Extraction And Pre-Concentration of Zinc(Ii) Ion by Fatty Hydroxamic Acids Immobilized Onto Zeolit

Abstract

Mining in Indonesia contributes significantly to mineral supplies nationally, but illegal mining activities can cause natural destruction, habitat loss and loss of biodiversity. This is because only the main metal, which is the gold taken while the other metal is discharged into the drain as waste. One of the metal ions to be waste is the zinc(II) ion. A method of zinc(II) ion extraction from other ions by using a column containing fatty hydroxamic acids – loaded zeolit (FHA-Zeo) is described. Several factors, which affect the extraction efficiency such as pH, sample volume, and concentration of eluent and flow rate, have been investigated. The maximum sorption capacity of FHA-zeo obtained was 88.38 mg/g. A quantitative recovery of zinc(II) ion from FHA-zeo column was obtained using 10% HNO3 solutions as eluent with a pre-concentration factor up to 60. A method for separation of zinc(II) from lead(II) is proposed. A rapid sample throughput, a clean separation, a high pre-concentration factor and simplicity are the main advantages in these analytical procedures.