Green iron oxides/amino-functionalized MCM-41 composites as adsorbent for anionic azo dye: Kinetic and isotherm studies

Souza, Ana Paula Nazar de; Licea, Yordy E.; Colaço, Marcos V.; Senra, Jaqueline D.; Carvalho, Nakédia M. F.

doi:10.1016/j.jece.2021.105062

Cited by 24 publications

(5 citation statements)

References 66 publications

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“…Such a smooth shift to a less negative potential with decreasing pH indicates a more appreciable anionic character of the GWW/APTES surface. De Souza et al prepared a composite from green iron oxide nanoparticles and Camellia sinensis (black tea) and further functionalized with APTES. It was found that the isoelectric point of the functionalized composite was at pH 1.9, which was later successfully employed for anionic azo dye removal.…”

Section: Resultsmentioning

confidence: 99%

“…Although the profile of each adsorbent differs from one another, all of them have advantages and disadvantages. Table compares GWW/APTES and other adsorbents reported in the literature studies. ,− ,− The maximum adsorption capacity ( Q max ) is the main factor taken into account to evaluate the adsorbent performances. Therefore, the various adsorbents’ performance, including amino-functionalized materials, activated carbons, and clay materials, ,− ,− in the removal of MO are presented in Table …”

Section: Resultsmentioning

confidence: 99%

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3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

et al. 2022

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A biomass amino silica-functionalized material was successfully prepared by a simple sol–gel method. 3-Aminopropyltriethoxysilane (APTES) was added to a tannin-rich grape residue to improve its physicochemical properties and enhance the adsorption performance. The APTES functionalization led to significant changes in the material’s characteristics. The functionalized material was efficiently applied in the removal of methyl orange (MO) due to its unique characteristics, such as an abundance of functional groups on its surface. The adsorption process suggests that the electrostatic interactions were the main acting mechanism of the MO dye removal, although other interactions can also take place. The functionalized biomass achieved a very high MO dye maximum adsorption capacity ( Q max ) of 361.8 mg g –1 . The temperature positively affected the MO removal, and the thermodynamic studies indicated that the adsorption of MO onto APTES-functionalized biomass was spontaneous and endothermic, and enthalpy is driven in the physisorption mode. The regeneration performance revealed that the APTES-functionalized biomass material could be easily recycled and reused by maintaining very good performance even after five cycles. The adsorbent material was also employed to treat two simulated dye house effluents, which showed 48% removal. At last, the APTES biomass-based material may find significant applications as a multifunctional adsorbent and can be used further to separate pollutants from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

et al. 2022

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“…In addition, maximum adsorption capacities from Langmuir were found in the order: AY (82.73 mg g–1) < RhB (125.13 mg g −1 ) < MO (180.51 mg g −1 ). In comparison, ZnFe 2 O 4 @AC obtained higher AY adsorption capacity than chitosan‐SBA‐15 nanofibers (40 mg g −1 ), 40 higher MO adsorption capacity than Fe/MCM‐41‐NH 2 (105.3 mg g −1 ), 41 higher RhB adsorption capacity than zeolitic–imidazolate framework‐8 (95.5 mg g −1 ) 42 and higher curcumin adsorption capacity than mesoporous MCM‐41 (46.06 mg g −1 ) 43 . According to Table 8, the dye adsorption capacity obtained for ZnFe 2 O 4 @AC in this work was greater than results from previous works.…”

Section: Resultsmentioning

confidence: 89%

Magnetic porous carbon nanocomposites derived from cactus (Opuntia stricta Haw.) for the removal of toxic dyes: optimization of synthesis conditions using response surface methodology

