Adsorption of Phenol from Aqueous Solution Using Zn/Al Layered Double Hydroxides-Cellulose Composite

Mohadi, Risfidian; Amri, Amri; Badaruddin, Muhammad; Ahmad, Nur; Lesbani, Aldes

doi:10.26554/sti.2023.8.1.123-128

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…Table 3 shows a comparison of Langmuir and Freundlich isotherm data, where the MG and RhB dye removal process is more inclined to the Langmuir isotherm as indicated by a correlation value close to 1. The Langmuir isotherm assumes that the adsorption process occurs in a monolayer (chemisorption) (Amri et al, 2023) . The maximum capacity of the MG and RhB dye removal process is listed in Table 3.…”

Section: Adsorption Isotherm and Thermodynamic Modelsmentioning

confidence: 99%

Activated Hydrochar Prepared from Longan Fruit (Dimocarpus longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal

Palapa

Wijaya

Ahmad

et al. 2023

Sci. Technol. Indones

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Hydrothermal carbonization is recognized as a method of processing biomass into carbon-rich products due to its energy-saving and environmental-friendly advantages. In this study, two types of hydrochar were prepared from Longan Fruit (Dimocarpus longan Lour.) Peel via hydrothermal carbonization at temperatures of 190°C and 250°C and activated using NaOH (HC-ACT 190 and HC-ACT 250) for removal of malachite green (MG) and rhodamine B (RhB) dyes. The maximum capacity for MG dye removal using HC-ACT 190 and HC-ACT 250 materials was 172.414 mg/g and 250 mg/g, while for RhB dye was 111.111 mg/g and 151.515 mg/g, respectively. The optimum pH was obtained at pH 6 for MG and pH 3 for RhB with adsorption equilibrium time occurring at 90 minutes. The kinetic study shows that the adsorption process follows pseudo-second-order kinetics, while the isotherm model was determined by the Langmuir isotherm model. Materials can be reused effectively for at least 3 cycles with an adsorption percentage of MG dye removal using HC-ACT 190 and HC-ACT 250 materials was 69.91% and 83.15% respectively, while for RhB dye was 35.79% and 55.6% respectively. The material is more selective on MG dye compared to RhB dye based on the selectivity test on the adsorption of the dye mixture.

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Section: Adsorption Isotherm and Thermodynamic Modelsmentioning

confidence: 99%

Activated Hydrochar Prepared from Longan Fruit (Dimocarpus longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal

Palapa

Wijaya

Ahmad

et al. 2023

Sci. Technol. Indones

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“…This enables LDH to incorporate organic and inorganic groups with different properties through anion exchange, thus enhancing its selectivity towards specific dyes (Dai et al, 2023). LDH can be modified with organic materials such as graphene oxide (Amri et al, 2023;Amri et al, 2024), magnetic biochar (Zahara et al, 2023), hydrochar from rambutan peels (Normah et al, 2021) and activated carbon (Ahmad et al, 2023a). In addition, LDH can also be modified with inorganic compounds such as zinc oxide (Mohadi et al, 2023), titanium oxide (Ahmad et al, 2022), graphite (Siregar et al, 2021) and polyoxometalate (Hanifah et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…LDH can be modified with organic materials such as graphene oxide (Amri et al, 2023;Amri et al, 2024), magnetic biochar (Zahara et al, 2023), hydrochar from rambutan peels (Normah et al, 2021) and activated carbon (Ahmad et al, 2023a). In addition, LDH can also be modified with inorganic compounds such as zinc oxide (Mohadi et al, 2023), titanium oxide (Ahmad et al, 2022), graphite (Siregar et al, 2021) and polyoxometalate (Hanifah et al, 2023). Organic materials often contain specific functional groups that can selectively interact with certain dyes through hydrogen bonding, electrostatic inter-actions, or 𝜙-𝜙 interactions.…”

Section: Introductionmentioning

confidence: 99%

Selective Adsorption of Cationic and Anionic Dyes using Ni/Al Layered DoubleHydroxide Modified withEucheuma cottonii

Wibiyan,

Royani,

Lesbani

2024

IJMR

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This study investigates the selective adsorption capabilities of Ni/Al Layered Double Hydroxide (LDH) modified withEucheumacottoniifor the removal of cationic and anionic dyes from aqueous solutions. The primary objective was to evaluate the efficiencyand selectivity of these modified adsorbents towards different dyes, including rhodamine-b, malachite green, methylene blue(cationic dyes), and direct yellow, methyl orange, direct green (anionic dyes). The modification process aimed to enhancethe adsorption properties of LDHs, leveraging the natural adsorption capabilities ofEucheuma cottonii. Experimental resultsdemonstrated significant differences in adsorption percentages among the tested dyes, with malachite green showing thehighest adsorption efficiency among cationic dyes, indicating a strong affinity of the modified adsorbents towards cationic dyes.However, the ability to also adsorb anionic dyes suggests the dual-functionality of the modified LDHs, making them versatileagents for dye removal in water treatment applications.

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“…There are many ways to remove MG pollutants including coagulation, ion exchange, filtration, photocatalyst, and adsorption methods (Liu et al, 2022;Modwi et al, 2023;Palapa et al, 2021;Sabit and Ebrahim, 2023). Among the above methods, adsorption is the most widely used method due to its high removal rate, low cost, and easy work (Mohadi et al, 2023;You et al, 2022). Many adsorbents have been used in the MG adsorption process including using graphite carbon-based materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Graphene Oxide using Hummers Method as Adsorbent of Malachite Green Dye

Amri

Hanifah

2023

IJMR

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Graphene oxide materials were successfully synthesized using the Hummer method with XRD, FTIR, and BET characterization results. Graphene oxide material was used as malachite green dye adsorbent. The surface area of graphene oxide material and the maximum adsorption capacity were 157.360 m2/g and 106.383 mg/g. The selectivity process of graphene oxide material to the three dyes showed the most effective malachite green dye. The optimum pH of adsorption was obtained at pH 4. The optimum time of adsorption occurred at 120 minutes and the kinetics model followed PSO. The isotherm data followed Langmuir isotherm and the adsorption process was endoetrmic and spontaneous. The regeneration results showed the ability up to five cycles with a decrease of 40.019% from 96.698% to 56.679%.

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Adsorption of Phenol from Aqueous Solution Using Zn/Al Layered Double Hydroxides-Cellulose Composite

Cited by 5 publications

References 20 publications

Activated Hydrochar Prepared from Longan Fruit (Dimocarpus longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal

Activated Hydrochar Prepared from Longan Fruit (Dimocarpus longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal

Selective Adsorption of Cationic and Anionic Dyes using Ni/Al Layered DoubleHydroxide Modified withEucheuma cottonii

Synthesis of Graphene Oxide using Hummers Method as Adsorbent of Malachite Green Dye

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