Natural Sawdust as Adsorbent for the Eriochrome Black T Dye Removal from Aqueous Solution

Akhouairi, Siham; Ouachtak, Hassan; Addi, Abdelaziz Aït; Jada, Amane; Douch, J.

doi:10.1007/s11270-019-4234-6

Cited by 71 publications

(23 citation statements)

References 48 publications

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“…After separation, the final pH of each solution was measured quickly. pH PZC corresponds to the net electrical neutrality of the adsorbent obtained from the intersection point by plotting

[ 66 ].…”

Section: Methodsmentioning

confidence: 99%

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Phosphoric Acid Activated Carbon from Melia azedarach Waste Sawdust for Adsorptive Removal of Reactive Orange 16: Equilibrium Modelling and Thermodynamic Analysis

et al. 2020

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Waste wood biomass as precursor for manufacturing activated carbon (AC) can provide a solution to ever increasing global water quality concerns. In our current work, Melia azedarach derived phosphoric acid-treated AC (MA-AC400) was manufactured at a laboratory scale. This novel MA-AC400 was tested for RO16 dye removal performance as a function of contact time, adsorbent dosage, pH, temperature and initial dye concentration in a batch scale arrangement. MA-AC400 was characterized via scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, dynamic light scattering (DLS) and fluorescence spectroscopy. MA-AC400 is characterized as mesoporous with BET surface area of 293.13 m2 g−1 and average pore width of 20.33 Å. pHPZC and Boehm titration confirm the acidic surface charges with dominance of phenolic functional groups. The average DLS particle size of MA-AC400 was found in the narrow range of 0.12 to 0.30 µm and this polydispersity was confirmed with multiple excitation fluorescence wavelengths. MA-AC400 showed equilibrium adsorption efficiency of 97.8% for RO16 dye at its initial concentration of 30 mg L−1 and adsorbent dose of 1 g L−1. Thermodynamic study endorsed the spontaneous, favorable, irreversible and exothermic process for RO16 adsorption onto MA-AC400. Equilibrium adsorption data was better explained by Langmuir with high goodness of fit (R2, 0.9964) and this fitness was endorsed with lower error functions. The kinetics data was found well fitted to pseudo-second order (PSO), and intra-particle diffusion kinetic models. Increasing diffusion constant values confirm the intraparticle diffusion at higher RO16 initial concentration and reverse was true for PSO chemisorption kinetics. MA-AC400 exhibited low desorption with studied eluents and its cost was calculated to be $8.36/kg.

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“…After separation, the final pH of each solution was measured quickly. pH PZC corresponds to the net electrical neutrality of the adsorbent obtained from the intersection point by plotting

[ 66 ].…”

Section: Methodsmentioning

confidence: 99%

“…These mixtures were sealed and agitated at 150 rpm for 24 h under 30 • C. After separation, the final pH of each solution was measured quickly. pH PZC corresponds to the net electrical neutrality of the adsorbent obtained from the intersection point by plotting pH i vs. ∆pH or pH f − pH i [66].…”

Section: Ph Pzc Determination and Boehm Titrationmentioning

confidence: 99%

Phosphoric Acid Activated Carbon from Melia azedarach Waste Sawdust for Adsorptive Removal of Reactive Orange 16: Equilibrium Modelling and Thermodynamic Analysis

et al. 2020

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“…The present adsorbent has a performance capacity to remove EBT and MB dyes from aqueous solution compared to other previous studies in the literature. Previous studies used biomass adsorbents for EBT removal as Peanut shell (40.81 mg g -1 ) [32], sawdust (40.69 mg g -1 ) [33] and Polyvinyl Alcohol/Starch/ZSM 5 Zeolite Membrane (16 mg g -1 ) [34]. Also, many adsorbents from waste agriculture were used For MB removals, such as olive stones (107.4 mg g -1 ) [35], Apricot Stone Activated Carbon (88.50 mg g -1 ) [36], and biochar derived from menthe plant (86.96 mg g -1 ) [9].…”

Section: ) Adsorption Isothermmentioning

confidence: 99%

Biochar from Empty Date Fruit Bunch as an Adsorbent to Remove Eriochrome Black T and Methylene Blue from Aqueous Solution

Bella

Bendaikha

2022

App. Envi. Res.

