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International Journal of Advances in Science, Engineering and Technology(IJASEAT)-IJASEAT
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Volume-4,Issue-4, Spl. Iss-2  ( Dec, 2016 )
Paper Title
Application of Nano Acacia Nilotica and Nano Titanium Dioxide (Tio2) For The Removal of Glyphosate- A Comparative Study
Author Name
Victor Joseph Fuller, M. Chaithanya Sudha
VIT University, Vellore, Tamilnadu- 632014
The use of low cost and locally available adsorbents have been identified for the removal of glyphosate from aqueous solution. This study deals with the removal of glyphosate using Acacia nilotica and titanium dioxide (TiO2) both in the form of nano particles as an adsorbent. Glyphosate is herbicide which is soluble in water and has direct and indirect effects on plant and animal life due to its persistent nature in the environment. Batch experiments were carried out to determine the effect of pesticide concentration, contact time, pH, different dosages of Acacia nilotica and TiO2 and rpm on adsorption efficiency. The results showed that adsorption capacity increased with increased dosage of nano Acacia nilotica while the adsorption capacity decreased when the dosage of TiO2 was increased. Adsorption of the complete series of concentration (200-600 mg/L) and increased with increasing time (2 h) and rpm (200). Optimum condition for glyphosate adsorption was favorable at pH 4. Nano Acacia nilotica recorded 82.7 mg/L of adsorption at optimum conditions. Nano TiO2 recorded maximum adsorption capacity of 78.9 mg/L at optimum conditions. Freundlich isotherms was obtained besides outcomes revealed that Freundlich isotherm model was best suited into it as it supported hetrogenous adsorption due to chemisorption. Index Terms— Nano Acacia nilotica; Nano TiO2; Glyphosate; Adsorption; Adsorption isotherm.
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