Surfactant modification and adsorption properties of clinoptilolite for the removal of pertechnetate from aqueous solutions
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Natural clinoptilolite modified with a cationic surfactant stearyldimethylbenzylammonium chloride (SDBAC) was used as an adsorbent for the removal of pertechnetate from aqueous solutions. Adsorption studies were performed in a batch system. The effects of various experimental parameters (amount of surfactant loading, contact time, solution pH, competing anions) on the removal efficiency of TcO4− were investigated. SDBAC-clinoptilolite with organo-bilayer was successfully used to remove TcO4− from aqueous solutions in the pH range of 5.0-8.0. ReO4− as an analogue of TcO4− was used to model the isotherms. Adsorption capacity of the SDBAC-clinoptilolite and the mechanism of ReO4− (TcO4−) sorption were also determined.
KeywordsAdsorption 99Tc Surfactant SDBAC Organo-modified clinoptilolite
- 10.Ming WD, Mumpton AF (1989) In: Dixon BJ, Weed BS (eds) Minerals in soil environment, 2nd edn. Soil Science Society of America, MadisonGoogle Scholar
- 26.Yariv S (1992) In: Schrader ME, Loeb G (eds) Modern approach to wettability. Plenum Press, New YorkGoogle Scholar
- 29.Zhang P-C, Krumhans JL, Brady PV (2000) Boehmite sorbs perrhenate and pertechnetate. Radiochim Acta 88(6):369–373Google Scholar