Elaboration and properties of a new SDS/CTAB@Montmorillonite organoclay composite as a superb adsorbent for the removal of malachite green from aqueous solutions

Haounati, Redouane; Ouachtak, Hassan; Haouti, Rachid El; Akhouairi, Siham; Largo, Fadwa; Akbal, Feryal; Benlhachemi, A.; Jada, Amane; Addi, Abdelaziz Aït

doi:10.1016/j.seppur.2020.117335

Cited by 84 publications

(28 citation statements)

References 60 publications

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“…This value is in agreement with the values reported by Haounati et al., Garcia‐Padilla et al., and El‐Kousy et al. [ 53–55 ] On the other hand, the XRD pattern of MagMt displayed new diffraction peaks at 2θ = 35.6°, 53.6°, 57.3°, and 63.0°, which are characteristic peaks of Fe 3 O 4 . [ 56 ] These findings supported the intercalation of Fe 3 O 4 into interlayers [ 57 ] and the magnetization of montmorillonite.…”

Section: Resultssupporting

confidence: 92%

Adsorption of Diazo Dye from Aqueous Solutions by Magnetic Montmorillonite Composite

Akar

Ozdemir

Sayin

et al. 2020

CLEAN Soil Air Water

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Synthetic dyes have complex molecular structures and are stable molecules against oxidizing agents, sunlight, and microbial attack. Therefore, the treatment of dye‐containing wastewater using appropriate techniques is of great importance. Difficulties in separation and recovery of an adsorbent from the solution limit the large‐scale applications of the adsorption process. A magnetic separation technique can be adapted to the adsorption process to overcome these limitations. In this study, a natural mineral‐based magnetic adsorbent is prepared by a co‐precipitation method. Adsorption performance of magnetic montmorillonite (MagMt) is evaluated in both batch and continuous systems as a function of initial pH, contact time, adsorbent dosage, ionic strength, flow rate, and bed depth. MagMt is characterized through infrared (IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X‐ray analysis (EDX), vibrating sample magnetometer (VSM), X‐ray diffraction (XRD), and zeta potential measurement. Sorption yield of MagMt for Bismark Brown‐Y (BB‐Y) is found as maximum (98.60%) at pH 4 with 40 mg adsorbent. Fast sorption equilibrium is attained within 10 min and the sorption data follow the pseudo‐second‐order kinetic model and Langmuir isotherm model. The maximum monolayer sorption capacity of MagMt is 138.70 mg g‒1.

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Section: Resultssupporting

confidence: 92%

Adsorption of Diazo Dye from Aqueous Solutions by Magnetic Montmorillonite Composite

Akar

Ozdemir

Sayin

et al. 2020

CLEAN Soil Air Water

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show abstract

“…The discharge of dye-containing effluents by textile industries is considered as one of the major problems that threatens the aquatic environment [1][2][3]. In addition to the cosmetic problem, the toxicity and carcinogenic properties of most of these dyes are of serious concern [4,5].…”

Section: Introductionmentioning

confidence: 99%

Phase Transformation, Photocatalytic and Photoluminescent Properties of BiPO4 Catalysts Prepared by Solid-State Reaction: Degradation of Rhodamine B

et al. 2021

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Polycrystalline bismuth phosphate BiPO4 was synthesized by solid-state reaction at different temperatures varying from 500 to 900 °C. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS) and Raman spectroscopy. The low-temperature phase of BiPO4 has monoclinic structure with a space group P21/n, and was transformed into the monoclinic phase P21/m with a slight distortion of monoclinic lattice when it was heated above 500 °C. The effect of the transformation on the structure, morphology and photocatalytic properties was examined. The photocatalytic activity of each sample, in presence of Rhodamine B (RhB) in aqueous solution, was carried out and analyzed under UV light irradiation. Photoexperiments showed that the material prepared at 500 °C is the best catalyst with degradation efficiency of the order of 96% after 12 min of reaction time under UV light irradiation. This high photocatalytic efficiency could be due to their structural and morphological changes. The photocatalytic degradation mechanism of RhB in the presence of the best photocatalyst BiP-500 °C is proposed. The stability of the catalyst was also examined by carrying out four successive tests of the degradation in the presence of BiP-500 °C. Total organic carbon (TOC) was used to further estimate the rate of mineralization in the presence of BiP-500 °C (83% TOC removal). Photoluminescence experiments performed under UV-laser light irradiation revealed emissions in the green-orange range, with optimal intensities for the mix systems observed at 550 °C.

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“…16 Dyes attract more awareness as one of the most hazardous pollutants, which spoil the productivity of soil that cause various serious socioeconomic dilemmas and health hazards. 17 Throughout the years, several techniques, such as adsorption, chemical deposition, ionic exchange, solid-liquid phase extraction, photocatalytic degradation, coagulation, membrane, and electrochemical systems have been used. [18][19][20][21][22][23][24][25][26][27][28] Adsorption is vastly avowed as the most auspicious and efficient technique because of its low cost/capital invested, insensitivity to toxic substances, simplicity of design, and prociency of the operation.…”

Section: Introductionmentioning

confidence: 99%

Green construction of eco-friendly phosphotungstic acid Sr-MOF catalysts for crystal violet removal and synthesis of coumarin and xanthene compounds

et al. 2021

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Elaboration and properties of a new SDS/CTAB@Montmorillonite organoclay composite as a superb adsorbent for the removal of malachite green from aqueous solutions

Cited by 84 publications

References 60 publications

Adsorption of Diazo Dye from Aqueous Solutions by Magnetic Montmorillonite Composite

Adsorption of Diazo Dye from Aqueous Solutions by Magnetic Montmorillonite Composite

Phase Transformation, Photocatalytic and Photoluminescent Properties of BiPO4 Catalysts Prepared by Solid-State Reaction: Degradation of Rhodamine B

Green construction of eco-friendly phosphotungstic acid Sr-MOF catalysts for crystal violet removal and synthesis of coumarin and xanthene compounds

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