Development and Characterization of Conjugated Polyaniline/Co-doped ZnO Nanocomposites for Enhanced Dye Oxidation from Wastewater

Tahoun, Belal; Mansour, Shehab A.; Tony, Maha A.; farag, sayed

doi:10.21608/erjm.2022.104420.1120

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…In sum, the unit RH dose resulted in the aggregation and crowding of the adsorption medium. Thus, the available surface and active sites for adsorption then declined [53]. This adsorption trend and its relation to the adsorption dose was previously reported in the literature using bioadsorbents for aqueous polluted dye wastewater treatment [54].…”

Section: Evaluation Of Rh-dose Effect On Adsorption Uptakesupporting

confidence: 77%

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Extractability of Rice Husk Waste Using Green Gamma Radiation for Dye Elimination in Laboratory-Scale Sorption System: Equilibrium Isotherm and Kinetic Analysis

et al. 2023

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Nowadays, the use of natural materials and especially “waste” valorization has evolved and attracted the wide attention of scientists and academia. In this regard, the use of rice husk (RH) powder as a naturally abundant and cheap byproduct material is gaining superior attention. However, improving the physicochemical properties of such RH is still under research. In the current investigation, the modification of rice husk (RH) via γ-irradiation has shown to be a promising green tool to meet such a need. Clean, prepared, powdered RH samples were subjected to various γ-radiation doses, namely 5, 10, 15 and 25 kGy, and the corresponding samples were named as RH-0, RH-5, RH-10, RH-15, RH-15 and RH-25. Then, the samples were characterized via scanning electron microscopy (SEM). After irradiation, the samples showed an increase in their surface roughness upon increasing the γ-radiation up to 15 kGy. Furthermore, the sorption capacity of the irradiated RH samples was investigated for eliminating Urolene Blue (UB) dye as a model pharmaceutical effluent stream. The highest dye uptake was recorded as 14.7 mg/g, which corresponded to the RH-15. The adsorption operating parameters were also investigated for all of the studied systems and all adsorbents showed the same trend, of a superior adsorption capacity at pH 6.6 and high temperatures. Langmuir and Freundlich isotherm models were also applied for UB adsorption and an adequate fitted isotherm model was linked with Langmuir fitting. Moreover, the pseudo-second-order kinetic model provided the best fit for the adsorption data. Experimental assays confirmed that the UB dye could be successfully eradicated feasibly from the aqueous stream via a sustainable green methodology.

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Section: Evaluation Of Rh-dose Effect On Adsorption Uptakesupporting

confidence: 77%

“…According to the literature [52,53], pH is categorized as a significant variable that affects the adsorption uptake tendency. Based on this, for the aqueous stream containing UB dye, pH was altered and the adsorbent RH dose was then added to evaluate the effect of pH variation on the RH uptake.…”

Section: Evaluation Of Ph Effect On Adsorption Uptakementioning

confidence: 99%

Extractability of Rice Husk Waste Using Green Gamma Radiation for Dye Elimination in Laboratory-Scale Sorption System: Equilibrium Isotherm and Kinetic Analysis

et al. 2023

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“…Besides, more carbamate loads on the active sites of the alum sludge/magnetite nanoparticles may result in a reduction in the amount of effective ˙OH radicals. Thabet et al 52 and Tahoon et al 53 recorded a similar trend in oxidizing reactive dye and Tony MA, Lin L.-S. 54 in treating polymer loaded organic wastewater effluents by a Fenton reaction besides Malakootian et al 55 in treating ciprofloxacin and Nozari et al 56 in the removal of dibutyl phthalate from aqueous media.…”

Section: Resultsmentioning

confidence: 78%

Construction of a hetero-junction recyclable composite photocatalyst from aluminum-based waste/magnetite for efficient carbamate insecticide oxidation

Thabet

Fouad

Sherbiny

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…Also, studies have shown magnetized silicate adsorbents to have excellent hydrophilicity, chemical stability within high pH and silanol groups (Lai et al 2016;Zhang et al 2013) which influences their fitness for the removal of pollutants. Not only this, co-precipitation of silicates with magnetite improves its temperature stability, surface area, oxidation strength and superparamagnetic attributes (Popoola 2020;Tahoun et al 2022). With reference to cited literatures and to the best of authors' knowledge, previous studies rarely considered using SiO 2 nanoparticles synthesized from rice husk and co-precipitated with magnetite and TiO 2 for photocatalytic degradation of dyes in solution.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of methylene blue dye by magnetized TiO2-silica nanoparticles from rice husk

Popoola,

Yusuff,

Adejare

et al. 2024

Appl Water Sci

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In this current study, magnetized TiO2-supported SiO2 nanoparticles, synthesized from rice husk, was applied as a photocatalyst to degrade methylene blue dye (MBD) in aqueous solution using LED lamp as light source. The effects of MBD initial concentration, TiO2 loading, pH and illumination time on the degradation efficiency of the photocatalyst on MBD was investigated using Box–Behnken design as the experimental design tool. Photocatalyst was characterized by Fourier transform infrared, scanning electron microscopy, energy-dispersive X-ray, thermogravimetric analysis and Brunauer–Emmett–Teller. At optimum predicted point where MBD initial concentration, TiO2 loading, pH and illumination time were 10 ppm, 15%, 6 and 75 min, respectively, the predicted and experimental percentage of MBD removed were 97.66% and 96.89%, respectively. Correlation coefficient and ANOVA justified high significance of the developed model for prediction. Experimental data fitted excellently into pseudo-second-order kinetic model. The temperature effect revealed optimum MBD photocatalytic degradation at 50 °C by TiO2/mRH-SNP. Characterization revealed the effects of magnetization and TiO2 addition on the synthesized SiO2 nanoparticles from rice husk. In conclusion, magnetized TiO2-silica nanoparticles from rice husk could be effectively used to degrade MBD in solution.

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Development and Characterization of Conjugated Polyaniline/Co-doped ZnO Nanocomposites for Enhanced Dye Oxidation from Wastewater

Cited by 7 publications

References 33 publications

Extractability of Rice Husk Waste Using Green Gamma Radiation for Dye Elimination in Laboratory-Scale Sorption System: Equilibrium Isotherm and Kinetic Analysis

Extractability of Rice Husk Waste Using Green Gamma Radiation for Dye Elimination in Laboratory-Scale Sorption System: Equilibrium Isotherm and Kinetic Analysis

Construction of a hetero-junction recyclable composite photocatalyst from aluminum-based waste/magnetite for efficient carbamate insecticide oxidation

Photocatalytic degradation of methylene blue dye by magnetized TiO2-silica nanoparticles from rice husk

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