Preparation of a Porous Clay Heterostructure and Study of its Adsorption Capacity of Phenol and Chlorinated Phenols from Aqueous Solutions

Authors: Arellano-Cárdenas, Sofía; Gallardo-Velázquez, Tzayhrí; Osorio-Revilla, Guillermo; López-Cortez, Ma. del Socorro

Source: Water Environment Research, Volume 80, Number 1, January 2008 , pp. 60-67(8)

Publisher: Water Environment Federation

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Abstract:

A porous clay heterostructure (PCH) from a Mexican clay was prepared and characterized, and its aqueous phenol and dichlorophenols (DCPs) adsorption capacities were studied using a batch equilibrium technique. The PCH displayed a surface area of 305.5 m ²/g, 37.2 Å average porous diameter, and a basal space of 23.2 Å. The adsorption capacity shown by the PCH for both phenol and DCPs from water (14.5 mg/g for phenol; 48.7 mg/g for 3,4-DCP; and 45.5 mg/g for 2,5-DCP) suggests that the PCH has both hydrophobic and hydrophilic characteristics, as a result of the presence of silanol and siloxane groups formed during the pillaring and calcination of the PCH. The values of maximal adsorption capacity for dichlorophenols were higher than those reported for aluminum pillared clays and some inorgano-organo clays and comparable with some ionic exchange resins.

Keywords: clay; porous clay heterostructure; phenol adsorption; dichlorophenols adsorption

Document Type: Research article

DOI: http://dx.doi.org/10.2175/106143007X220653

Publication date: 2008-01-01

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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.
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Preparation of a Porous Clay Heterostructure and Study of its Adsorption Capacity of Phenol and Chlorinated Phenols from Aqueous Solutions

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