Adsorption of basic green 4 onto gasified Glyricidia sepium woodchip based activated carbon: Optimization, characterization, batch and column study

Ahmad, A.; Din, Azam Taufik Mohd; Yahaya, Nasehir Khan E.M.; Khasri, Azduwin; Ahmad, Mohd Azmier

doi:10.1016/j.arabjc.2020.07.002

Cited by 31 publications

(7 citation statements)

References 66 publications

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“…Moreover, from an economic point of view, coffee waste was an effective adsorbent that could be used successfully to remove toxic substances from polluted water. Similar observations were reported for adsorbents based modified agricultural wastes ($10.714/kg) [78], activated carbon derived from gmelina aborea leaves ($42.96/kg) [77], activated carbon derived from glyricidia sepium wood chip ($0.57/kg) [76] and modified ficus carica fiber ($0.2/kg) [79].…”

Section: Cost Estimationsupporting

confidence: 82%

“…Nowadays, locally available, and low cost adsorbents derives from renewable sources is an important topic, and has been gained great interest from technologists and industrial applications. Since, the global activated carbon market accounted for $ 4.12 billion in the year of 2017 and is expected to reach $ 14.21 billion by the year of 2026 [76]. In this study, an alternative adsorbent was obtained from the recycling of coffee solid waste.…”

Section: Cost Estimationmentioning

confidence: 99%

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Economical and Eco-Friendly Adsorbent Derived from Coffee Waste for Efficient Adsorption of Methylene Blue: Characterization, Evaluation and Optimization Studies

Sulyman

Al-Marog

Al-Azabi

et al. 2020

CSIJ

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In this study, treated coffee ground wastes (CGW) was evaluated for adsorption of methylene blue (MB) from contaminated solution using contact time, initial dye concentrations, adsorbent dose, and solution temperature as operational factors. The adsorbent was treated using chemical activation with potassium carbonate (K2CO3), followed by thermomechanical treatment via an extrusion process. The characterization study of the adsorbent was conducted using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) and X-ray fluorescence spectroscopy techniques. The adsorption equilibrium was reached after 30 min for MB and it was observed also that adsorption capacity decreased but percentage removal increased with increases in adsorbent mass. The maximum adsorption capacity of K2CO3-coffee powder was found to be 169.49 mg/g.

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Section: Cost Estimationsupporting

confidence: 82%

Section: Cost Estimationmentioning

confidence: 99%

Economical and Eco-Friendly Adsorbent Derived from Coffee Waste for Efficient Adsorption of Methylene Blue: Characterization, Evaluation and Optimization Studies

Sulyman

Al-Marog

Al-Azabi

et al. 2020

CSIJ

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“…Again, this implies that a much lower energy barrier is to be overcome in the desorption of the BRB loaded ZnONPs during the regeneration of the adsorbent, compared to adsorption processes dominated or controlled by chemisorption. Furthermore, the increasing randomness at the ZnONPs-BRB solution interface was indicated by the positive ∆S o value of 74.02 J/(mol K) 98 . This increasing random interaction at the interface must have enhanced efficient interaction between BRB molecules and the particle pores of ZnONPs, which accounted for the dominant role played by intraparticle diffusion in the overall adsorption process.…”

Section: Resultsmentioning

confidence: 98%

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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“…Again, this implies that a much lower energy barrier is to be overcome in the desorption of the BRB loaded ZnONP during the regeneration of the adsorbent, compared to adsorption processes dominated or controlled by chemisorption. Furthermore, the increasing randomness at the ZnONP-BRB solution interface was indicated by the positive ∆S o value of 74.02 J/molK 86 . This increasing random interaction at the interface must have enhanced e cient interaction between BRB molecules and the particle pores of ZnONP, which accounted for the dominant role played by intraparticle diffusion in the overall adsorption process.…”

Section: Kinetics and Thermodynamics Of Adsorptionmentioning

confidence: 96%

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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Adsorption of basic green 4 onto gasified Glyricidia sepium woodchip based activated carbon: Optimization, characterization, batch and column study

Cited by 31 publications

References 66 publications

Economical and Eco-Friendly Adsorbent Derived from Coffee Waste for Efficient Adsorption of Methylene Blue: Characterization, Evaluation and Optimization Studies

Economical and Eco-Friendly Adsorbent Derived from Coffee Waste for Efficient Adsorption of Methylene Blue: Characterization, Evaluation and Optimization Studies

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

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