Haron Jelas, Jahangirian Hossein, Silong Sidik, Yusof Nor Azah, Kassim Anuar, Moghaddam Roshanak Rafiee, Peyda Mazyar, Abdollahi Yadollah, Amin Jamileh, Gharayebi Yadollah
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Selangor, Malaysia.
J Oleo Sci. 2012;61(4):189-95. doi: 10.5650/jos.61.189.
Fatty hydroxamic acids derivatives based on palm kernel oil which are phenyl fatty hydroxamic acids (PFHAs), methyl fatty hydroxamic acids (MFHAs), isopropyl fatty hydroxamic acids (IPFHAs) and benzyl fatty hydroxamic acids (BFHAs) were applied as chelating agent for copper liquid-liquid extraction. The extraction of copper from aqueous solution by MFHAs, PFHAs, BFHAs or IPFHAs were carried out in hexane as an organic phase through the formation of copper methyl fatty hydroxamate (Cu-MFHs), copper phenyl fatty hydroxamate (Cu-PFHs), copper benzyl fatty hydroxamate (Cu-BFHs) and copper isopropyl fatty hydroxamate (Cu-IPFHs). The results showed that the fatty hydroxamic acid derivatives could extract copper at pH 6.2 effectively with high percentage of extraction (the percentages of copper extraction by MFHAs, PFHAs, IPFHs and BFHAs were found to be 99.3, 87.5, 82.3 and 90.2%, respectively). The extracted copper could be quantitatively stripped back into sulphuric acid (3M) aqueous solution. The obtained results showed that the copper recovery percentages from Cu-MFHs, Cu-PFHs, Cu-BFHs and Cu-IPFHs are 99.1, 99.4, 99.6 and 99.9 respectively. The copper extraction was not affected by the presence of a large amount of Mg (II), Ni (II), Al (III), Mn (II) and Co (II) ions in the aqueous solution.
基于棕榈仁油的脂肪族异羟肟酸衍生物，即苯基脂肪族异羟肟酸（PFHA）、甲基脂肪族异羟肟酸（MFHA）、异丙基脂肪族异羟肟酸（IPFHA）和苄基脂肪族异羟肟酸（BFHA），被用作铜液 - 液萃取的螯合剂。通过形成甲基脂肪族异羟肟酸铜（Cu - MFHs）、苯基脂肪族异羟肟酸铜（Cu - PFHs）、苄基脂肪族异羟肟酸铜（Cu - BFHs）和异丙基脂肪族异羟肟酸铜（Cu - IPFHs），在己烷作为有机相的情况下，用MFHA、PFHA、BFHA或IPFHA从水溶液中萃取铜。结果表明，脂肪族异羟肟酸衍生物在pH 6.2时能有效萃取铜，萃取率较高（发现MFHA、PFHA、IPFHA和BFHA对铜的萃取率分别为99.3%、87.5%、82.3%和90.2%）。萃取的铜可以定量反萃回到硫酸（3M）水溶液中。所得结果表明，从Cu - MFHs、Cu - PFHs、Cu - BFHs和Cu - IPFHs中回收铜的百分比分别为99.1%、99.4%、99.6%和99.9%。水溶液中大量Mg（II）、Ni（II）、Al（III）、Mn（II）和Co（II）离子的存在不影响铜的萃取。
