The Removal of Acid Violet 90 from Aqueous Solutions Using PANI and PANI/Clinoptilolite Composites: Isotherm and Kinetics

Aktı, Filiz; Okur, Müjgan

doi:10.1007/s10924-018-1297-1

Cited by 30 publications

(6 citation statements)

References 49 publications

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“…Langmuir and Freundlich isotherm models were used to determine the adsorption mechanism. The linearized form of the Langmuir equation is given by the following equation [4]:…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…where, Ce (mg/L) is the equilibrium dye concentration, qe (mg/g) is the adsorption capacity at equilibrium, qmax (mg/g) is the The Freundlich isotherm model equation is [4]:…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…While the percentage of dye removal decreased with an increase in the initial dye concentration, the adsorption capacities increased (Figure 8). where, Ce (mg/L) is the equilibrium dye concentration, qe (mg/g) is the adsorption capacity at equilibrium, qmax (mg/g) is the The Freundlich isotherm model equation is [4]:…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…Using activated carbon as adsorbent for dyes has been widely studied due to their large surface area and high adsorption capacity. However, due to its high cost and the difficulty of regeneration, cheaper, more effective adsorbent such as zeolites, clays, fly ash, natural and biological materials, chitin, and chitosan are being considered as alternative low cost adsorbents [2][3][4][5][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Synthetic dyes are toxic, carcinogenic and mutagenic and also discharging of dyes into natural streams without untreated causes a severe environmental problem. This problem results in adverse effects on human and animal health and therefore the removal of dyes from wastewater is important [1][2][3][4][5]. A variety of treatment methods are used such as physical, chemical and biological process to removal of dyes from wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

Aktı

2020

Sakarya University Journal of Science

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Calcined eggshell (CES) was modified with Pluronic 123 (P123), Pluronic 127 (F127) and polyethylene glycol (PEG) agents and used in adsorption of Remazol Yellow. The adsorbents were characterized by Fourier transform infrared (FTIR) and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX). FTIR spectrums showed that characteristic peaks corresponding to CES and modifier agents were observed and CES was successfully modified. Modification of CES with PEG having high chain length (or high molecular weight) positively affected particle size. From EDX analysis was determined the carbon content increased from 21.44 % to 36.60 % whereas the calcium content decreased from 21.23 % to 8.69 % with increasing of the molecular weight of modifier agents. Removal percent of Remazol Yellow was found as 68.55, 91.79, 93.09 and 95.69 for CES, CES-P123, CES-F127 and CES-PEG, respectively. CES-PEG adsorbed Remazol Yellow more than other adsorbents and also dye adsorption on it fitted to Freundlich isotherm model. Dye adsorption capacity of CES-PEG was obtained as 133.3 mg/g. Particle size and carbon content of adsorbents was more effective in adsorption of Remazol Yellow.

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“…Langmuir and Freundlich isotherm models were used to determine the adsorption mechanism. The linearized form of the Langmuir equation is given by the following equation [4]:…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…where, Ce (mg/L) is the equilibrium dye concentration, qe (mg/g) is the adsorption capacity at equilibrium, qmax (mg/g) is the The Freundlich isotherm model equation is [4]:…”

Section: Adsorption Studiesmentioning

confidence: 99%

Section: Adsorption Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

Aktı

2020

Sakarya University Journal of Science

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Synthesis of new sustainable polyester‐type hydrogels from chemical recycled poly(ethylene terephthalate) products applied on the removal of indigo carmine dye

Schneider,

Simioni,

Petzhold

et al. 2024

J of Applied Polymer Sci

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Large amounts of plastic waste are daily generated, becoming a global issue that needs to be addressed. Thus, new recycling alternatives have been explored, such as the depolymerization of poly(ethylene terephthalate) waste (wPET). These reactions can lead to the formation of oligomers and monomers, which can then be employed in new synthetic processes. The aim of this work is to use the products of the chemical recycling of wPET on the synthesis of hydrogels and evaluate the capacity of these materials to adsorb dyes aiming a wastewater treatment. The depolymerizations were done through glycerolysis reactions catalyzed by zinc (II) acetate under microwave radiation. Afterwards, the obtained oil was crosslinked with citric acid (CA) under tin (II) chloride catalysis to obtain the hydrogels. The water uptake capacity of the hydrogels ranged from 310% to 1442%, depending on the CA content. When placed in an indigo carmine solution, the hydrogels showed high adsorption capacity, removing up to 97% of the dye. The kinetic study revealed a physicochemical mechanism for the removal process, corroborated by Temkin isotherms. These results indicate that the chemical recycling of PET via glycerolysis is a viable alternative for producing hydrogels, reducing plastic waste while creating new tools for wastewater treatment.

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Chitosan/Polyaniline Conductive Blends for Developing Packaging: Electrical, Morphological, Structural and Thermal Properties

et al. 2019

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The Removal of Acid Violet 90 from Aqueous Solutions Using PANI and PANI/Clinoptilolite Composites: Isotherm and Kinetics

Cited by 30 publications

References 49 publications

Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

Effect of Modifier Agents on Particle Size and Surface Functional Groups of Calcined Eggshell: Test in Adsorption of Remazol Yellow

Synthesis of new sustainable polyester‐type hydrogels from chemical recycled poly(ethylene terephthalate) products applied on the removal of indigo carmine dye

Chitosan/Polyaniline Conductive Blends for Developing Packaging: Electrical, Morphological, Structural and Thermal Properties

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