Investigation of behavior magnetic activated carbon prepared Iris paint for removal of cadmium ions

Heavy metal contamination is a widespread environmental problem because they are non-biodegradable and have the potential to accumulate in human and animal bodies [1]. Cadmium as a common contaminant; cause dysfunction of the kidneys, liver, and lungs [2]. In order to remove the toxic heavy metals from waters and wastewaters, searching for new technologies has directed attention to biosorption based on metal-binding capacities of various biological materials [2] . Analytical techniques such as electrothermal atomic absorption spectrometry (ETAAS) and inductively coupled plasma mass spectrometry (ICP-MS) are the techniques available for direct determination of trace metals with sufficient sensitivity. Flame atomic absorption spectrometry (FAAS) is a more readily accessible technique and has wide applications for determination of metal ions in solutions, because of its speed and availability in most routine laboratories [3]. In this work, we consider the sorption of dissolved cadmium from aqueous solution by magnetic activated carbon prepared Iris paint. The optimum conditions for the determination and preconcentration of cadmium are obtained as 10 mg of adsorbent, pH of 7.0, agitation rate of 520 rpm, concentration of cadmium solution is 0.5 mg L-1, contact time 45 min. Under the optimal conditions the relative standard deviation (RSD) was obtained as 0.59.