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Date fruit has a significant role in Sahara countries' economies. In this study, a bunch of empty dates waste was used to produce biochar, which will be used to adsorb Eriochrome black T (EBT) and methylene blue (MB) dyes from aqueous solution. The dates bunch was washed, dried, and ground into small particles. Then it was heated in a muffle furnace at 850 °C. The biochar from empty date bunches (BEDB) characteristics before and after adsorption was determined by using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. The experiment has used different parameters notably initial concentration (25 – 100 mg L-1), contact time (0 – 90 min), BEDB amount (0.01 – 0.05 g), and different solutions pH (2 – 10) in batch adsorption. This investigation has shown that Langmuir and pseudo-second-order isotherm models were well-fitted than Freundlich and pseudo-first-order. The maximum capacity of adsorption was 58.47 and 80.64 mg g-1 for EBT and MB removal, respectively at 25°C. The results obtained show that BEDB sorbent has an important adsorption capacity of dyes removal and has a performance to eliminate EBT and MB dyes from aqueous solution.

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“…This result confirms the assumption that the process is primarily physical adsorption. Other works reported the same behavior, considering that interaction of Eriochrome black with adsorbents is from electrostatically nature [73].…”

Section: Thermodynamic Studiesmentioning

confidence: 52%

Eriochrome black adsorption on yellow passion fruit peel (Passiflora edulis f. Flavicarpa) treated with sodium hydroxide and nitric acid: study of adsorption isotherms, kinetic models and thermodynamic parameters

et al. 2019

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The yellow passion fruit peel was used for Eriochrome black adsorption studies in aqueous solution in such a way as to propose a use for this by-product of the Brazilian fruit juice industry. The passion fruit peel was treated with nitric acid and sodium hydroxide to simulate pectin removal conditions and provide surface modifications that enhance adsorption. The kinetics and equilibrium experiments were completed in batch, at room temperature and contact times from 15 to 240 min. The thermodynamic studies were accomplished through a 298-343 K temperature variation. The adsorption capacities ranged from 196 to 303 mg/g, with the NaOH-treated sample having the highest adsorption capacity at all temperatures. This result points out that the passion fruit peel is a promising adsorbent compared with other low-cost adsorbents. The adsorption process is exothermic and occurs with decreasing entropy. The spontaneity of the process is low except for the sample treated with NaOH. Gibbs free energies were − 1.70 kJ/mol for the untreated sample, − 2.55 kJ/ mol for the HNO3-treated sample, and − 6.03 kJ/mol for the NaOH-treated sample at room temperature. The thermodynamic studies have shown that Eriochrome black adsorption on passion fruit peel is a physical process. The process kinetics may be described by the pseudo-second-order model, with diffusion limitations in the solution. The results indicate that NaOH-treated passion fruit peel is a promising adsorbent for Eriochrome black and may be used to adsorb other acid dyes in aqueous medium.Keywords Passion fruit peel · Acid dye adsorption · Low-cost adsorbents · Fruit peel treatment · Modified passion fruit peel · Isotherm comparison Mathematical Subject Classification 92E99 JEL Classification Q250 and Q530

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Natural Sawdust as Adsorbent for the Eriochrome Black T Dye Removal from Aqueous Solution

Cited by 71 publications

References 48 publications

Phosphoric Acid Activated Carbon from Melia azedarach Waste Sawdust for Adsorptive Removal of Reactive Orange 16: Equilibrium Modelling and Thermodynamic Analysis

Phosphoric Acid Activated Carbon from Melia azedarach Waste Sawdust for Adsorptive Removal of Reactive Orange 16: Equilibrium Modelling and Thermodynamic Analysis

Biochar from Empty Date Fruit Bunch as an Adsorbent to Remove Eriochrome Black T and Methylene Blue from Aqueous Solution

Eriochrome black adsorption on yellow passion fruit peel (Passiflora edulis f. Flavicarpa) treated with sodium hydroxide and nitric acid: study of adsorption isotherms, kinetic models and thermodynamic parameters

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