Efficient removal of crystal violet dye from aqueous solutions using sodium hydroxide modified avocado shells: kinetics and isotherms modeling

Abstract The main objective of this study is to optimize a new composite for the depollution of contaminated water. The sodium hydroxide-modified Avocado shells (NaOH-AS) were firstly prepared, characterized by field-emission-scanning-electron-microscopy (FE-SEM), X-ray energy dispersive spectroscopy (EDS) and Fourier transforms infrared (FT-IR) spectroscopy, and applied for efficient removal of Crystal violet dye (CV) in wastewater. In addition, the adsorption in a batch system of CV dye on the NaOH-AS material was studied. Therefore, we accomplished a parametric study of the adsorption by studying the effect of several important parameters on the decolorizing power of the used material, namely, initial pH, contact time, initial CV dye concentration, temperature, and the ionic strength effect on the CV dye adsorption process were systematically assessed. The highest adsorption efficiency of CV dye (>96.9%) by NaOH-AS was obtained at pH >8. The pseudo-second-order kinetic model gave the best description of the adsorption kinetic of CV dye on the AS and NaOH-AS adsorbents. Besides, the mass transfer of CV dye molecules from the solution to the adsorbent surface occurred in three sequential stages (boundary layer diffusion, intraparticle diffusion and adsorption equilibrium). The adsorption isotherm data were best fitted with the Freundlich model. The adsorption capacity of AS increased from 135.88 to 179.80 mg g−1 after treatment by 1 M NaOH. The thermodynamic study showed that CV dye adsorption onto NaOH-AS was an exothermic and feasible process. The electrostatic interactions acted as the only forces governing the CV adsorption mechanism. The NaOH-AS demonstrated a satisfactory reusability. Therefore, we can state that the as-developed NaOH-AS material has a potential application prospect as an efficient adsorbent for CV dye from wastewaters.

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Enhancement of crystal violet dye adsorption on Artocarpus camansi peel through sodium hydroxide treatment

10.5004/dwt.2017.0326 ◽

2017 ◽

Vol 58 ◽

pp. 320-331 ◽

Cited By ~ 9

Author(s):

Hei Ing Chieng ◽

Linda B. L. Lim ◽

Namal Priyantha

Keyword(s):

Sodium Hydroxide ◽

Crystal Violet ◽

Dye Adsorption ◽

Crystal Violet Dye ◽

Sodium Hydroxide Treatment

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Synthesis and characterization of arginine-doped heliotrope leaves with high clean-up capacity for crystal violet dye from aqueous media

Water Science & Technology ◽

10.2166/wst.2021.446 ◽

2021 ◽

Author(s):

Lahoucine Brini ◽

Abdelghani Hsini ◽

Yassine Naciri ◽

Asmae Bouziani ◽

Zeeshan Ajmal ◽

...

Keyword(s):

Crystal Violet ◽

Contact Time ◽

Fourier Transforms ◽

Low Cost ◽

Aqueous Media ◽

Dye Adsorption ◽

Batch Process ◽

Scanning Calorimetry ◽

Crystal Violet Dye ◽

Ft Ir

Abstract Novel an arginine-modified Heliotrope leaf (Arg@HL) was used as adsorbent for the crystal violet (CV) dye adsorption in a batch process. The physicochemical and morphological composition of Arg@HL were characterized by field-emission-scanning-electron-microscopy (FE-SEM), Fourier transforms infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC). The experiments were carried out to investigate the factors that influence the dye uptake by the adsorbent, such as the contact time under agitation, adsorbent amount, initial dye concentration, temperature and pH of dye solution. The optimum conditions of adsorption were found on the batch scale as followed: CV concentration of 20 mg·L−1, an amount of 0.75 g·L−1 of the adsorbent, 90 min contact time, 6 pH and 25 °C temperature for Arg@HL. The results confirmed a second-order model explaining the dye crystal violet's adsorption's kinetics by Arg-Heliotrope leaves. The Langmuir model effectively defines the adsorption isotherms. The results revealed that the Arg@HL has the potential to be used as a low-cost adsorbent for the removal of CV dye from aqueous solutions.

