Removal of methylene blue (basic dye) by coagulation-flocculation with biomaterials (bentonite and Opuntia ficus indica)

Ihaddaden, Soraya; Aberkane, Dihia; Boukerroui, Abdelhamid; Robert, Didier

doi:10.1016/j.jwpe.2022.102952

Cited by 210 publications

(56 citation statements)

References 47 publications

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“…cap. (mg g −1 ) Reference Ionic Flocculation 100 93.71 93.71 101.38 This work Flocculation 50 98.63 49.32 Unstudied 20 Flocculation 90 98.99 89.09 Unstudied 46 Adsorption 20 90.00 18.00 35.70 22 Adsorption 100 97.50 97.50 52.76 10 Ultrafiltration 6 99.30 5.96 Unstudied 18 Ultrafiltration 5 94.33 4.72 Unstudied 19 …”

Section: Resultsmentioning

confidence: 97%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

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Section: Resultsmentioning

confidence: 97%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

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“…This isotherm model does not show the maximum amount of adsorption, so this model is suitable for the growth of an unlimited amount of adsorbed with increasing Ce concentration. Freundlich's isotherm model can be expressed by equation 4. log qe = log KF + 1/n log Ce (4) where qe refers to the amount of MB adsorbed per gram of Fe3O4-TD at equilibrium (mg g -1 ), Ce is the concentration of MB in solution at equilibrium (mg g -1 ), KF is the Freundlich constant associated with adsorption capacity, and 1/n is the heterogeneity factor. The values of KF and n are obtained from the slope and intercept of the straight-line equation of the graph of log qe against log Ce.…”

Section: Study Of Mb Adsorption Isotherm On Fe3o4-tdmentioning

confidence: 99%

“…Various studies related to the synthetic dye processing have been carried out, including regarding the ozonation method [3], coagulation and flocculation [4], biological treatment using bacteria [5], electrochemistry [6], and oxidation [7]. However, some weaknesses in these studies are found still.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly synthesis of magnetite based on tea dregs (Fe3O4-TD) for methylene blue adsorbent from simulation waste

Rahmayanti

Yahdiyani

Afifah

2022

CST

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Methylene blue is a popular dye used in the batik industry; however, it potentially causes environmental problems in view of the residual MB content in the liquid waste, which is difficult to naturally degrade. This study aimed to synthesize Fe3O4-TD using tea dregs from household waste and its application as an adsorbent for methylene blue dye. The synthesis was carried out using the reverse co-precipitation method with water as a solvent at room temperature. Fe3O4-TD characterization using FTIR, XRD, and PSA. The adsorption of methylene blue (MB) on Fe3O4-TD was studied at various pH MB, reaction time, and concentration MB to determine the kinetic model and MB adsorption isotherm on Fe3O4-TD and the interactions that occur between MB and Fe3O4-TD. FTIR spectra and X-Ray diffractogram showed that the magnetite formed in a pure state did not mix with other iron oxides. The crystal and particle size of Fe3O4-TD is 18.92 nm and 26.70 µm, respectively. MB adsorption on Fe3O4-TD occurred well at pH > 3 and followed the Ho' pseudo-second-order kinetics model and the Freundlich isotherm model. The interactions between MB and Fe3O4-TD through electrostatic interactions, hydrogen bonds, and phi-phi interactions.

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“… 4 Hence, water purification is necessary for the textile effluents. Many traditional treatment processes are being used such as biological, 5 adsorption, 6 oxidation, 7 extraction, 8 coagulation, flocculation, 9 and so forth; however, these conventional methods are no longer successful due to advancements in coloring technology and the complex dye structure. Therefore, it is imperative to develop a treatment process that not only eliminates these resistant textile pollutants but also enhances water quality.…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Induced Reactive Yellow 145 Discoloration: Structural and Photocatalytic Studies of Graphene Quantum Dot-Incorporated TiO₂

et al. 2023

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Visible light-induced photocatalytic treatment of organic waste is considered a green and efficient route. This study explored the structural and photocatalytic performance of graphene quantum dot (GQD)-incorporated TiO 2 nanocomposites to treat reactive yellow 145 (RY145) dye. For the effective removal of the RY145, efforts were made to better understand the kinetics of the process and optimization of the treatment parameters. Different GQD-doped TiO 2 nanocomposites were synthesized employing the sol−gel method. Physicochemical characteristics of the synthesized nanocomposites were studied through FTIR, XRD, UV− visible spectroscopy, SEM, and EDX. Screening studies were conducted for synthesis and reaction optimization. The results indicated that GQD−TiO 2 significantly enhanced the photocatalytic discoloration for RY145 dye. Among the synthesized nanocomposites, 15GQD−TiO 2 calcined at 300 exhibited 99.3% RY145 discoloration in 30 min under visible light irradiation. Following the pseudo-first-order reaction, the photocatalytic reaction constant K app progressively declined with an increase in the concentration of RY145. The heterogeneous reaction system conformed to the Langmuir−Hinshelwood isotherm, as indicated by the K C (1.08 mg L −1 min −1 ) and the K LH (0.18 L mg −1 ) values. O 2•− was found to be the major contributor in GQD−TiO 2 -300 to decolorize RY154, while TiO 2 and GQDs played a vital role in generation of electrons and holes. Additionally, after recycling to the seventh cycle, only 9% decline in photocatalytic performance was observed for the synthesized nanocomposite.

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Removal of methylene blue (basic dye) by coagulation-flocculation with biomaterials (bentonite and Opuntia ficus indica)

Cited by 210 publications

References 47 publications

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Eco-friendly synthesis of magnetite based on tea dregs (Fe3O4-TD) for methylene blue adsorbent from simulation waste

Visible Light-Induced Reactive Yellow 145 Discoloration: Structural and Photocatalytic Studies of Graphene Quantum Dot-Incorporated TiO₂

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Removal of methylene blue (basic dye) by coagulation-flocculation with biomaterials (bentonite and Opuntia ficus indica)

Cited by 210 publications

References 47 publications

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Eco-friendly synthesis of magnetite based on tea dregs (Fe3O4-TD) for methylene blue adsorbent from simulation waste

Visible Light-Induced Reactive Yellow 145 Discoloration: Structural and Photocatalytic Studies of Graphene Quantum Dot-Incorporated TiO2

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Visible Light-Induced Reactive Yellow 145 Discoloration: Structural and Photocatalytic Studies of Graphene Quantum Dot-Incorporated TiO₂