Removal of herbicides from aqueous solutions by adsorption on Al-pillared clays, Fe-Al pillared clays and mesoporous alumina aluminum phosphates
Φόρτωση...
Ημερομηνία
Συγγραφείς
Konstantinou, I. K.
Albanis, T. A.
Petrakis, D. E.
Pomonis, P. J.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Water Res
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Fractionated Al-pillared (code name AZA) and Fe-Al-pillared (code name FAZA) clays and mesoporous alumina aluminum phosphates (AAPs) were contacted with aqueous, atrazine, propazine, prometryne, propachlor, propanil and molinate solutions at a concentration range of between 1 and 20 mg/l, in batch equilibrium experiments in order to determine their adsorption properties. The pillared clays showed an improved affinity which allowed the adsorption of the studied herbicides to occur much more efficiently than in the case of AAPs. The removed amounts of the studied herbicides by using the pillared clay materials reached 95.3% for atrazine, 92.2% for propazine, 98.5% for prometryne, 60.9% for propachlor, 86.8% for propanil and 70.2% for molinate. The iron substitution in FAZA pillared clay did not show great differences in adsorption capacity. The adsorption of s-triazines on mesoporous AAPs decreased with the alkyl substitution of the lateral chains, thus atrazine was the most adsorbed compound. The removal of propachlor by AAPs decreased with the increase of P/Al ratio. The material with P/Al = 0.4 ratio was more efficient for the removal of molinate and propanil. The amounts of herbicides decomposed during the treatment were higher for AAPs in comparison with those for AZA and FAZA. (C) 2000 Elsevier Science Ltd. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
herbicides, al-pillared clays, fe-al-pillared clays, alumina aluminum phosphates, removal, adsorption, degradation, powdered activated carbon, catalytic activity, atrazine, montmorillonite, sorption, water, decomposition, degradation, desorption, pesticides
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000087929100006
http://ac.els-cdn.com/S0043135400000713/1-s2.0-S0043135400000713-main.pdf?_tid=b9050c5157e3b38ea74ca99693817a70&acdnat=1333023008_390dc213c17195ecb9f31572ef68c668
http://ac.els-cdn.com/S0043135400000713/1-s2.0-S0043135400000713-main.pdf?_tid=b9050c5157e3b38ea74ca99693817a70&acdnat=1333023008_390dc213c17195ecb9f31572ef68c668
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας