![]() In order to determine the efficiency and safety of these amendments, as an affordable strategy, for overcoming salinity and sodicity stress. A pot experiment was undertaken, to evaluate the effect of Phosphogypsum (PG) and Gypsum (G), to remove salts, nutrients and trace elements in leached water from saline and saline-sodic soils. Salinity and sodicity are the most agricultural challenges in arid and semi-arid regions. The other ligands still showed no affinity for cadmium removal from WPA. Distinctly, the results relatively to R equaling 10 showed significant increase in cadmium removal specifically to DIBDPi (Diisobutyl dithiophosphinate), DEDTP (Diethyl dithiophosphate), ZDDP (Zinc dialkyl dithiophosphinate), TBAI (Tetrabutyl ammonium iodide), Na2CS3 (Sodium trithiocarbonate), and Aliquat 366 (Methyltrioctyl ammonium chloride), with an efficiency of 86 %, 71 %, 68 %, 29 %, 24 %, and 21 %, respectively. The tests were separately performed under the stoichiometric conditions corresponding to a molar ratio R (nLigand/ncd) of 2, and the excess conditions corresponding to a molar ratio R (nLigand/ncd) of 10. A number of 21 organic ligands were carefully selected based on their potential removal of cadmium. The cadmium removal tests from WPA were carried out under the industrial conditions of 25 % (w/w) P2O5, 14 ppm Cd, and 80 ☌. The present research article aims to experiment new organic ligands potentially proved in various media for the cadmium removal. However, the challenge still the high cost of ligand and its insufficient world production capacity in comparison to the increasingly demand. It is easy to integrate industrially and does not require significant investment and maintenance overhead the cost is driven by the organic ligand stability, efficiency and price. This technic consists in making complexes between cadmium and ligands. Recently, the application of organic coordination ligands for the cadmium removal from wet phosphoric acid (WPA) has shown a great interest, and a certain number of commercially available ligands have shown some affinity and selectivity for cadmium.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |