Adsorption isotherm, kinetic and mechanism studies of  2-nitrophenol on sedimentary phosphate

Sebti, Saı̈d M.

doi:10.13171/mjc.4.6/0151123/sebti

Cited by 13 publications

(3 citation statements)

References 22 publications

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“…Several studies have studied the power of apatites for the elimination of heavy metals [Bailliez, et al, 2004 2 and 4. the result found also showed that the Dubinin _Radushkevich isotherm is the best for the description of the adsorption reaction and the intra diffusion model which controls the adsorption kinetics well [Yaacoubi et al, 2015]. Other authors have studied the effect of several parameters on the adsorption of a phenol solution on a phosphate rock activated by nitric acid.…”

Section: Apatitesmentioning

confidence: 96%

“…Simple phenols encompass all substituted hydroxylated phenol core molecules. According to this definition, several phenols belong to this group, namely: chlorophenols [Aktaş and Çeçen, 2007], nitrophenols [Yaacoubi et al 2015], tyrosol, cathecol and methylphenol [El boughdiri et al 2007]. Many industrial activities use phenol as a disinfectant, Plastics and resin manufacturing, in petroleum refining activities as extraction solvent [Rengaraj et al, 2009], which leads to the contamination of industrial wastewater by phenol and its derivatives.…”

Section: Introductionmentioning

confidence: 99%

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A Review on the Adsorption of Phenol Derivatives from Wastewater

Benaddi¹,

Osmane²,

Zidan³

et al. 2023

Ecol. Eng. Environ. Technol.

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Several environmental companies consider phenols compounds to be very dangerous pollutants because they are highly toxic and non-biodegradable, notably their high toxicity in water. For this reason, several processes have been studied by researchers to understand the mechanisms of elimination of phenolic compounds. Adsorption remains the best technique due to its characteristics, in fact, it is non-destructive and simple to use as well as have more other advantages, such as practicality and efficiency and low cost, Therefore, these methods need to be widely developed on an industrial scale to remove phenol derivatives and achieve wastewater quality in accordance with standards. On the other hand, the development of these adsorption methods is highly dependent on new research on materials from abundant natural resources, namely apatites or biomaterials.

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Section: Apatitesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

A Review on the Adsorption of Phenol Derivatives from Wastewater

Benaddi¹,

Osmane²,

Zidan³

et al. 2023

Ecol. Eng. Environ. Technol.

View full text Add to dashboard Cite

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“…The diffusion of the intraparticles is not the only rate control process. Other adsorption and diffusion mechanisms have been described in various research papers [27,49].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Untitled

2017

ijs

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In the present investigation, the synthesis of copper nanoparticles from green tea was attempted and investigated for its capacity to adsorb drugs (Ciprofloxacin). The copper nanoparticles (Cu-NPs) were characterized by different techniques of analysis such as scanning electron microscopy (SEM) images, atomic force microscope (AFM), blumenauer-emmer-teller (BET), fourier transform infrared (FTIR) spectroscopy, and zeta potentials techniques. Cu-NPs lie in the mesoporous material category with a diameter in the range of 2-50 nm. The aqueous solution was investigated for the removal of ciprofloxacin (CIP) with green tea-synthesized Cu-NPs. The results showed that ciprofloxacin efficiency depends on initial pH (2.5-10), CIP (2mg/L-15mg / L) dose, temperature (20 ° C-50 ° C); time (0-180 min) and Cu-NP dose (0.1g /L-1g /L). Spherical nanoparticles with an average size of 47nm and a surface area of 1.6562m 2 /g were synthesized. The batch experiment showed that 92% of CIP 0.01 mg/L were removed at a maximum adsorbent dose of 0.75 g/L, pH 4, 180 min, and an initial 1:1 rate (w / w) of CIP: Cu-NPs. Kinetic adsorption models and ciprofloxacin removal mechanisms were examined. The kinetic analysis showed that adsorption is a physical adsorption system with activation energy of 0.8409 kJ.mol -1 . A pseudo-first-order model is preferred for the kinetic removal after the physically diffusing process due to the low activation energy of 13.221kJ.mol -1 . On the other hand, Langmuir, Freundlich, Temkin, and Dubinin isotherm models were also studied; the equilibrium data were best fitted with Langmuir and Dubinin isotherm models with maximum adsorption capacity of 5.5279, and 1.1069 mg/g, respectively. The thermodynamic values of ∆G 0 were -0.0166, -0.0691, -4.1084, and -0.7014 kJ/mol at 20, 30, 40, and 50 ° C, respectively. The values of ΔH 0 and ΔS 0 were 18.8603 kJ/mol and 0.0652kJ/mol.k, respectively. These values showed spontaneous and endothermic sorption. The presence of the CIP concentration in aqueous media was identified by UV-analysis.

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Chitin-based magnetic composite for the removal of contaminating substances from aqueous media

Самойлова

Krayukhina

2020

Russ Chem Bull

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A method of obtaining multipurpose magnetic chitin, which combines the magnetic properties of magnetite and the adsorption properties of polysaccharide, was proposed. The possibility of using chitin-(CT) and chitosan (CS)-containing magnetic composites for the adsorption of inorganic ions Co II and Cr VI and organic substances (2-and 4-nitrophenols) from aqueous media was analyzed. It was shown that the adsorption capacity of magnetic chitin with respect to Co II and Cr VI ions reached 41 mg g -1 and 15 mg g -1 , respectively. The maximum adsorption capacity for 4-nitrophenol (19 mg g -1 per CT-containing magnetic composite or 56 mg g -1 per chitin component) was about three times higher than for 2-nitrophenol. The obtained adsorbent Fe 3 O 4 /CT is environmentally friendly and reusable.

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Adsorption isotherm, kinetic and mechanism studies of 2-nitrophenol on sedimentary phosphate

Cited by 13 publications

References 22 publications

A Review on the Adsorption of Phenol Derivatives from Wastewater

A Review on the Adsorption of Phenol Derivatives from Wastewater

Untitled

Chitin-based magnetic composite for the removal of contaminating substances from aqueous media

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