Removal of Paraquat from Aqueous Solutions onto Zeolite LTL

Authors

  • Wilaiporn Insuwan Rajamangala University of Technology Isan Surin Campus
  • Kunwadee Rangsriwatananon Suranaree University of Technology

DOI:

https://doi.org/10.4186/ej.2017.21.2.15

Keywords:

Paraquat, zeolite LTL, removal, Langmuir isotherm.

Abstract

Zeolite LTL (K_LTL and H_LTL) was used as adsorbent for the adsorption of herbicide paraquat from an aqueous solution. The characterization of zeolite LTL has been carried out through various techniques: X-ray diffraction, X-ray fluorescence spectroscopy, FTIR and surface analysis. The adsorption occurred through cation exchange and the results showed that the adsorption capacity of paraquat onto K_LTL (161.71 mg/g) is higher than H_LTL (25.67 mg/g). These results can be explained by the amount of Al in the structure of zeolite and affinities of negative sites in zeolite and extra-framework cations (K+ and H+). The equilibrium data was best adjusted using the Langmuir model which has high correlation coefficient values (0.99).

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Author Biographies

Wilaiporn Insuwan
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Faculty of Agriculture and Technology, Rajamangala University of Technology Isan Surin Campus, Surin 32000, Thailand

Kunwadee Rangsriwatananon
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School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand

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Published In
Vol 21 No 2, Mar 31, 2017
How to Cite
[1]
W. Insuwan and K. Rangsriwatananon, “Removal of Paraquat from Aqueous Solutions onto Zeolite LTL”, Eng. J., vol. 21, no. 2, pp. 15-23, Mar. 2017.
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