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Efficient removal of crystal violet dye from aqueous solutions by vitreous tuff mineral

Environmental Technology ◽

10.1080/09593330.2013.871352 ◽

2014 ◽

Vol 35 (12) ◽

pp. 1508-1519 ◽

Cited By ~ 20

Author(s):

A. Blanco-Flores ◽

A. Colín-Cruz ◽

E. Gutiérrez-Segura ◽

V. Sánchez-Mendieta ◽

D.A. Solís-Casados ◽

...

Keyword(s):

Aqueous Solutions ◽

Crystal Violet ◽

Efficient Removal ◽

Crystal Violet Dye

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Fabrication and characterization of sugarcane bagasse–calcium carbonate composite for the efficient removal of crystal violet dye from wastewater

Ceramics International ◽

10.1016/j.ceramint.2020.07.237 ◽

2020 ◽

Vol 46 (17) ◽

pp. 27484-27492 ◽

Cited By ~ 1

Author(s):

Rui-Feng Wang ◽

Li-Gao Deng ◽

Kai Li ◽

Xue-Jing Fan ◽

Wen Li ◽

...

Keyword(s):

Calcium Carbonate ◽

Sugarcane Bagasse ◽

Crystal Violet ◽

Efficient Removal ◽

Crystal Violet Dye ◽

Fabrication And Characterization

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Kinetic, isotherm and thermodynamic studies of the adsorption of crystal violet by activated carbon from peanut shells

Water Science & Technology ◽

10.2166/wst.2012.605 ◽

2013 ◽

Vol 67 (4) ◽

pp. 737-744 ◽

Cited By ~ 21

Author(s):

J. X. Zhang ◽

L. L. Ou

Keyword(s):

Activated Carbon ◽

Crystal Violet ◽

Correlation Coefficients ◽

Second Order ◽

Order Kinetic ◽

Adsorption Capacities ◽

Crystal Violet Dye ◽

Peanut Shells ◽

Pseudo Second Order ◽

Good Agreement

The adsorption of crystal violet dye from aqueous solutions onto an activated carbon prepared from peanut shells was analyzed in this study. The effects of particle size, initial concentration, time and temperature on crystal violet removal were studied in batch experiments. Experimental results showed that the adsorption equilibrium was achieved within 100 min for all studied concentrations. Analysis of adsorption results showed that the adsorption isotherms could be well fitted to the Langmuir model. Kinetic parameters, rate constants, equilibrium adsorption capacities and related correlation coefficients for pseudo first-order and second-order kinetic models were calculated and discussed. The results revealed that the adsorption kinetics was in good agreement with the pseudo second-order equation. Thermodynamic parameters such as the change of Gibbs free energy (ΔG°), change of enthalpy (ΔH°) and change of entropy (ΔS°) have also been determined and it has been found that the adsorption process should be spontaneous, endothermic and physisorption in nature.

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An efficient removal of crystal violet dye from waste water by adsorption onto TLAC/Chitosan composite: A novel low cost adsorbent

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2016.11.077 ◽

2017 ◽

Vol 96 ◽

pp. 324-333 ◽

Cited By ~ 108

Author(s):

H. Jayasantha Kumari ◽

P. Krishnamoorthy ◽

T.K. Arumugam ◽

S. Radhakrishnan ◽

D. Vasudevan

Keyword(s):

Waste Water ◽

Crystal Violet ◽

Low Cost ◽

Efficient Removal ◽

Crystal Violet Dye ◽

Chitosan Composite

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Adsorptive Studies for the Removal of Crystal Violet Dye from Aqueous Solution by Using Cicca Acida L. Stem - Activated Carbon

Current World Environment ◽

10.12944/cwe.16.2.10 ◽

2021 ◽

Vol 16 (2) ◽

pp. 436-443

Author(s):

