Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon

Aljeboree, Aseel M.; Alkaim, Ayad F.; Al-Dujaili, Ammar H.

doi:10.1080/19443994.2013.877854

Cited by 77 publications

(33 citation statements)

References 59 publications

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“…Crystal violet (CV) is a hexamethyl pararosaniline chloride dye that is generally used in dyeing/textile, leather, and paper industries . If inhaled, CV causes vomiting, diarrhea, headache, dizziness, irritation of the respiratory tract .…”

Section: Resultsmentioning

confidence: 99%

“…[37] 3.1 | Photocatalytic dye degradation studies Crystal violet (CV) is a hexamethyl pararosaniline chloride dye that is generally used in dyeing/textile, leather, and paper industries. [38] If inhaled, CV causes vomiting, diarrhea, headache, dizziness, irritation of the respiratory tract. [39,40] Several traditional methods were used for wastewater treatment have some limitations (i) expensive (ii) produce a large quantity of sludge and toxic chemicals (iii) generating secondary pollution and (iv) and inefficiency.…”

Section: Resultsmentioning

confidence: 99%

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Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Devarayapalli

Vattikuti

Sreekanth

et al. 2020

Applied Organom Chemis

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Herein, cobalt (Co)‐based metal–organic zeolitic imidazole frameworks (ZIF‐67) coupled with g‐C3N4 nanosheets synthesized via a simple microwave irradiation method. SEM, TEM and HR‐TEM results showed that ZIF‐67 were uniformly dispersed on g‐C3N4 surfaces and had a rhombic dodecahedron shape. The photocatalytic properties of g‐C3N4/ZIF‐67 nanocomposite were evaluated by photocatalytic dye degradation of crystal violet (CV), 4‐chlorophenol (4‐CP) and photocatalytic hydrogen (H2) production. In presence of visible light illumination, the photocatalytic dye results showed that 95% CV degradation and 53% 4‐CP degradation within 80 min. The H2 production of the g‐C3N4/ZIF‐67 composite was 2084 μmol g−1, which is 3.84 folds greater than that of bare g‐C3N4 (541 μmol g−1).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Devarayapalli

Vattikuti

Sreekanth

et al. 2020

Applied Organom Chemis

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“…The dissolved GRL dye is positively charged in water solution, and then the removal of this dye takes place when the adsorbents present a negative surface charge. Basic condition increases the electrostatic attraction between cationic dye and partially negative charged MWCNTs surface; therefore, the increase of the pH value (basic condition) the number of negatively charged sites increases and the number of positively charged sites decreases [33], While lower adsorption of GRL by surfaces adsorbents at low pH values may be explained by the competition of excess H + ions with the dye cation for active adsorption sites [31]. The adsorption mechanism of the GRL on MWCNTs can be illustrated in Scheme 1.…”

Section: -2 Effect Of Phmentioning

confidence: 97%

“…6). The increase in the percentage of maxilon blue dye removed from the aqueous solution is primarily due to the greater number of active sites available for adsorption as a result of the increased amount of MWCNTs present [31].…”

Section: -1 Effect Of Adsorbent Dosagementioning

confidence: 99%

Preparation, structure and adsorption properties of synthesized multiwall carbon nanotubes for highly effective removal of maxilon blue dye

Alkaim

Sadik

Mahdi

et al. 2015

Korean J. Chem. Eng.

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Multiwall carbon nanotubes (MWCNTs) have been hydrothermally prepared using polyethylene glycol as the carbon source. Herein, new MWCNTs composites with high adsorption capacity were prepared and applied as efficient adsorbents for adsorption of maxilon blue dye (GRL) from aqueous solution. The morphologies of the MWCNTs were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform-infrared (FT-IR) spectroscopy. The adsorption property of maxilon blue (GRL) from aqueous solution onto MWCNTs was studied as a function of mass dosage, pH of solution, initial dye concentration and temperature. The adsorption of GRL depends on the initial pH of the solution with maximum uptake occurring at about pH 10. The maximum adsorption capacity of prepared MWCNTs was 260.7 mg/g. Langmuir, Freundlich and Temkin isotherms were applied to fit the experimental data. The Freundlich equilibrium isotherm fitted well the experimental data indicating the homogeneity of the adsorbent surface sites. Thermodynamics parameters were studied the changes in free energy (ΔG 0 ), enthalpy (ΔH 0 ) and entropy (ΔS 0 ) during adsorption. It is noticeable that the adsorption of GRL dye onto MWCNTs was a spontaneous and endothermic process and indicates that the adsorption is favored at high temperature.

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“…CV is used as histological stain, particularly in Gram's method for classifying bacteria [21,22]. Due to its usage in different industrial applications, various adsorbents have been used to remove CV from aqueous solutions [21,22,[25][26][27][28][29][30][31][32][33][34].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Avocado seed powder: characterization and its application for crystal violet dye removal from aqueous solutions

Bazzo

Adebayo

Dias

et al. 2015

Desalination and Water Treatment

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2015): Avocado seed powder: characterization and its application for crystal violet dye removal from aqueous solutions, Desalination and Water Treatment,This study presents removal of crystal violet (CV) dye from aqueous solutions using solid food waste, avocado kernel seed powder (ASP). ASP was used in the native form for biosorption study. The effects of different experimental conditions such as pH of the solution, initial dye concentration, contact time, and temperature were investigated using batch study. Maximum removal of CV (95.9 mg g −1 ) by ASP (100 mg) was observed at pH 7 and 55˚C. The kinetics data were evaluated using pseudo-first-order, pseudo-second-order, and general-order kinetic adsorption models. The general-order kinetic adsorption model gave the best description of the biosorption kinetic of CV onto ASP biosorbent. Similarly, the intraparticle diffusion plots showed three linear portions during biosorption process. Freundlich, Langmuir, and Liu models were used to analyze the isothermal data; Liu equilibrium model gave the best fit of the isothermal data of CV biosorption onto ASP. The calculations from thermodynamic studies showed that CV biosorption onto ASP was an exothermic process and a feasible process. The combined data showed that avocado seed powder could be efficiently utilized for the treatment of dyes-rich wastewaters.

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Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon

Cited by 77 publications

References 59 publications

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Preparation, structure and adsorption properties of synthesized multiwall carbon nanotubes for highly effective removal of maxilon blue dye

Avocado seed powder: characterization and its application for crystal violet dye removal from aqueous solutions

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Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon

Cited by 77 publications

References 59 publications

Hydrogen production and photocatalytic activity of g‐C3N4/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C3N4/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Preparation, structure and adsorption properties of synthesized multiwall carbon nanotubes for highly effective removal of maxilon blue dye

Avocado seed powder: characterization and its application for crystal violet dye removal from aqueous solutions

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Product

Resources

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Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation