Effective removal of malachite green from local dyeing wastewater using zinc-tungstate based materials

Abubakar, Hassana Ladio; Tijani, Jimoh Oladejo; Abdulkareem, A. S.; Egbosiuba, Titus Chinedu; Mann, A.; Mustapha, S.; Ajiboye, Emmanuel Ayoride

doi:10.1016/j.heliyon.2023.e19167

Cited by 17 publications

(4 citation statements)

References 82 publications

(143 reference statements)

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“…Similarly, for the adsorption of MO on the TKC-Ni 0 NP surface matrix, adsorption capacities of 214.25, 444.11, and 646.50 mg/g were achieved after 60 min of equilibrium time with initial concentrations of 50, 100, and 150 mg/L, respectively. The rapid initial phase of increment in the adsorption capacity can be attributed to the abundant availability of vacant sites at the start of the adsorption process. , As the process continues, these sites are quickly occupied by dye molecules, eventually reaching a saturation point where nearly all unoccupied sites become filled, leading to adsorbent saturation. , During the first few minutes (10 min), the dye molecules had easy access to the active sites, which became saturated with time.…”

Section: Resultsmentioning

confidence: 99%

“…The rapid initial phase of increment in the adsorption capacity can be attributed to the abundant availability of vacant sites at the start of the adsorption process. 27,51 As the process continues, these sites are quickly occupied by dye molecules, eventually reaching a saturation point where nearly all unoccupied sites become filled, leading to adsorbent saturation. 52,53 During the first few minutes (10 min), the dye molecules had easy access to the active sites, which became saturated with time.…”

Section: Influence Of Contact Timementioning

confidence: 99%

“…Accordingly, the removal efficiency of CV and MO at equilibrium and the adsorption capacity of the TKC-Ni 0 NP nanocomposite at equilibrium ( q e ) were evaluated using eq and eq removal .25em efficiency .25em false( % false) = ( C 0 − C normale C 0 ) × 100 % q e = ( C 0 − C normale m ) V in which C o (mg/L) and C e (mg/L) are the concentrations of CV and MO dyes at initial and at equilibrium conditions.…”

Section: Introductionmentioning

confidence: 99%

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Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Ike,

Babayemi,

Egbosiuba

et al. 2024

ACS Appl. Eng. Mater.

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In this study, a novel biobased treated kaolin clay incorporated with zerovalent nickel (TKC-Ni 0 NPs) was fabricated and employed as an efficient functionalized adsorbent for the elimination of crystal violet (CV) and methyl orange (MO) from textile wastewater. The adsorption capacity of TKC-Ni 0 NPs was improved by incorporating the functional moieties of nickel nanoparticles on the treated kaolin clay structure using the experimental data from the kinetics, isotherm, thermodynamics, and reusability study. The crystalline structures, functional groups, and morphological characteristics of TKC, Ni 0 NPs, and TKC-Ni 0 NPs were analyzed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and high-resolution scanning electron microscopy (HRSEM). The point of zero charge pH on the surface of the TKC-Ni 0 NPs was evaluated as 4.5. The adsorptive removal of CV and MO was explored at solution pH, contact time, adsorbent dosage, initial CV/MO concentration, and temperature. Maximum adsorption capacities of 802.56 and 812.28 mg/g were reported for both CV and MO using TKC-Ni 0 NPs at the optimal solution pH of 6 for CV and 4 for MO, contact time of 60 min, adsorbent dosage of 25 mg/L, initial CV/MO concentration of 100 mg/L, and temperature of 313 K. Remarkably, TKC-Ni 0 NPs exhibited favorable behavior for the adsorption of MO and CV in the presence of both cationic and anionic coexisting ions. The reusability study showed over 92.00 and 94.00% effectiveness for CV and MO even after 10 cycles, respectively, which holds great promise for industrial use. A pseudo-second-order kinetic model effectively suited the adsorption kinetics, implying that the adsorption process is chemisorption controlled. Among the explored isotherm models, the Langmuir isotherm model exhibited the best fit for the experimental data. Thermodynamic analysis indicated that the adsorption is endothermic and spontaneous on the adsorbent surface. Consequently, a cost-effective, versatile, and stable biobased composite with significant potential for industrial wastewater treatment was successfully developed.

