Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2210
Title: Capacity and mechanism of phenol adsorption on lignite
Authors: Polat, Hürriyet
Molva, Murat
Polat, Mehmet
Keywords: Phenols
Adsorption
Lignite
Water molecules
Oxidation
Issue Date: Jul-2006
Publisher: Elsevier Ltd.
Source: Polat, H., Molva, M., and Polat, M. (2006). Capacity and mechanism of phenol adsorption on lignite. International Journal of Mineral Processing, 79(4), 264-273. doi:10.1016/j.minpro.2006.03.003
Abstract: A raw lignitic coal from Soma, Turkey was investigated to determine its potential as an adsorbent for phenol removal from wastewaters. Kinetic batch tests demonstrated that phenol could be completely removed from solution given sufficient solids loading and reaction time. The adsorption capacity of 10 mg/g obtained with the lignite is low compared to those achievable with activated carbons (around 300 mg/g). However, when normalized for the surface area, the adsorption capacity was much larger for the lignite (1.3 mg/m2) than that generally observed with activated carbons (0.05-0.3 mg/m2). Hydrogen-bonding of the phenolic -OH with the oxygen sites on the lignite surface is the most likely mechanism for adsorption. Though water molecules also have affinity for the same oxygen sites, lateral benzene ring interactions make phenol adsorption energetically more favorable. Since phenol molecules adsorbed in this fashion would project their benzene rings into solution, formation of a second layer through the action of the dispersive π-π interactions between the benzene rings is very likely. Residual water quality with respect to major elements and heavy metals was within acceptable limits defined by the ASTM standards. Dissolution of organic matter from the lignite was also observed to be negligible.
URI: http://doi.org/10.1016/j.minpro.2006.03.003
http://hdl.handle.net/11147/2210
ISSN: 0301-7516
0301-7516
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
2210.pdfMakale213.36 kBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

SCOPUSTM   
Citations

76
checked on Nov 27, 2021

WEB OF SCIENCETM
Citations

76
checked on Nov 27, 2021

Page view(s)

42
checked on Dec 3, 2021

Download(s)

52
checked on Dec 3, 2021

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.