Chemical and Structural Properties of Jordanian Zeolitic Tuffs and Their Admixtures with Urea and Thiourea: Potential Scavengers for Phenolics in Aqueous Medium

Native Jordanian zeolitic tuffs, rich in phillipsite, were treated with urea and thiourea. The chemical and structural properties of the tuffs and their urea and thiourea admixtures were studied using SEM, XRF, XRD, and FTIR techniques, and their adsorption capacities were estimated by the methylene...

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Veröffentlicht in:Journal of Colloid and Interface Science 1999-08, Vol.216 (2), p.348-359
Hauptverfasser: Yousef, Rushdi I, Tutunji, Maha F, Derwish, Ghazi A.W, Musleh, Salem M
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container_end_page 359
container_issue 2
container_start_page 348
container_title Journal of Colloid and Interface Science
container_volume 216
creator Yousef, Rushdi I
Tutunji, Maha F
Derwish, Ghazi A.W
Musleh, Salem M
description Native Jordanian zeolitic tuffs, rich in phillipsite, were treated with urea and thiourea. The chemical and structural properties of the tuffs and their urea and thiourea admixtures were studied using SEM, XRF, XRD, and FTIR techniques, and their adsorption capacities were estimated by the methylene blue method. The urea and thiourea treatment has not affected the mineral constitution of the tuffs. The results revealed that urea and thiourea were linked by hydrogen bonding through the NH2 moiety to the zeolite substrate, with urea showing the strongest effect. Experiments were carried out to investigate the possible use of the prepared materials for the removal of phenol and chlorinated phenols from aqueous solutions. Although thiourea caused a reduction in the relative surface area, both urea and thiourea admixtures were more effective than the free zeolitic tuff in the removal of phenol and chlorinated phenols from water, with urea admixture displaying the largest removal capacity.
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source Elsevier ScienceDirect Journals Complete
subjects ADSORPTION
CHEMICAL PROPERTIES
Chemistry
CHLORINATED AROMATIC HYDROCARBONS
ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ENVIRONMENTAL SCIENCES
Exact sciences and technology
General and physical chemistry
JORDAN
PHENOLS
Solid-liquid interface
SORPTIVE PROPERTIES
Surface physical chemistry
thiourea
TUFF
urea
WASTE WATER
WATER TREATMENT
zeolitic tuff
title Chemical and Structural Properties of Jordanian Zeolitic Tuffs and Their Admixtures with Urea and Thiourea: Potential Scavengers for Phenolics in Aqueous Medium
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