R. Malekian and J. Abedi-Koupai and S. S. Eslamian, Use of Zeolite and Surfactant Modified Zeolite as Ion Exchangers to Control Nitrate Leaching. journal = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2011, vol. 52(4). 267 - 271 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/12522.