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Section: Resultsmentioning

confidence: 99%

Section: Influence Of Contact Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Ike,

Babayemi,

Egbosiuba

et al. 2024

ACS Appl. Eng. Mater.

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“… There is no conclusion at the end of the manuscript, is that the journal format? I recommend the following references must be added to enrich the manuscript 1 - 18 . …”

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Adsorption of Pb (II) ions on variable charge oxidic calcined substrates with chemically modified surface

Prato,

Millán,

Rangel

et al. 2024

F1000Res

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Background The paper describes lead ion adsorption on variable charge oxidic calcined substrates with chemically modified surfaces. Amphoteric oxides of iron, aluminum, titanium, and manganese, change their surface electric charge after acid or alkaline treatment, letting cationic or anionic adsorption reactions from aqueous solutions. This property allows using them as adsorbing substrate for heavy metals retention in water treatment systems. Methods Substrate was prepared by extruding cylindrical strips from a saturate paste of the oxidic lithological material-OLM; dries it up and thermally treated by calcination. The study was performed by triplicated trial, on batch mode, using 2 grams samples of treated with NaOH 0.1N and non-treated substrate. Lead analysis was performed by AAS-GF. Freundlich and Langmuir models were used to fit results. Comparing differential behavior between treated and non-treated substrates showed the variable charge nature of the OLM. Results Results show L-type isotherms for the adsorption of Pb(II) ions on the activated substrate, suggesting good affinity between Pb(II) ions and OLM’s surface. Average value of adsorption capacity (K) for activated substrate (1791.73±13.06), is around four times greater than the non-activated substrate (491.54±31.97), during the adsorption reaction, 0.35 and 0.26 mmolH+ of proton are produced on the activated and non-activated substrate respectively using a 1 mM Pb(II) solution and 72.2 and 15.6 mmolH+ using a 10 mM Pb(II) solution. This acidification agrees with the theoretic model of transitional metals chemisorption on amphoteric oxides, present in lithological material used for the preparation of adsorbent substrates, confirming the information given by the L-type isotherms. Conclusions Results suggest that these variable charge oxidic adsorbent substrate show great potential as an alternative technique for water treatment at small and medium scale using granular filtration system. The easiness and low price make them suitable to apply in rural media where no treating water systems is available.

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Synthesis of a hybrid phase FeCoWO₄/g‐C₃N₄ heterojunction composite for enhanced photocatalytic degradation of MB under visible light

Kandasamy,

Vasudevan,

Thangavelu

et al. 2023

ChemistrySelect

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Recently, the environmental contamination caused by toxic dyes has posed a severe threat to human health. Semiconductor‐based photocatalysis is gaining a lot of attention due to its potential applications in environmental remediation. Herein, photocatalytic reactive FeCoWO4/g‐C3N4 nanocomposites were prepared through a facile route hydrothermal process. The bare FeCoWO4, g‐C3N4 and FeCoWO4/g‐C3N4 nanocomposites possess specific features, including reactive surface sites, improved efficiency of charge transfer, and accelerated separation of photogenerated electron‐hole pairs. As a result, the photocatalytic activity towards methylene blue dye (MB) degradation activity of FeCoWO4/g‐C3N4 nanocomposites is significantly improved. Thus, photocatalysts exhibited the highest degradation activities and could remove 91.5 % of MB dye within 120 minutes of visible light irradiation. The enhanced photocatalytic activity with excellent recyclability shows potential for the practical application of FeCoWO4/g‐C3N4 nanocomposites for wastewater treatment.

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Effective removal of malachite green from local dyeing wastewater using zinc-tungstate based materials

Cited by 17 publications

References 82 publications

Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Adsorption of Pb (II) ions on variable charge oxidic calcined substrates with chemically modified surface

Synthesis of a hybrid phase FeCoWO₄/g‐C₃N₄ heterojunction composite for enhanced photocatalytic degradation of MB under visible light

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Effective removal of malachite green from local dyeing wastewater using zinc-tungstate based materials

Cited by 17 publications

References 82 publications

Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

Adsorption of Pb (II) ions on variable charge oxidic calcined substrates with chemically modified surface

Synthesis of a hybrid phase FeCoWO4/g‐C3N4 heterojunction composite for enhanced photocatalytic degradation of MB under visible light

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Product

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Synthesis of a hybrid phase FeCoWO₄/g‐C₃N₄ heterojunction composite for enhanced photocatalytic degradation of MB under visible light