Authors: Sabbah, Isam; Rebhun, Menahem

Source: Water Environment Research, Volume 69, Number 5, July/August 1997 , pp. 1032-1038(7)

Publisher: Water Environment Federation

Abstract:

Adsorption-desorption of trichlorophenol (TCP) on calcium montmorillonite (pure clay), prepared montmorillonite-humic complexes, and natural soils were investigated. Adsorption followed a Freundlich-type isotherm between 5 and 30 mg/L of TCP, and linear adsorption isotherms were obtained for equilibrium concentrations up to 7 mg/L. Linear correlations were obtained between sorption constants (K_p) and organic carbon (f_oc) and clay-mineral content (f_m). In the montmorillonite and montmorillonite-humic complex systems, adsorption and desorption isotherms coincided and no hysteresis was observed. Strong hysteresis was observed in adsorption-desorption in natural soils. The different behavior in adsorption-desorption was explained by the different nature of organic matter, its different structure, and interaction with the mineral fraction. Because trichlorophenol is a weak acid, adsorption highly depended on pH and could be predicted by combining the adsorption constant of undissociated TCP and the dissociation constant of phenol-phenolate.

Keywords: ADSORPTION; CLAY; DESORPTION; ORGANIC CARBON; REMEDIATION; SOIL; TRICHLOROPHENOL

Document Type: Research article

DOI: http://dx.doi.org/10.2175/106143097X125731

Publication date: 1997-07-01

More about this publication?

• Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.
  
  Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
• Editorial Board
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Membership Information
• Information for Advertisers
• WEF Bookstore
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Earth and Environmental Sciences ,  General & Civil Engineering ,  Hydraulic & Environmental Engineering
• By this author: Sabbah, Isam ;  Rebhun, Menahem

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers