Application of low-cost material for adsorption of dye from aqueous solution

Hamzezadeh, Asghar; Rashtbari, Yousef; Afshin, Shirin; Morovati, Maryam; Vosoughi, Mehdi

doi:10.1080/03067319.2020.1720011

Cited by 67 publications

(24 citation statements)

References 50 publications

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“…Since the BRB concentration in solution was constant at 50 mg/L, as the dosage of ZnONPs was increased, there was a corresponding increase in the active sites, thus accounting for the higher uptake of BRB from solution 62 , 73 , 74 . This in turn resulted in less saturation and less efficient use of the active sites of ZnONPs due to decreasing BRB concentration in solution 5 , 75 . Hence, we utilized ZnONPs dosage of 0.1 g to enable optimum use of the active sites of the adsorbent 68 .…”

Section: Resultsmentioning

confidence: 99%

One-pot synthesis of zinc oxide nanoparticles via chemical precipitation for bromophenol blue adsorption and the antifungal activity against filamentous fungi

Akpomie

Ghosh

Gryzenhout

et al. 2021

Sci Rep

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In this research, zinc oxide nanoparticles (ZnONPs) were prepared via a facile one-pot chemical precipitation approach and applied in the adsorption of bromophenol blue (BRB) and as antifungal agents against the filamentous fungi and plant pathogens; Alternaria alternata CGJM3078, Alternaria alternata CGJM3006 and Fusarium verticilliodes CGJM3823. The ZnONPs were characterized by the UV–Vis, FTIR, XRD, TGA, BET, SEM, TEM, and EDX techniques, which showed efficient synthesis. The characteristics ZnO UV–Vis absorption band was observed at 375 nm, while the XRD showed an average ZnONPs crystalline size of 47.2 nm. The SEM and TEM images showed an irregular shaped and aggregated porous structure of 65.3 nm average-sized ZnONPs. The TGA showed 22.9% weight loss at 800 °C indicating the high thermal stability of ZnONPs, while BET analysis revealed a surface area, pore volume and pore diameter of 9.259 m2/g, 0.03745 cm3/g and 9.87 nm respectively. The Freundlich, pseudo-second-order, and intra-particle diffusion models showed R2 > 0.9494 and SSE < 0.7412, thus, exhibited the best fit to the isotherm and kinetics models. Thermodynamics revealed feasible, endothermic, random, and spontaneous adsorption of BRB onto the synthesized ZnONPs. The antifungal assay conducted depicts strong antifungal activities against all three tested fungi. Noticeably, ZnONPs (0.002–5 mg/mL) showed maximum activities with the largest zone of inhibition against A. alternata CGJM 3006 from 25.09 to 36.28 mm. This was followed by the strain F. verticilliodes CGJM 3823 (range from 23.77 to 34.77 mm) > A. alternata CGJM3078 (range from 22.73 to 30.63 mm) in comparison to Bleach 5% (positive control). Additionally a model was proposed based on the possible underlying mechanisms for the antifungal effect. This research demonstrated the potent use of ZnONPs for the adsorption of BRB and as effective antifungal agents.

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Section: Resultsmentioning

confidence: 99%

One-pot synthesis of zinc oxide nanoparticles via chemical precipitation for bromophenol blue adsorption and the antifungal activity against filamentous fungi

Akpomie

Ghosh

Gryzenhout

et al. 2021

Sci Rep

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show abstract

“…Since the BRB concentration in solution was constant at 50 mg/L, as the dosage of ZnONP was increased, there was a corresponding increase in the active sites, thus accounting for the higher uptake of BRB from solution 56,64,65 . This in turn resulted in less saturation and less e cient use of the active sites of ZnONP due to decreasing BRB concentration in solution 5,66 . Hence, we utilized a ZnONP dosage of 0.1 g to enable optimum use of the active sites of the adsorbent.…”

