adsorption capacity and stability for methyl orange (MO) adsorption with more than 60% removal after five adsorption-desorption cycles. The influence of pH (3-11), temperature (30, 40, and 50 °C), initial concentration (50-400 mg L−1), and contact time were studied to obtain the kinetics and thermodynamics of adsorption. The outcomes revealed a maximum monolayer adsorption capacity of 117.71 mg g−1 for BHec-40. The kinetics of adsorption demonstrated the suitability of using the pseudo-first-order kinetic model, while the equilibrium adsorption data follows the Langmuir isotherm. Thermodynamic analysis indicates physisorption of MO onto BHec-40. BHec-40 improves the reusability as an adsorbent for the removal of anionic dyes from aqueous media.

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ER -

Hectorite-CTAB-alginate composite beads for water treatment: kinetic, isothermal and thermodynamic studies

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