Optimizing decolorization of methylene blue dye by electrocoagulation using Taguchi approach

Tir, Mohamed; Moulai‐Mostefa, Nadji; Nedjhioui, Mohamed

doi:10.1080/19443994.2014.940652

Cited by 19 publications

(3 citation statements)

References 24 publications

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“…To extract MB and other textile colors from industrial effluent, scientists have reported using a variety of techniques. Adsorption [6], biosorption [7], nanofiltration [8] [9], vacuum membrane distillation [10], phytoremediation [11] [12], ultrafiltration [13], biodegradation [14], electrocoagulation [15], coagulation [16], microwave treatment [17], and liquid-liquid extraction [18]. It is difficult to break down MB dye into smaller inorganic molecules using standard techniques because of its heat and light stability as well as nonbiodegradability [19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Nanocomposite CaO/AC/ZnO from Biogenic Wastes of Date Palm Seeds from The Najran Region (Saudi Arabia) and Eggshells for Degradation of Methylene Blue

ALHEMIARY

2024

ijmst

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Metal nanoparticles and activated carbon-based nanocomposite materials are gaining popularity due to their numerous potential applications in a wide range of materials science areas. The current study aims to create novel photocatalyst frameworks for nanocomposites that were synthesized from biogenic waste and used to photodegrade methylene blue (MB) in wastewater under visible light. The activated carbon from date seeds was calcinated at a temperature of 700°C for two hours, and its surface was improved using zinc oxide nanoparticles and calcium oxide nanoparticles manufactured from eggshells at 900oC. XRD, FT-IR, SEM, BET, and TEM analyses were used to characterize the produced nanocomposites. The synthesized nanocomposite photocatalytic activity was evaluated by degrading MB dyes, its model of water pollution. The results showed that the nanocomposite CaO/AC/ZnO has a mesoporous structure with great sorption capability. Also, the photodegradation efficiency of MB using AC, CaO, AC/ZnO, and CaO/AC/ZnO nanocomposite was 33.23, 37.58, 54.61, and 88.92%, respectively, after100 min of sunlight irradiation indicating that photodegradation efficiency increases by improving the surface properties of AC. The CaO/AC/ZnO nanocomposite exhibited a 96.7% removal efficiency of MB following 120 min of visible light radiation exposure. Therefore, the CaO/AC/ZnO nanocomposite has a promising opportunity to function as a versatile and effective photocatalyst for photodegradation of organic dyes in wastewater.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Nanocomposite CaO/AC/ZnO from Biogenic Wastes of Date Palm Seeds from The Najran Region (Saudi Arabia) and Eggshells for Degradation of Methylene Blue

ALHEMIARY

2024

ijmst

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“…Furthermore, nanosilica from SCBA can be utilised to absorb methylene blue (MB), which is a cationic thiazine dye that is harmful to human and environment [24], and to remove heavy metals [25] which are commonly found in textile industry effluents. Although several MB removal procedures have been reported in the literature, such as coagulation [26], ultrafiltration [27], nanofiltration [28], and microwave treatment [29], the high equipment costs associated with these methods are a major drawback. Therefore, there is a need for more cost-effective MB removal methods.…”

Section: Introductionmentioning

confidence: 99%

Green nanosilica and highly efficient removal of methylene blue

Thuadaij,

Yodyingyong

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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A new precipitation method has been developed for improving the production of nanosilica that is faster and more environmentally friendly. The study investigates the effects of different acid types and concentrations, as well as aging times, to determine the optimal conditions for preparing nanosilica from sugarcane bagasse ash (SCBA). Nanosilica synthesised with citric acid exhibits a higher specific surface area (554.01 m2 g−1) and yield (88.54%) compared to those synthesised with sulfuric, oxalic, and acetic acids. X-ray diffraction (XRD) patterns and transmission electron microscope (TEM) images show that the synthesised nanosilica has an amorphous silica phase with a particle diameter of approximately 5.6 nm. The applicability of the synthesised nanosilica as an adsorbent for methylene blue (MB) is studied. Various conditions such as adsorbent dosage, contact time, and initial concentration of MB are evaluated. The results reveal that the synthesised nanosilica has a high adsorption capacity (232.29 mg g−1) and removal efficiency (R%) of 90% for MB. The experimental results align with the Freundlich model and can be used for effective dye removal. The development of a simple and environmentally friendly method for synthesising nanosilica with superior adsorption properties is an important contribution to the field of waste management and provides a useful tool for tackling environmental pollution caused by organic dyes.

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“…The effect of operational parameters and mechanism of removal of methylene blue dye by electrocoagulation was studied and maximum dye removal efficiency was found to be 99.37% [21]. Taguchi method was applied to determine the optimum removal of methylene blue (MB) using iron electrodes [22]. Decolorization of methylene blue dye waste by electrocoagulation technique was studied and found that the energy consumption for dye removal using aluminum and iron electrodes was 0.634 and 0.375 kW.h/m 3 , respectively [23].…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation of Methylene Blue using Graphene Oxide as Adsorbent

Lakshmi¹

2019

JESPR

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This work has been carried out to minimize environmental pollution by investigation of efficient electrocoagulation of methylene blue by aluminum electrode cell setup using graphene oxide as adsorbent. The efficiency of dye removal was evaluated by the absorbance of methylene blue at 665 nm. The operating parameters for electrocoagulation such as current density (10-30 mA/cm 2), electrolysis time (5-20 minutes), pH of the medium (2 to 10), stirring speed (150-350 rpm), inter electrode distance (0.8 to 2 cm) and NaCl concentration (1.5-5.0 g/L) were optimized and found to be 30 mA/cm 2 , 20 min, pH 7.0, 300 rpm, 2 cm and 5 g/L respectively. The results showed that the dye removal efficiency was enhanced to 99% by the addition of graphene oxide. The result of the present research work can be useful for an efficient large-scale treatment of industrial effluents contaminated with methylene blue.

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Optimizing decolorization of methylene blue dye by electrocoagulation using Taguchi approach

Cited by 19 publications

References 24 publications

Synthesis of Novel Nanocomposite CaO/AC/ZnO from Biogenic Wastes of Date Palm Seeds from The Najran Region (Saudi Arabia) and Eggshells for Degradation of Methylene Blue

Synthesis of Novel Nanocomposite CaO/AC/ZnO from Biogenic Wastes of Date Palm Seeds from The Najran Region (Saudi Arabia) and Eggshells for Degradation of Methylene Blue

Green nanosilica and highly efficient removal of methylene blue

Electrocoagulation of Methylene Blue using Graphene Oxide as Adsorbent

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