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

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

Content Provider	Semantic Scholar
Author	Sebti, Said
Copyright Year	2015
Abstract	Sedimentary phosphate (SP) was used as an adsorbent for the removal of 2-nitrophenol from aqueous solutions in an attempt to investigate (the feasibility of) its application (to) in wastewater purification. The adsorbent was characterized by X-ray diffraction (XRD), IR spectroscopy, Fluorescence X and BET. The results indicated that the SP (was) is francolite (Ca 10 (PO 4 ,CO 3 ) 6 F 2 ) and mesoporous. The effect of the adsorption time and the pH of the solution were studied. The pseudo-first-order, pseudo-second-order and intraparticle diffusion models were used to fit adsorption data in the kinetic studies. The equilibrium isotherms were determined using the Langmuir, Freundlich and Dubinin-Radushkevich models. The results show that the Dubinin-Radushkevich isotherm had better agreement with the 2-nitrophenol adsorption on SP with a correlation coefficient of 0.98, an equilibrium adsorption capacity of 633 mg. g -1 and a corresponding contact time of 2 h. The results imply that intraparticle diffusion could be summarized as the basic rate-controlling mechanisms during 2-nitrophenol adsorption on SP.
Starting Page	289
Ending Page	296
Page Count	8
File Format	PDF HTM / HTML
DOI	10.13171/mjc.4.6/0151123/sebti
Alternate Webpage(s)	http://www.medjchem.com/index.php/medjchem/article/download/314/270
Alternate Webpage(s)	http://ojs.medjbio.com/index.php/medjchem/article/download/314/pdf
Alternate Webpage(s)	https://doi.org/10.13171/mjc.4.6%2F0151123%2Fsebti
Volume Number	4
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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