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| Titel |
Application of Box-Behnken design for the removal of two organophosphorus pesticides by used Tea leaves |
| VerfasserIn |
M. Azharul Islam, Vasilios Sakkas, Triantafyllos A. Albanis |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250075013
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| Zusammenfassung |
| Removal of two organophosphorus pesticides bromophos methyl [BM: O, O- dimethyl – O -
(2, 5-dichloro -4 bromophenyl) phosphorothioate] and quinalphos [QP: O, O-diethyl
O-2-quinoxalinyl phosphorothioate] on used tea leaves were studied by batch equilibration
method. Adsorption isotherms were conformed well to Langmuir for quinalphos and
Freundlich equation for bromophos methyl. The kinetic data fitted well by the pseudo second
order model for both pesticides. Box-Behnken design was successfully employed for
experimental design and analysis of results. The interactions of pH, initial concentration and
adsorbent dose on two pesticides adsorption by used tea leaves were investigated by
this model. The optimum pH, initial concentration and adsorbent dose with their
corresponding removal efficiency were found to be 7.88, 11.94 mg L-1, 0.37g and 100% for
bromophos methyl respectively, for quinalphos 8.72, 6.44 mg L-1, 0.39g and 93.98%
respectively.
Keywords: Box-Behnken; quinalphos; bromophos methyl; Kinetics; used tea leaves |
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