NDLI: Kinetics, mechanism, isotherm and thermodynamic studies of liquid phase adsorption of Pb2+ onto wood activated carbon supported zerovalent iron (WAC-ZVI) nanocomposite

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Kinetics, mechanism, isotherm and thermodynamic studies of liquid phase adsorption of Pb2+ onto wood activated carbon supported zerovalent iron (WAC-ZVI) nanocomposite

Content Provider	Semantic Scholar
Author	Dada, Adewumi Oluwasogo Adekola, Folahan A. Odebunmi, E. O.
Copyright Year	2017
Abstract	AbstractThe kinetics, mechanism, isotherm, and thermodynamics of adsorption of Pb2+ onto wood-activated carbon-supported zerovalent iron (WAC-nZVI) nanocomposite was successfully studied. WAC-nZVI was characterized by a combination of spectroscopic and analytical techniques (BET, PZC, FTIR, SEM, and EDX). BET surface area was 101.50 m2/g and BJH Adsorption average pore diameter 116.73 A. The adsorption of Pb2+ studied in batch process depends on various operational parameters ranging from effect of pH to ionic strength. Kinetics data were best described by pseudo-second-order model based on high initial adsorption rate, h2 (166.67 mgg−1 min−1) and correlation coefficient (R2 > 0.99). The mechanism was controlled by both external and intraparticle diffusion models confirmed by Bangham and Boyd models. Equilibrium data were fitted to seven isotherm models. The Langmuir monolayer adsorption capacity (77.52 m2/g) surpassed those previously investigated for adsorption of Pb2+ onto nanoadsorbents. Validity of k...
Starting Page	1351653
Ending Page	1351653
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1080/23312009.2017.1351653
Alternate Webpage(s)	https://www.cogentoa.com/article/10.1080/23312009.2017.1351653.pdf
Alternate Webpage(s)	https://doi.org/10.1080/23312009.2017.1351653
Volume Number	3
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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