Nguyen

Jalil

Huynh

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDWater purification of industrial effluents containing toxic organic dyes by low‐cost biomass‐based adsorbents is not only in accordance with environmental remediation policies, but also reduces total treatment costs. The conversion of Opuntia stricta Haw. biowaste, one of the most harmful invasive plants, into absorbents can lessen the ecological problems caused by this plant species as well as create more value‐added products for water decontamination. We report on the fabrication conditions of O. stricta zinc ferrite (ZnFe2O4)‐loaded activated carbon (ZnFe2O4@AC) for the elimination of two types of dyes including Rhodamine B (RhB), methyl orange (MO) and acid yellow17 (AY), with process optimization based on response surface methodology combined with Box–Behnken design. The optimized ZnFe2O4@AC was structurally characterized by scanning electron microscopy and X‐ray diffraction.RESULTSThe optimal ZnFe2O4@AC was attained at a 1.5 ZnFe2O4:OBC ratio, 5 h carbonization time and 519 °C pyrolysis temperature. In removing RhB, MO and AY by optimized ZnFe2O4@AC, remarkable adsorption capacities (53.34–82.8 mg g−1) were achieved via confirmation tests with very low errors (<2%) and high desirability (>95%). Moreover, kinetic results suggested that the Elovich model was the best description for RhB and AY dye adsorption, whereas MO adsorption by ZnFe2O4@AC followed the pseudo‐second‐order model. The maximum adsorption capacities calculated from the Langmuir equation were determined in the order: AY (82.73 mg g−1) < RhB (125.13 mg g−1) < MO (180.51 mg g−1).CONCLUSIONZnFe2O4@AC derived from O. stricta could be recommended as a high‐efficiency bioadsorbent for the elimination of cationic, anionic and neutral dyes. © 2022 Society of Chemical Industry (SCI).

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“…Improper disposal of toxic and recalcitrant pollutants is a major problem since it brings serious risks to the health of living beings and causes environmental deterioration. 20,21 The removal of dyes commonly found in industrial effluents by IONPs has been extensively studied, [22][23][24][25][26][27][28] among them the heterogeneous Fenton system plays a central role to mineralize the contaminant. 2,[6][7][8]10,11 IONPs prepared by a green route with extracts of black tea, 7 Yerba Mate, 6,8 and green tea, 11 were applied in the degradation of the dye methyl orange.…”

Section: Introductionmentioning

confidence: 99%

Effect of Camellia sinensis Origin and Heat Treatment in the Iron Oxides Nanomaterials Composition and Fenton Degradation of Methyl Orange

Franco¹,

Silva²,

Licea³

et al. 2023

J. Braz. Chem. Soc.

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Sustainable and environmentally friendly methods for nanomaterials synthesis have been emerging recently. The use of extracts of polyphenol-rich plants with high reducing and chelating power is advantageous because the polyphenol can protect the nanomaterial from agglomeration and deactivation. Green nanomaterials have been applied in several areas, including remediation of toxic organic pollutants from contaminated effluents. Herein, we describe the preparation of green iron oxide nanoparticles (IONPs) with extracts of the plant Camellia sinensis as black tea for dye removal application. The as-prepared IONPs were composed of amorphous FeOOH and FeII/III-polyphenol complexes. To obtain crystalline and pure iron-based nanomaterials, the amorphous precursor was annealed at 900 ºC. Samples of black tea from different regions were used to verify the reproducibility of the iron phases formed. The same iron phases were obtained for all black tea samples, α-Fe2O3 (hematite), FePO4, and Fe3PO7, but in different proportions. The materials were applied as heterogeneous-Fenton catalysts for the removal of the dye methyl orange. The amorphous as-prepared IONPs were more active than the respective annealed IONPs due to the proton release from the polyphenol into the reaction medium, setting the pH to around 3, which is the optimum pH for the Fenton system.

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Green iron oxides/amino-functionalized MCM-41 composites as adsorbent for anionic azo dye: Kinetic and isotherm studies

Cited by 24 publications

References 66 publications

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

Magnetic porous carbon nanocomposites derived from cactus (Opuntia stricta Haw.) for the removal of toxic dyes: optimization of synthesis conditions using response surface methodology

Effect of Camellia sinensis Origin and Heat Treatment in the Iron Oxides Nanomaterials Composition and Fenton Degradation of Methyl Orange

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