Surface functionalized diatomaceous earth for effective adsorption of strontium from aqueous solution

  • Rahulgandhi Dhanapal
  • Reshma Ravindran
  • N. Seethalakshmi
  • R. SelvakumarEmail author


In the present study, the diatomaceous earth (DE) was used as a sorbent for strontium (Sr) removal from aqueous solution. DE was surface functionalized using silane [tetraethoxysilane (TEOS), dimethyldiethoxy silane (DMODMS)], ionic liquid impregnation [trihexyltetradecyl phosphonium chloride (Cyphos IL-101)] and manganese chloride (MnCl2). Among the functionalized DE, DMODMS functionalized DE showed the highest Sr removal (90%). The variation in Sr removal using different adsorbents are in the order of DMODMS > TEOS > MnCl2 > control DE > Cyphos 101. The results indicate that silane modified DE is having a higher capacity to remove Sr when compared to all other modifications and can be used to adsorb Sr from contaminated water.


Diatomaceous earth Surface modification Characterization Strontium Adsorption 



Funding was provided by Department of Science and Technology, Ministry of Science and Technology (DST/TM/WTI/2K16/113(G)).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Department of BiotechnologyPSG College of TechnologyPeelamedu, CoimbatoreIndia
  2. 2.Nanobiotechnology LaboratoryPSG Institute of Advanced StudiesPeelamedu, CoimbatoreIndia

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