Comparative study on removal of two basic dyes in aqueous medium by adsorption using activated carbon from Ziziphus lotus stones

Boudechiche, Noreddine; Fares, Malika; Ouyahia, Siham; Yazid, Hynda; Trari, M.; Sadaoui, Zahra

doi:10.1016/j.microc.2019.02.010

Cited by 109 publications

(49 citation statements)

References 60 publications

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“…Therefore, treatment of aqueous solutions containing dyes has been developed in the last few years . Several chemical and physical methods, including coagulation/flocculation, nanofiltration, oxidation‐precipitation, ozonation, Fenton and photo Fenton, and adsorption, have been revealed in the literature for dye removal from wastewater. Among the mentioned techniques, adsorption is a simple, inexpensive and useful method for removal of dyes from aqueous solutions .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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In this study, core‐shell structures of magnetite nanoparticles coated with CMK‐8 ordered mesoporous carbon (Fe3O4@SiO2‐CMK‐8 NPs) have been successfully synthesized for the first time by carbonizing sucrose inside the pores of the Kit‐6 mesoporous silica. The nano‐sized mesoporous particles were characterized by X‐ray diffraction, Fourier transform‐infrared spectroscopy, scanning electron microscope, dynamic light scattering, vibrating‐sample magnetometer, Brunauer–Emmett–Teller (BET) and transmission electron microscopy instruments. The obtained nanocomposite was used for removal of Reactive Yellow 160 (RY 160) dye from aqueous samples. The N2 adsorption–desorption method (at 77 K) confirmed the mesoporous structure of synthesized Fe3O4@SiO2‐CMK‐8 NPs. Also, the surface area was calculated by the BET method and Langmuir plot as 276.84 m2/g and 352.32 m2/g, respectively. The surface area, volume and pore diameter of synthesized nanoparticles (NPs) were calculated from the pore size distribution curves using the Barrett–Joyner–Halenda formula (BJH). To obtain the optimum experimental variables, the effect of various experimental parameters on the dye removal efficiency was studied using Taguchi orthogonal array experimental design method. According to the experimental results, about 90.0% of RY 160 was removed from aqueous solutions at the adsorbent amount of 0.06 g, pH 3 and ionic strength = 0.05 m during 10 min. The pseudo‐second order kinetic model provided a very good fit for the RY 160 dye removal (R2 = 0.999). The Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models were applied to describe the equilibrium isotherms, and the Langmuir isotherm showed the best fit to data with the maximum adsorption capacity of 62.893 mg/g. Furthermore, the Fe3O4@SiO2‐CMK‐8 NPs could be simply recovered by external magnet, and exhibited recyclability and reusability for a subsequent six runs.

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Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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“…From all these results it is clear that both plot for all the concentrations shows some linearity, however, the line does not pass through the origin (Intercept≠0) indicating the involvement of film diffusion along with intraparticle diffusion. The LFD model results are in good agreement with the Bangham model and the linear plot did not pass through origin suggesting the possible involvement of film diffusion during the adsorption process [63,64]. In order to describe the kinetics involved in the process of adsorption of CR and IC on CHAC, PFO and PSO models were fitted with experimental data.…”

Section: Pseudo Second Order (Pso) Modelmentioning

confidence: 65%

Solution combustion synthesis of calcium aluminate nanocomposite using coffee husk extract as green fuel and its application in adsorptive amputation of anionic dyes

Murthy

Gowrishankar

Chandraprabha

et al. 2020

Mater. Res. Express

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Solution combustion synthesis of calcium aluminate (CaAl 2 O 4 ) nanocomposite using coffee husk extract and its adsorption capacity for removal of Congo red (CR) and Indigo carmine (IC) are reported. Physiochemical properties of adsorbent were studied by PXRD, SEM, TEM and point of zero charge. Batch adsorption studies were conducted to study the effect of adsorbent dosage, pH, contact time, initial dye concentration and temperature on adsorption efficiency of coffee husk derived calcium aluminate nanocomposite (CHCA). Among the isotherms used, Langmuir model explained best the equilibrium data and the maximum monolayer adsorption capacity was found to be 377 and 135 mg/g for CR and IC, respectively. Mass transfer analysis indicated adsorptive removal of dyes was controlled by both external and internal diffusion. Pseudo-first-order model fitted best with experimental kinetic data and adsorption efficiency increased with an increase in the initial bulk concentration of CR and IC. Thermodynamic analysis indicated that adsorption of CR and IC on CHCA is feasible, spontaneous and exothermic in nature. The magnitude of enthalpy and heat of adsorption suggested that the adsorption is physical in nature. The present study explores the potential of coffee husk extract, an agro-based bio-waste, as a novel and eco-friendly fuel in the synthesis of CHCA and the synthesised nanocomposite as a potential adsorbent for the removal of synthetic dyes.

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“…Kaolin of Tamazert from Djebel Debbagh, Guelma (eastern region of Algeria) is commercialized without additives by SOAKLA society. Before the experiments, kaolin was ground, ultrasonically dispersed in deionised water, centrifuged and dried at 373 K, 10 g of kaolin were dispersed in 100 cm 3 of DMSO, and the whole is subjected to moderate stirring for 96 h at room temperature. The excess solution was removed, and the kaolin, separated by centrifugation, was oven dried at 333 K [23].…”

Section: Methodsmentioning

confidence: 99%

“…where Ci and Ce are the initial and the equilibrium dye concentrations [mg/dm 3 ], V is the volume of dye solution used [dm 3 ], and m is the mass of material used [g].…”

Section: Adsorption Proceduresmentioning

confidence: 99%

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Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide

Lellou

Kadi

Guemou

et al. 2020

Ecological Chemistry and Engineering S

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Tamazert kaolin was modified with dimethyl sulfoxide (DMSO). The starting material and resulting from the intercalation were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). Intercalation caused considerable changes in our clay by increasing the basal spacing to 11.22 Å, an intercalation rate of 98 %. The adsorption of methylene blue was studied as a function of pH, contact time, temperature, dye concentrations and adsorbents. Kinetic data have been adequately described by the pseudo-second order and intraparticle scattering model. The adsorption isotherm is in good agreement with the Redlich-Peterson model. A change in thermodynamic values (ΔH°, ΔS° and ΔG°) was observed after intercalation. Adsorption became non-spontaneous exothermic and ordered.

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Comparative study on removal of two basic dyes in aqueous medium by adsorption using activated carbon from Ziziphus lotus stones

Cited by 109 publications

References 60 publications

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Solution combustion synthesis of calcium aluminate nanocomposite using coffee husk extract as green fuel and its application in adsorptive amputation of anionic dyes

Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide

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