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Kaana Asemave, Andrew J Hunt, Thomas J Farmer, James H Clark and Fergal Byrne
The University of York, UK
Posters-Accepted Abstracts: Organic Chem Curr Res
There is increasing demand for metals for various usages; but their reserves are depleting over the years. Thus recovery of metals from used economy is being considered as means of metals sustainability. One way of recovering metals is with chelants. Notwithstanding, the commonly used chelating agents have some environmental challenges and there is much interest for replacing them. Recent researches have mainly focus on biodegradable alternative chelants for the replacements of the commonly used ones. In this particular work, bioderived lipophilic alternative chelating agent is considered as potential metals recovering agents. The known C31 saturated lipophilic chelant was isolated from biomass and used for the extraction of some metals salts (NiCl2, Co(NO3)2.6H2O, Cu(CH3COO)2, CuCl2, CoCl2, FeCl3, CrCl3.6H2O) using ligand- metal ratio of 1: 10) in relation to a similar commercial compound dibenzoylmethane (DBM). The concentrations of the residual metal ions were measure with UV spectrophotometer, while the changes in the pH before and after the metals extraction were measured with JENWAY 3505 pH meter.The amount of various metals extracted (mg per dm3) with this bioderived chelant was comparable to the commercial chelant (dibenzoylmethane) and better than it in case of NiCl2. The equilibrium pH and the solubility of these chelates in the extracting solvent may have played dominant role in the extent of the extraction of these salts. Thus, the isolated compound can be used potentially as bioderived alternative chelating agents for metals recovery and in related applications.
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