Section: Brb Uptake On Znonpmentioning

confidence: 99%

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

Akpomie¹,

Ghosh²,

Gryzenhout³

et al. 2020

Preprint

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Zinc oxide nanoparticles (ZnONP) have gained attention in recent years due to their multifunctional uses, potent adsorptive potential and effective antifungal activities. Despite these desirable characteristics, ZnONP has not been used for the adsorption of bromophenol blue (BRB) and tests as antifungal agents against certain important filamentous fungal strains have been limited. In this research, ZnONP was prepared via a facile one-pot synthetic approach and applied in the adsorption of BRB and as an antifungal agent against the filamentous fungi and plant pathogens; Alternaria alternata CGJM3078, Alternaria alternata CGJM3006 and Fusarium verticilliodes CGJM3823. The ZnONP was characterized by the UV, FTIR, XRD, TGA, BET, SEM, TEM, and EDX techniques, which showed efficient synthesis. The characteristics ZnO UV absorption band was observed at 375 nm, while the XRD showed an average ZnONP crystalline size of 47.2 nm. The SEM and TEM images showed an irregular shaped and aggregated porous structure of 65.3 nm average-sized ZnONPs. The Freundlich, pseudo-second-order, and intra-particle diffusion models showed R2 > 0.9494 and SSE < 0.7412, thus, exhibited the best fit to the isotherm and kinetics of adsorption. Adsorption thermodynamics revealed feasible, endothermic, random, and spontaneous adsorption of BRB onto the synthesized ZnONPs. The antifungal assay conducted, depicted strong antifungal activities against all three tested fungal cultures. A model was proposed on what causes this antifungal effect. This research demonstrated the potent use of ZnONP for the adsorption of BRB and as effective antifungal agents.

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“…Due to the presence of numerous hazardous chemicals, discharge of dyes into aquatic bodies without proper purification causes significant health hazards [7][8][9]. e existence of sulfur, heavy metals, nitrates, and naphthol leads to skin irritation, liver damage, or dysfunction of the kidney.…”

Section: Introductionmentioning

confidence: 99%

“…Focuses on specific methods to remove these toxic substances from water sources have been sought. Present treatment methods and technologies include ion-exchange, adsorption, membrane filtration, chemical oxidation, coagulation-flocculation, electrochemical methods, and biological treatments [9,10,[12][13][14][15][16]. e membrane filtration is effective for water recover and reusing, but the investment costs are often too high for small and medium industries [12,15].…”

Section: Introductionmentioning

confidence: 99%

Pilot-Scale Study of Real Domestic Textile Wastewater Treatment Using Cassia fistula Seed-Derived Coagulant

Dao

Ngân

Tran

et al. 2021

Journal of Chemistry

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Plant-derived coagulants have exhibited a good potential in wastewater treatment due to their “green” characteristics, high coagulating-flocculating activity, cost-effectiveness, and biodegradability. Nevertheless, research studies have focused mainly on bench-scale experiments; pilot-scale and full-scale simulations are still limited. Herein, we firstly report a pilot-scale study of real domestic textile wastewater treatment using Cassia fistula coagulant. The material characterizations using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and dynamic light scattering (DLS) revealed that the natural gum extracted from C. fistula seed possessed a rough and irregular surface containing a high molecular weight galactomannan. The bench-scale investigation was initially conducted to determine the optimal pollutant concentration, initial pH, and coagulant dosage in the coagulation-flocculation process. The pilot-scale study revealed that C. fistula coagulant is an effective material for real textile wastewater treatment, showing percentage removal of 93.83% at a volume of 30 L and a coagulant dosage of 1.17 mg·L−1. Coagulation-flocculation using C. fistula seed gum could be an efficient primary wastewater treatment prior to membrane or biological methods to meet Vietnamese environmental standards. The main mechanisms of textile wastewater treatment involve adsorption/bridging interactions via hydrogen bonding and electrostatic attraction between negatively charged carboxylate groups of the coagulant and positively charged pollutants.

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Application of low-cost material for adsorption of dye from aqueous solution

Cited by 67 publications

References 50 publications

One-pot synthesis of zinc oxide nanoparticles via chemical precipitation for bromophenol blue adsorption and the antifungal activity against filamentous fungi

One-pot synthesis of zinc oxide nanoparticles via chemical precipitation for bromophenol blue adsorption and the antifungal activity against filamentous fungi

One-Pot Synthesis of Zinc Oxide Nanoparticle for Bromophenol Blue Adsorption and Its Antifungal Activity Against Filamentous Fungi

Pilot-Scale Study of Real Domestic Textile Wastewater Treatment Using Cassia fistula Seed-Derived Coagulant

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