Removal of organophosphorus insecticides from aqueous solution by adsorption on microporous pillared clays and mesoporous alumina aluminum phosphates
Φόρτωση...
Ημερομηνία
Συγγραφείς
Sakellarides, T. M.
Petrakis, D. E.
Pomonis, P. J.
Albanis, T. A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Taylor & Francis
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Environmental Technology
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Al-pillared montmorillonite (ecaza), Fe-Al-pillared montmorillonite (ecfaza) and mesoporous alumina aluminum phosphates (AAPs) were contacted with aqueous solutions of organophosphorus insecticides, ethyl parathion, methyl parathion, fenitrothion and fenthion, at a concentration ranging between 1 and 10 mg l(-1), in batch equilibrium experiments, in order to determine their adsorption properties. The removal of organophosphorus compounds by the adsorbents increased in the following order: methyl parathion<fenitrothion<fenthion<ethyl parathion. In the case of ethyl parathion, the more lipophilic insecticide, the increased affinity allowed adsorption to occur much more efficiently than in the case of other compounds. At equilibrium ecaza montmorillonite adsorbed 96.4% of ethyl parathion, 92.3% of fenthion, 92.3% of fenitrothion and 87.6% of methyl parathion. The adsorption of selected organophosphorus insecticides on mesoporous AAPs was much less pronounced compared to the two clays but increased with the ratio of P/A1, as the surface acidity of those solids also increased. The AAP mixture with a ratio P/Al=0.6 adsorbed 81% of ethyl parathion, 83.1% of fenthion, 39.8% of fenitrothion and 61.4% of methyl parathion. The amounts of insecticides decomposed during the treatment increased in AAPs after 24 hours and especially in those with a higher P/Al ratio (=0.6) and reach 70.5% for ethyl parathion, 59.2% for fenthion, 32.5% for fenitrothion and 54.8% for methyl parathion.
Περιγραφή
Λέξεις-κλειδιά
insecticides, pillared clays, alumina aluminum phosphates, removal, adsorption, catalyzed-hydrolysis, surface microlayer, methyl parathion, pesticides, decomposition, suspensions, residues, toxicity, greece, system
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000083352700003
http://www.tandfonline.com/doi/pdf/10.1080/09593332008616900
http://www.tandfonline.com/doi/pdf/10.1080/09593332008616900
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