Adsorptive Removal of a Reactive Azo Dye Using Polyaniline-Intercalated Bentonite

Tie, Jingxi; Fang, Xiaohong; Wang, Xiaolei; Zhang, Yao; Gu, Tian; Deng, Shujun; Li, Guoting; Tang, Dengyong

doi:10.15244/pjoes/67554

Cited by 15 publications

(8 citation statements)

References 50 publications

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“…Therefore, the natural Bent should be modified with organics by the chemical reaction of hydroxyl groups of Bent, or by the direct exchange of organic cations into the interlayer of the natural Bent. Polyaniline-intercalated Bent has been proven to be an efficient adsorbent for Reactive Red 2 [ 37 ]. Its adsorption amount could reach 257.7 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Guo

Umar

et al. 2020

Nanomaterials

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Poly(2-(dimethylamino)ethyl methacrylate)-grafted bentonite, marked as Bent-PDMAEMA, was designed and prepared by a surface-initiated atom transfer radical polymerization method for the first time in this study. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) were applied to characterize the structure of Bent-PDMAEMA, which resulted in the successful synthesis of Bent-PDMAEMA. As a cationic adsorbent, the designed Bent-PDMAEMA was used to remove dye Orange I from wastewater. The adsorption property of Bent-PDMAEMA for Orange I dye was investigated under different experimental conditions, such as solution pH, initial dye concentration, contact time and temperature. Under the optimum conditions, the adsorption amount of Bent-PDMAEMA for Orange I dye could reach 700 mg·g−1, indicating the potential application of Bent-PDMAEMA for anionic dyes in the treatment of wastewater. Moreover, the experimental data fitted well with the Langmuir model. The adsorption process obeyed pseudo-second-order kinetic process mechanism.

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Section: Introductionmentioning

confidence: 99%

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Guo

Umar

et al. 2020

Nanomaterials

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“…The Temkin's model was advanced on chemisorption notion and presumes that adsorbate molecule's adsorption heat reduces linearly with adsorbent layer coverage owing to adsorbent-adsorbate interplay; likewise, it adopts a binding energy uniform allocation (Tie et al, 2017). The Tempkin isotherm equation is shown in equation 6: qe = Bln KT + Bln Ce 6 (Tie et al, 2017) B= (RT/b) 6a…”

Section: Adsorption Mechanisms and Isothermsmentioning

confidence: 99%

“…B is heat of adsoption (B = RT/bT); bT (J/mol), is constant of Temkin isotherm; KT (L/g), is equilibrium binding constant as well as associated to the all-out binding energy (Tie et al, 2017, Ghasemi et al, 2018, Bankole et al, 2019. When heat of adsorption is less than 40kJ/mol, it indicates physical adsorption or physiosorption (Saini et al, 2021).…”

Section: Adsorption Mechanisms and Isothermsmentioning

confidence: 99%

Adsorptive Evaluation of Activated Carbonized Avocado Pear Seed (Persea Americana) and Activated Carbonized orange peels (Citrus Sinensis) in Taking out Ni2+ ion in Contaminated Water

Moses¹,

Nwulu²

2023

dujopas

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Grave and complicated pollution problems are posed by the existence of heavy metals trendy environment and this has been a focus of study all over the world. The Activated carbonized avocado pear seed (ACAPS) and activated carbonized orange peel (ACOP) were each soaked with potassium hydroxide (KOH) solution at a 1:1 ratio, for 48 hours, the outcome was washed, air-dried and separately oven dried at 105℃ for 6 hours and further heated in a muffle furnace (Carbolite AAF1100) at 2500C for 1 hour. The ACAPS and ACOP obtained were physicochemical characterized with scanning electron microscope (SEM) and Fourier-transform infrared (FT-IR) spectrophotometer. Ni2+ ions adsorption route on ACAPS as well as ACOP was considered by means of batch adsorption isotherm investigation. Adsorption forms was assessed by Freundlich, Langmuir, DRK, Tempkin as well as Flory-Huggin isotherm models. SEM picture, show that ACAPS posessed an enormous amount of different dimension pores and the ACOP had smaller amount of pores of smaller sizes. The R2 obtained varies from 0.92 to 1.00 and it points to the fact that all the isotherm simulation was competent to clarify the correlation in the data we got. ACAPS had more adsorption site, however, ACOP took up more Ni2+ ion per adsorption site on comparing Flory-Huggins isotherm model nFH values vis-a-vis Langmuir isotherm model qm values. In conclusion, ACAPS was a superior adsorbent when matched with ACOP, it was more than twice as effective for taking out Ni2+ ions from contaminated water owing to a blend of its enormous amount of different size openings and the functional groups on its surface, with a qm value of 18.18 and 8.70 mg/g in that order.

