Kinetic Adsorption of Fluoride from an Aqueous Solution onto a Dolomite Sorbent

Authors

  • Aunnop Wongrueng Chiang Mai University
  • Benja Sookwong Chulalongkorn University
  • Pharkphum Rakruam Chiang Mai University
  • Suraphong Wattanachira Chiang Mai University

DOI:

https://doi.org/10.4186/ej.2016.20.3.1

Keywords:

Dolomite sorbent, fluoride, point of zero charge, pseudo-second order.

Abstract

The adsorption of fluoride from an aqueous solution onto a dolomite sorbent was studied. The surface morphology of the dolomite sorbent was evaluated, and it was found to have an un-smooth porous structure. The point of zero charge (PZC), specific surface area, and average pore size of the dolomite were observed at pH 8.5, 1.17 m2/g, and 105.7 Å, respectively. The major mineral components of the dolomite sorbent were dolomite, calcite, and quartz. From a kinetic adsorption test, the dolomite sorbent required 12 hours of contact time to reach equilibrium with a fluoride adsorption capacity of 0.000581 mM/g, and the kinetic adsorption fitted well with a pseudo-second order kinetic reaction with a rate constant of 21.07 g/mM·min.

Downloads

Download data is not yet available.

Author Biographies

Aunnop Wongrueng

Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand

Benja Sookwong

Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand
International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, Thailand

Pharkphum Rakruam

Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand

Suraphong Wattanachira

Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand

Downloads

Published In
Vol 20 No 3, Aug 23, 2016
How to Cite
[1]
A. Wongrueng, B. Sookwong, P. Rakruam, and S. Wattanachira, “Kinetic Adsorption of Fluoride from an Aqueous Solution onto a Dolomite Sorbent”, Eng. J., vol. 20, no. 3, pp. 1-9, Aug. 2016.

Most read articles by the same author(s)