Benzyl and Methyl Fatty Hydroxamic Acids Based on Palm Kernel Oil as Chelating Agent for Liquid-Liquid Iron(III) Extraction |
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Authors: | Haron Md Jelas Jahangirian Hossein Silong Sidik Yusof Nor Azah Kassim Anuar Rafiee-Moghaddam Roshanak Mahdavi Behnam Peyda Mazyar Abdollahi Yadollah Amin Jamileh |
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Affiliation: | Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia; E-Mails: sidik@science.upm.edu.my (S.S.); azah@science.upm.edu.my (N.A.Y.); anuar@science.upm.edu.my (A.K.); jaamin2000@yahoo.com (J.A.). |
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Abstract: | Liquid-liquid iron(III) extraction was investigated using benzyl fatty hydroxamic acids (BFHAs) and methyl fatty hydroxamic acids (MFHAs) as chelating agents through the formation of iron(III) methyl fatty hydroxamate (Fe-MFHs) or iron(III) benzyl fatty hydroxamate (Fe-BFHs) in the organic phase. The results obtained under optimized conditions, showed that the chelating agents in hexane extract iron(III) at pH 1.9 were realized effectively with a high percentage of extraction (97.2% and 98.1% for MFHAs and BFHAs, respectively). The presence of a large amount of Mg(II), Ni(II), Al(III), Mn(II) and Co(II) ions did affect the iron(III) extraction. Finally stripping studies for recovering iron(III) from organic phase (Fe-MFHs or Fe-BFHs dissolved in hexane) were carried out at various concentrations of HCl, HNO(3) and H(2)SO(4). The results showed that the desired acid for recovery of iron(III) was 5 M HCl and quantitative recovery of iron(III) was achieved from Fe(III)-MFHs and Fe(III)-BFHs solutions in hexane containing 5 mg/L of Fe(III). |
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Keywords: | Iron extraction methyl fatty hydroxamic acid benzyl fatty hydroxamic acid iron(III) methyl fatty hydroxamate iron(III) benzyl fatty hydroxamate palm kernel oil |
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