Application of statistical design of experiment with desirability function for the removal of organophosphorus pesticide from aqueous solution by low-cost material
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Islam, M. A.
Sakkas, V.
Albanis, T. A.
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peer reviewed
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J Hazard Mater
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This paper deals with the multiple response optimization for the removal of organophosphorus pesticide quinalphos [QP: O,O-diethyl O-2-quinoxatinyl phosphorothioate] from the aqueous solution onto low-cost material and tried to overcome the drawbacks of univariate optimization. Used tea leaves were used as low-cost adsorbent and batch equilibration method was followed for this study. A Box-Behnken design was used to develop response model and desirability function was then used for simultaneous optimization of all affecting parameters in order to achieve the highest removal% of quinalphos. The optimum conditions of factors predicted for quinalphos removal% were found to be: pH 8.83, concentration 7 mg L(-1) and dose 0.40 g. Under these conditions, maximum removal% of quinalphos was obtained 96.31%. Considering the above optimum conditions. the adsorption isotherms were developed and provided adsorption capacity of 196.07 mu g g(-1) by using Langmuir equation, indicating that used tea leaves may be applied as a low-cost material for pesticides removal from aqueous matrices. (C) 2009 Elsevier B.V. All rights reserved.
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box-behnken, desirability function, quinalphos, used tea leaves, box-behnken design, methyl parathion pesticide, natural-waters, quinalphos, optimization, adsorption, adsorbent, degradation, metabolite, variables
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<Go to ISI>://000269162000034
http://ac.els-cdn.com/S0304389409006906/1-s2.0-S0304389409006906-main.pdf?_tid=8471e7c95df39626bd69410b6c9b25ef&acdnat=1333022943_45bae1a7b474c1734136ad192f36c5b6
http://ac.els-cdn.com/S0304389409006906/1-s2.0-S0304389409006906-main.pdf?_tid=8471e7c95df39626bd69410b6c9b25ef&acdnat=1333022943_45bae1a7b474c1734136ad192f36c5b6
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en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας