Sorption of crystal violet from aqueous solution using live roots of Eichhornia crassipes: Kinetic, isotherm, phyto and cyto-genotoxicity studies

Patil, Sneha R.; Sutar, Shubham; Jadhav, Jyoti P.

doi:10.1016/j.eti.2020.100648

Cited by 26 publications

(14 citation statements)

References 55 publications

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“…The R L values at different temperatures (25-45°C) were in the range (0.044-0.026), indicating favorable adsorption. The comparison of parameter condition and adsorption capacities of NAJL powder adsorbent for CV dye removal with different adsorbents such as NaOH-modified rice husk (NMRH) [53], grapefruit peel [60], Eichhornia crassipes live roots [67], jackfruit leaf powder (JLP) [68], banyan leaf powder [69], treated ginger waste (TGW) [70] are shown in Table 4. Based on the results of the Dubinin-Radushkevich isotherm model, the free energy value (E) was less than 8 kJ mol −1 which suggests that the CV adsorption on NAJL powder adsorbent is physisorption.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Effective adsorption of crystal violet from aqueous solutions with effective adsorbent: equilibrium, mechanism studies and modeling analysis

Al-Shehri¹,

Almudaifer

Alorabi

et al. 2021

Environmental Pollutants and Bioavailability

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In this work, NaOH-activated Aerva javanica leaf (NAJL) powder was successfully developed as a cost-effective adsorbent for removal of crystal violet (CV) from an aqueous environment. The prepared adsorbent was characterized using FTIR, SEM, and their surface area was determined by BET technique. Different parameters affecting the adsorption of CV dye such as pH solution, adsorbent dose, equilibrium time, initial CV concentration, and temperature were investigated. The results revealed that the best-optimized values were found as pH-9, dose-20 mg, time-30 min, temperature-25 °C . The adsorption experimental data exhibited excellently fitted well to the nonlinear Langmuir isotherm and Pseudo-first-order kinetic models. The maximum monolayer adsorption capacity of CV dye was 315.2 mg/g. The experimental parameters of thermodynamic analysis exhibited that the CV dye adsorption onto NAJL powder was exothermic and spontaneous. Electrostatic attraction, π-π interactions, and Hydrogen bonding were the mechanism behind the adsorption of CV dye.

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Section: Adsorption Isothermmentioning

confidence: 99%

Effective adsorption of crystal violet from aqueous solutions with effective adsorbent: equilibrium, mechanism studies and modeling analysis

Al-Shehri¹,

Almudaifer

Alorabi

et al. 2021

Environmental Pollutants and Bioavailability

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show abstract

“…Similar effects were mentioned for other adsorbents used to retain crystal violet: eggshells [ 4 ], Ananas comosus (pineapple) leaf powder [ 18 ], and corn stalk [ 23 ]. The increase of the adsorption capacity can be attributed to the fact that a high initial dye concentration leads to an increase of the concentration gradient between the dye solution and the adsorbent surface, leading to an increase of the driving force that favors the external mass transfer [ 4 , 11 , 18 , 51 , 52 ]. At the same time, the number of collisions between dye molecules and adsorbent particles material are favored, intensifying adsorption [ 53 ].…”

Section: Resultsmentioning

confidence: 99%

“…Adsorption isotherms are used to describe the interactions between adsorbate and adsorbent that take place in the process. The calculated parameters using these isotherms provide information about the properties and affinities of the adsorbent material surface as well as about the adsorption mechanism [ 1 , 11 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

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Bathurst Burr (Xanthium spinosum) Powder—A New Natural Effective Adsorbent for Crystal Violet Dye Removal from Synthetic Wastewaters

et al. 2021

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A new natural adsorbent material, Bathurst burr powder, was used to remove crystal violet dye from synthetic wastewaters. Particle size distribution and SEM and FTIR analyses were performed to characterize it. The effect of the operational adsorption process parameters (pH, ionic strength, initial dye concentration, adsorbent dose, contact time, temperature) onto the adsorption process was evaluated in a batch system. Equilibrium, kinetic, and thermodynamic studies were performed in order to understand the adsorption process. Taguchi method and ANOVA test were used to optimize the dye adsorption conditions and to establish the percentage contribution of each factor, respectively. The accuracy of the Taguchi prediction method was analyzed by correlating the predicted dye removal efficiency with the experimentally determined one. The particle size distribution analysis showed that 82.15% of the adsorbent particles have an average size below 0.5 mm. The adsorption process followed the Langmuir isotherm and pseudo-second order kinetic model. Maximum adsorption capacity value (164.10 mg·g−1) was higher compared to many similar adsorbents. The process was endothermic, spontaneous, and favorably involving a physisorption mechanism. The Taguchi method showed that the most influential controllable factor was pH (65% contribution in adsorption efficiency) and the data analysis indicates a very good accuracy of the experimental design (R2 = 0.994). The obtained results demonstrated that Bathurst burr powder can be used as a cheap and efficient adsorbent for crystal violet dye removal from aqueous solution.

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“…Patil et al [65] investigated the potential for biosorption of live roots of E. crassipes to remove the cationic dye crystal violet from aqueous solutions. The authors tested the isotherm models of Dubinin-Radushkevich, Temkin, Freundlich, and Langmuir to elucidate the mechanisms that act in the biosorption of the dye.…”

Section: Eichhornia Crassipes As Biosorbent Of Synthetic Dyesmentioning

confidence: 99%

Eichhornia crassipes (Mart.) Solms (natural or carbonized) as biosorbent to remove pollutants in water

Lima

Asencios

2021

SN Appl. Sci.

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The prolific aquatic herb Eichhornia crassipes considered a pest in many countries can cause damage such as obstruction of water flows and impair the locomotion of fishing boats. However, E. crassipes is renewable, inexpensive, and widely available in nature, and its ability to adsorb recalcitrant pollutants with mutagenic and carcinogenic properties, including synthetic dyes and heavy metals, has been extensively studied by the scientific community. This review paper analyzes previous reports concerning the use of E. crassipes (in the natural and carbonized form) as an adsorbent for heavy metal cations and textile dye. The adsorptive capacity of E. crassipes, the best conditions (adsorbent dosage, pH, and temperature) for the removal of these pollutants, the mechanism of adsorption, and the comparison between natural and carbonized forms (advantages and disadvantages) are discussed. All the results revised in this review indicated that the use of E. crassipes (and its carbon derived) as adsorbent is promising and is an excellent material to be applied in the water treatment. It could be used in the actual technologies for the treatment of contaminated water by heavy metals and textile dyes; however, more studies need to be made on scale-up, economy projects, and related issues, to be finally implemented in wastewater treatment plants.

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Sorption of crystal violet from aqueous solution using live roots of Eichhornia crassipes: Kinetic, isotherm, phyto and cyto-genotoxicity studies

Cited by 26 publications

References 55 publications

Effective adsorption of crystal violet from aqueous solutions with effective adsorbent: equilibrium, mechanism studies and modeling analysis

Effective adsorption of crystal violet from aqueous solutions with effective adsorbent: equilibrium, mechanism studies and modeling analysis

Bathurst Burr (Xanthium spinosum) Powder—A New Natural Effective Adsorbent for Crystal Violet Dye Removal from Synthetic Wastewaters

Eichhornia crassipes (Mart.) Solms (natural or carbonized) as biosorbent to remove pollutants in water

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