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“…The Temkin isotherm model was based on chemisorptions notion as well as adopts that the adsorption heat of adsorbate molecules reduces linearly by means of adsorbent layer coverage owing to adsorbent-adsorbate exchanges, it similarly adopts a uniform binding energies allocation (Tie et al, 2017). The Temkin isotherm equation is shown in equation 6: q e = Bln K T + Bln C e (6) B= (RT/b T ) (6a) (Tie et al, 2017) B is heat of adsoption (B = RT/b T ); b T (J/mol), is the Temkin isotherm constant; K T (L/g), is equilibrium binding constant as well as linked to all-out binding energy (Tie et al, 2017, Ghasemi et al, 2018, Bankole et al, 2019.…”

Section: Mechanism and Isotherm Of Adsorptionmentioning

confidence: 99%

Correlation of Activated Carbonized Avocado Pear Seeds (Persea Americana) and Activated Carbonized Orange Peels (Citrus Sinensis) Adsorptive Potency in Eliminating Cd2+ Ions in contaminated water

Moses¹,

Archibong²

2022

dujopas

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Water contamination is a very serious problem due to the role and usefulness of water to life. The carbonized orange peels (COP) and carbonized Avocado Pear seeds (CAPS) were impregnated with Potassium hydroxide (KOH) at 1:1 ratio for 48 hours. The KOH impregnated CAPS and COP were washed, air-dried and separately oven dried at 105℃ for 6 hours in a muffle furnace (Carbolite AAF1100) at 250oC for 1 hour. The activated carbonized avocado pear seeds (ACAPS) and activated carbonized orange peels (ACOP) were physicochemically characterized using scanning electron microscope (SEM) and Fourier-transform infrared (FTIR) spectrophotometer. Cd2+ ions adsorption technique on ACAPS and ACOP was examined by means of the batch adsorption isotherm experimentations and their adsorption model was appraised by means of isotherm models of Langmuir, Freundlich, Dubinin–Radushkevich, Tempkin and Flory-Huggin. The SEM imageries, showed that ACAPS posessed a large number of varied size pores whereas the ACOP had fewer smaller size pores. The R2 values which varied from 0.86 to 1.00 point to the fact that all the isotherm models were capable to clarify the correlation in the obtained data. ACAPS had more adsorption site, however, ACOP took up more Cd2+ ion per adsorption site on comparing Flory-huggins isotherm model nFH values vis-a-vis Langmuir isotherm model qm values. Generally, ACAPS was a superior adsorbent likened to ACOP, it was more than twice as effective for deletion of Cd2+ ions in contaminated water owing to a blend of considerable amount of various size openings and surface functional groups with qm values of 12.35 and 5.67mg/g in that order.

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Adsorptive Removal of a Reactive Azo Dye Using Polyaniline-Intercalated Bentonite

Cited by 15 publications

References 50 publications

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Adsorptive Evaluation of Activated Carbonized Avocado Pear Seed (Persea Americana) and Activated Carbonized orange peels (Citrus Sinensis) in Taking out Ni2+ ion in Contaminated Water

Correlation of Activated Carbonized Avocado Pear Seeds (Persea Americana) and Activated Carbonized Orange Peels (Citrus Sinensis) Adsorptive Potency in Eliminating Cd2+ Ions in contaminated water

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