Sharmila Ramasamy ◽

Anbarasu Kaliyaperumal ◽

Thamilarasu Pommanaickar

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Kinetic Model ◽

Crystal Violet ◽

Order Kinetic ◽

Human Beings ◽

Crystal Violet Dye ◽

Before And After ◽

Order Kinetic Model ◽

Pseudo Second Order

Textile industries discharge wastewater containing various dyes including Crystal Violet dye. These dyes are very harmful for human beings, animals and plants. Therefore, the attempt is made for adsorption framework on elimination of crystal violet dye by using Cicca acida L. stem-activated carbon from aqueous solution carried out under various experimental methods and optimization conditions. Adsorption data modeled with Freundlich, Langmuir and Tempkin adsorption isotherms. Thermodynamic factors like as âˆ†Ho, âˆ†So and âˆ†Go were calculated, which indicated that the adsorption was spontaneous and endothermic nature. Based on kinetic study, pseudo-second order kinetic model was fit compared to the pseudo-first order kinetic model. The adsorbent has been characterized by SEM before and after adsorption of crystal violet dye solution.

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A Study of The Equilibrium, Kinetics, and Thermodynamics of Malachite Green Dye Adsorption Onto Lignin

10.21203/rs.3.rs-1009760/v1 ◽

2021 ◽

Author(s):

Vani Gandham ◽

UMA Addepally ◽

Bala Narsaiah T

Keyword(s):

Malachite Green ◽

Group Analysis ◽

Dye Adsorption ◽

Second Order ◽

Isotherm Models ◽

Maximum Adsorption Capacity ◽

Order Kinetic ◽

Adequate Treatment ◽

Pseudo Second Order ◽

Kinetics And Isotherms

Abstract Malachite Green (MG), a cationic synthetic dye is considered hazardous when discharged into the water bodies without any adequate treatment. It can affect the multiple segments of the environment leading to irreversible persistent changes. So, there is a need for remediation with cost-effective method to remove dyes from effluents. Adsorption is one such technique to remove dyes from wastewater and is effective and economical. The present study describes the removal of MG cationic dye from wastewater using eco-friendly and biodegradable lignin extracted from hydrothermally treated rice straw by adsorption process. Functional group analysis and morphological characterisation was done to the extracted lignin after quantification. The maximum percent removal of MG 92 ± 0.2 % was observed from a series of batch experiments at optimum process parameters of: contact time 80 min, initial dye concentration 50 ppm, lignin dosage 0.25g, pH 7, temperature 300c and with 100 rpm agitation speed. The adsorption kinetics and isotherms were determined for the experimental data using four kinetic models (pseudo-first-order, second order, pseudo-second-order and intra-particle diffusion model) and two isotherm models (Langmuir and Freundlich). The results suggested that the kinetics data fit to the pseudo-second-order kinetic model with the maximum adsorption capacity 36.7 mg/g and the two isotherm models were applicable for the adsorption of MG onto the lignin. Additionally, the thermodynamic parameters ΔSo, ΔHo and ΔGo were evaluated. Therefore, lignin which is an environmental friendly and low cost carbon material that can be used as an adsorbent for dye removal.

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Crystal Violet Dye Adsorption from Aqueous Solution using Activated Chickpea Husk (Cicer arientum)

Asian Journal of Chemistry ◽

10.14233/ajchem.2022.23444 ◽

2021 ◽

Vol 34 (1) ◽

pp. 104-110

Author(s):

Sonia Rani ◽

Sudesh Chaudhary

Keyword(s):

Crystal Violet ◽

Adsorption Mechanism ◽

Dye Adsorption ◽

Second Order ◽

Order Model ◽

Batch Mode ◽

After Effects ◽

Crystal Violet Dye ◽

Pseudo Second Order ◽

Second Order Model

The chickpea husk (Cicer arientum) were activated by chemical modification with sulphuric acid, for its application as biosorbent for the remediation of crystal violet dye from wastewater. Activated chickpea husk (ACH) was characterized for its chemical structure and morphology using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The after effects of leading affecting parameters like dose of adsorbent, time of contact, pH and concentration were studied by commencing experiments in batch mode. Adsorption mechanism and sorption efficiency of ACH was examined using variety of isotherms (Langmuir & Freundlich) and kinetic models (pseudo first order and pseudo second order). Experimental data for adsorption rate was in good harmony with the results obtained using pseudo second order model. The adsorption capacity determined using Langmuir isotherm and pseudo second order model was found to be 142.85 mg/g.

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