Removal of diuron and amitrole from water under static and dynamic conditions using activated carbons in form of fibers, cloth, and grains

This study investigated the removal of the herbicides diuron and amitrole from water under static and dynamic conditions using different activated carbons in the form of fibers, cloth, and grains. In all cases, there was much greater adsorption of diuron than of amitrole due to the lower solubility,...

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Bibliographic Details
Published in:Water research (Oxford) 2007-07, Vol.41 (13), p.2865-2870
Main Authors: López-Ramón, M.V., Fontecha-Cámara, M.A., Álvarez-Merino, M.A., Moreno-Castilla, C.
Format: Article
Language:English
Subjects:
activated carbon
adsorbents
Adsorption
amitrole
Amitrole - chemistry
Amitrole adsorption isotherms
Amitrole breakthrough curves
Applied sciences
Carbon - chemistry
diuron
Diuron - chemistry
Diuron adsorption isotherms
Diuron breakthrough curves
dynamic testing
Exact sciences and technology
fabrics
grains
groundwater contamination
herbicide residues
Herbicides - chemistry
Hydrogen-Ion Concentration
hydrophobicity
materials testing
mechanism of action
optimization
Other industrial wastes. Sewage sludge
physicochemical properties
pollutants
Pollution
porosity
solubility
sorption isotherms
surface area
Temperature
textile fibers
Wastes
Water - chemistry
Water Pollutants, Chemical - chemistry
Water Pollution, Chemical - prevention & control
Water Purification - instrumentation
Water Purification - methods
Water treatment and pollution
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Summary:This study investigated the removal of the herbicides diuron and amitrole from water under static and dynamic conditions using different activated carbons in the form of fibers, cloth, and grains. In all cases, there was much greater adsorption of diuron than of amitrole due to the lower solubility, greater hydrophobicity, and larger dipolar moment of the former. The activated carbon cloth was the best adsorbent for diuron under dynamic conditions because it had the largest mesopore volume, water-accessible pore volume, and surface area. However, the best adsorbent for amitrole under dynamic conditions was the granular activated carbon due to its higher surface basicity. Comparisons using the best adsorbent for each herbicide showed that diuron was removed by the activated carbon more efficiently compared with amitrole under both dynamic and static conditions.
ISSN:0043-1354
1879-2448
DOI:10.1016/j.watres.2007.02.059