Adsorption of Crystal Violet onto an Agricultural Waste Residue: Kinetics, Isotherm, Thermodynamics, and Mechanism of Adsorption

Loulidi, Ilyasse; Boukhlifi, Fatima; Ouchabi, Mbarka; Amar, Abdelouahed; Jabri, Maria; Kali, Abderahim; Chraibi, S.; Hadey, Chaimaa; Aziz, Faissal

doi:10.1155/2020/5873521

Cited by 86 publications

(44 citation statements)

References 24 publications

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“…e mixture was then stirred for a well-determined contact time and after separation of the solid by centrifugation. e phenol remaining in the solution was analyzed with the UV/Visible Spectrophotometer (Shimadzu UV-1240) at a wavelength equal to 270 nm, and the amount of adsorbed phenol was calculated by the following equation [27]:…”

Section: Adsorption Testsmentioning

confidence: 99%

Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Amar

Loulidi

Kali

et al. 2021

Applied and Environmental Soil Science

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Phenol is one of the most toxic pollutants found in industrial waste. This work focuses on the removal of phenol using clay from the Sale region. Adsorbent was characterized by X-ray fluorescence spectroscopy, X-ray diffraction, infrared spectroscopy, and scanning electron microscopy. The chemical analysis of this clay shows that the percentage of silicon and aluminium is quite high, and the percentage of calcium and iron is relatively high, so this material is rich in muscovite, quartz, and calcite. In addition to the presence of titanium dioxide (TiO2), which can give it a property of degradation of organic compounds under ultraviolet light, the pHPZC zero point of our material is 7.4. The results showed that the adsorption of phenol was well fitted by the pseudo-second-order kinetic model and the Langmuir and Freundlich isotherms and that the best retention is obtained at a pH between 3 and 8.

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Section: Adsorption Testsmentioning

confidence: 99%

Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Amar

Loulidi

Kali

et al. 2021

Applied and Environmental Soil Science

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“…Due to slight differences between the coefficients of determination R 2 , in majority of cases it was difficult to unequivocally determine the sorption mechanism, which was discussed in detail in the paper by Dąbek et al [ 36 ]. While analyzing the literature data, it was stated that most authors, in relation to the sorption of dyes onto activated carbon, pointed at the monolayer sorption mechanism [ 64 , 65 , 66 , 67 ].…”

Section: Resultsmentioning

confidence: 99%

Modeling and Optimization of Pollutants Removal during Simultaneous Adsorption onto Activated Carbon with Advanced Oxidation in Aqueous Environment

Dąbek

Picheta-Oleś²,

Szeląg

et al. 2020

Materials

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The paper presents the results of studies on the modeling and optimization of organic pollutant removal from an aqueous solution in the course of simultaneous adsorption onto activated carbons with varied physical characteristics and oxidation using H2O2. The methodology for determining the models used for predicting the sorption and catalytic parameters in the process was presented. The analysis of the influence of the sorption and catalytic parameters of activated carbons as well as the oxidizer dose on the removal dynamics of organic dyes-phenol red and crystal violet-was carried out based on the designated empirical models. The obtained results confirm the influence of specific surface area (S) of the activated carbon and oxidizer dose on the values of the reaction rate constants related to the removal of pollutants from the solution in a simultaneous process. It was observed that the lower the specific surface area of carbon (S), the greater the influence of the oxidizer on the removal of pollutants from the solution. The proposed model, used for optimization of parameters in a simultaneous process, enables to analyze the effect of selected sorbents as well as the type and dose of the applied oxidizer on the pollutant removal efficiency. The practical application of models will enable to optimize the selection of a sorbent and oxidizer used simultaneously for a given group of pollutants and thus reduce the process costs.

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“…Adsorption is favored upon them due to simple design, availability, maintenance, cost effectiveness, easy operation, and economic feasibility. It offers strong competitors against activated carbon, which is immensely utilized for its chemically active nature, higher specific surface area, larger pore volumes, and adsorption capacities [7], but when prepared from coal and lignocellulosic ingredients, it is ultraexorbitant and not ecofriendly [8,9].…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Separation of Brilliant Green Dye from Water by Tartaric Acid-Treated Holarrhena antidysenterica and Citrullus colocynthis Biowaste

Basharat

Rehman

Mitu

2021

Journal of Chemistry

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Holarrhena antidysenterica (Ha) and Citrullus colocynthis (Cc) biowaste from indigenous Pakistan resources was used to remove toxic brilliant green (BG) dye from aqueous solutions in a batch mode. Tartaric acid chemical modification gave promising results than the nonmodified forms of biowaste. Surface characterization was carried out by FT-IR and SEM. The optimum conditions for (BG) dye elimination by Ha-tartaric acid modified (Ha-Ta) were 1.8 g, 45 minutes, 4.0 pH; 40°C, and 100 rpm and with Cc-tartaric acid modified (Cc-Ta) were 1.6 g, 45 minutes, 6.0 pH; 40°C, and 150 rpm dye solution shaking rate, which gave optimum results. Equilibrium data of raw and chemically modified biowaste followed the Langmuir model indicating monolayer chemisorption. Qmax values were found to be 55.24 mg/g, 112.35 mg/g, 50.50 mg/g, and 79.36 mg/g for Ha, Ha-Ta, Cc, and Cc-Ta. Kinetics followed the pseudo-second-order kinetic model. Dye removal involved surface and intraparticle mode of diffusion. Thermodynamic studies proved the process to be spontaneous and exothermic one. The adsorbents can be effectively utilized for the removal of toxic basic dyes, such as BG from wastewaters.

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Adsorption of Crystal Violet onto an Agricultural Waste Residue: Kinetics, Isotherm, Thermodynamics, and Mechanism of Adsorption

Cited by 86 publications

References 24 publications

Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Modeling and Optimization of Pollutants Removal during Simultaneous Adsorption onto Activated Carbon with Advanced Oxidation in Aqueous Environment

Adsorptive Separation of Brilliant Green Dye from Water by Tartaric Acid-Treated Holarrhena antidysenterica and Citrullus colocynthis Biowaste

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