Removal of Boron by Surfactant Modified Zeolitic Tuff from Northeastern Greece

Nina S. Dionisiou, Theodora Matsi, Nikolaos D. Misopolinos

Abstract


Boron adsorption on surfactant modified zeolite (SMZ) was investigated, in the perspective of using SMZ for B removal from irrigation waters, since SMZ has been proven efficient adsorbent for many anions. A calcareous clinoptilolite was used and a sub-sample was treated with HCl. Then the charge of the external surface of the untreated and treated zeolite was modified and B adsorption was studied. The SMZ adsorbed B and its adsorption capacity was increased with HCl treatment and pH adjustment at the strongly alkaline range. However, in all cases the relative amounts of B removed from solution were much lower than other anions reported in the literature. In addition, B concentration in the equilibrium solution was above 3 mg L-1, which is considered a critical limit for B in irrigation waters in respect to the risk of B phytotoxicity. It was concluded that SMZ is not an effective means for B removal from irrigation waters and thus its use for B water treatment is not recommended.


Full Text: PDF DOI: 10.5539/jas.v5n12p94

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Journal of Agricultural Science ISSN 1916-9752 (Print) ISSN 1916-9760 (Online)

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the 'ccsenet.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.