Extraction study on recovery of nickel (II) from concentrated chloride medium with N,N′-bis(salicylaldeyde)ethylenediimine in the presence of CTAB and Brij® 35 surfactants
| Autor: | Zeyneb Benfettouma, Mohammed Hadj Youcef, Hasnia Reffas, Tayeb Benabdallah |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Polymers and Plastics
Chemistry Extraction (chemistry) chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Chloride Surfaces Coatings and Films Nickel 020401 chemical engineering medicine Chelation 0204 chemical engineering Physical and Theoretical Chemistry 0210 nano-technology Nuclear chemistry medicine.drug |
| Zdroj: | Journal of Dispersion Science and Technology. 42:1912-1925 |
| ISSN: | 1532-2351 0193-2691 |
| Popis: | New extraction systems have been developed for recovery of nickel(II) from concentrated saline chloride medium (1 M) via the use of the chelating extractant, N,N��� Bis(salicylaldeyde) ethylenediimine (H2SALEN), and different surfactants namely, cetyltrimethyl, ammonium, bromide (CTAB) and polyoxyethylene (23), dodecyl either (Brij�� 35).The effects of the main experimental parameters such as extraction time, pH, extractant concentration and surfactant concentration on the extraction process of nickel(II) with H2SALEN alone and H2SALEN-surfactant mixture at 30 ��C were studied and compared. The findings of the examination revealed a good recovery (E = 70���80%) of nickel with H2SALEN alone in various solvents (chloroform, toluene and methylisobutylketone) in the acidic pH range (4���5). The addition of both CTAB and Brij�� 35 to the aqueous phase resulted in a remarkable increase in the rate of nickel extraction by reducing the extraction time from 4 hours to 20���30 minutes. The stoichiometries of the extracted species and extraction constants were ascertained by slope analysis method. The surfactant-based extraction systems have shown high extractability and a fast separation of Ni (II) into chloroform than with the reported ones. The extraction mechanisms of nickel have been suggested. |
| Databáze: | OpenAIRE |
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