Oxygenated functionalities enriched MWCNTs decorated with silica coated spinel ferrite – A nanocomposite for potentially rapid and efficient de-colorization of aquatic environment

Wabaidur, Saikh Mohammad; Khan, Moonis Ali; Siddiqui, Masoom Raza; Otero, Marta; Jeon, Byong‐Hun; ALOthman, Zeid A.; Hakami, Afnan Ali Hussain

doi:10.1016/j.molliq.2020.113916

Cited by 117 publications

(43 citation statements)

References 56 publications

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“…By comparing the treatment effects of SAEF and DEF, we find that the TC conversion efficiency of SAEF is 5.07% lower than that of DEF, the COD removal rate of SAEF and DEF was nearly the same, but the sludges output and energy consumption of DEF were 3.23 times and 1.15 times of SAEF, respectively. In the electro-Fenton reaction system, Fe 2+ was a necessary condition for catalyzing H2O2 to produce OH [44]. Compared with DC, By comparing the treatment effects of SAEF and DEF, we find that the TC conversion efficiency of SAEF is 5.07% lower than that of DEF, the COD removal rate of SAEF and DEF was nearly the same, but the sludges output and energy consumption of DEF were 3.23 times and 1.15 times of SAEF, respectively.…”

Section: Comparison Of Treatment Effects Among Saef Def and Saccmentioning

confidence: 99%

Investigation on Mechanism of Tetracycline Removal from Wastewater by Sinusoidal Alternating Electro-Fenton Technique

Zhou

Zhuang

et al. 2022

Sustainability

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Sinusoidal alternating electro-Fenton (SAEF) is a new type of advanced electrochemical oxidation technology for the treatment of refractory organic wastewater. In this research, the removal performance and degradation mechanism of tetracycline (TC) were investigated, and the optimal operation parameters were determined. Scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectrometer (FTIR) were used to characterize the morphology, elemental composition, crystal structure, function groups of sludge produced by SAEF. UV-visible spectroscopy (UV) and liquid chromatograph-mass spectrometer (LC-MS/MS) were employed to determine the concentration of organic matter, middle products of decomposed organics in the SAEF process, respectively. The results showed that the removal rates of TC, chemical oxygen demand (COD), electric energy consumption (EEC) and the amount of produced sludge (Ws) are 94.87%, 82.42%, 1.383 kWh⋅m−3 and 0.1833 kg⋅m−3 by SAEF, respectively, under the optimal conditions (pH = 3.0, conductivity (κ) = 1075 μS⋅cm−1, current density (j) = 0.694 mA⋅cm−2, initial c (TC) = 100 mg·dm−3, c [30%H2O2] = 1.17 cm3⋅dm−3, frequency (f) = 50 Hz, t = 120 min). Compared with pure direct electro-Fenton (DEF) or sinusoidal alternating current coagulation (SACC), SAEF was a highly effective method with low-cost for the treatment of TC wastewater. It was found that the conjugated structure of TC was destroyed to generate intermediate products, and then most of them was gradually mineralized into inorganic materials in the SAEF process.

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Section: Comparison Of Treatment Effects Among Saef Def and Saccmentioning

confidence: 99%

Investigation on Mechanism of Tetracycline Removal from Wastewater by Sinusoidal Alternating Electro-Fenton Technique

Zhou

Zhuang

et al. 2022

Sustainability

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“…towards MB and celestine blue of 204 mg g −1 (pH: 5.6, T: 323 K) and 714 mg g −1 (pH: 5.5, T: 293 K), respectively. [209] Magnetic Zeolites: Zeolites are porous crystalline aluminosilicates (natural or synthetic) with TO 4 tetrahedral units (T = Si, Al). These materials have many applications in the adsorptive treatment of water.…”

Section: Magnet-responsive Adsorbentsmentioning

confidence: 99%

Smart Adsorbents for Aquatic Environmental Remediation

Zare‬

Mudhoo

Khan

et al. 2021

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“…Approximately 10–15% of dyes are lost during their processing operations. Most dyes, and especially azo-dyes, are toxic to biota [ 4 , 5 ]. Excessive dye concentrations in aquatic system can cause eutrophication, which is harmful for both aquatic plants and animals.…”

Section: Introductionmentioning

confidence: 99%

Carbon Based Polymeric Nanocomposites for Dye Adsorption: Synthesis, Characterization, and Application

et al. 2021

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Agglomeration and restacking can reduce graphene oxide (GO) activity in a wide range of applications. Herein, GO was synthesized by a modified Hummer’s method. To minimize restacking and agglomeration, in situ chemical oxidation polymerization was carried out to embed polyaniline (PANI) chains at the edges of GO sheets, to obtain GO-PANI nanocomposite. The GO-PANI was tested for the adsorptive removal of brilliant green (BG) from an aqueous solution through batch mode studies. Infrared (FT-IR) analysis revealed the dominance of hydroxyl and carboxylic functionalities over the GO-PANI surface. Solution pH-dependent BG uptake was observed, with maximum adsorption at pH 7, and attaining equilibrium in 30 min. The adsorption of BG onto GO-PANI was fit to the Langmuir isotherm, and pseudo-second-order kinetic models, with a maximum monolayer adsorption capacity (qm) of 142.8 mg/g. An endothermic adsorption process was observed. Mechanistically, π-π stacking interaction and electrostatic interaction played a critical role during BG adsorption on GO-PANI.

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Oxygenated functionalities enriched MWCNTs decorated with silica coated spinel ferrite – A nanocomposite for potentially rapid and efficient de-colorization of aquatic environment

Cited by 117 publications

References 56 publications

Investigation on Mechanism of Tetracycline Removal from Wastewater by Sinusoidal Alternating Electro-Fenton Technique

Investigation on Mechanism of Tetracycline Removal from Wastewater by Sinusoidal Alternating Electro-Fenton Technique

Smart Adsorbents for Aquatic Environmental Remediation

Carbon Based Polymeric Nanocomposites for Dye Adsorption: Synthesis, Characterization, and Application

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