synthesis of mno2 nanowires adsorbent for gold recovery from electroplating wastewater using taguchi method

In this study, mno2 nanowire adsorbent was synthesized by low cost preparation method that was capable of extracting gold form diluted jewellery waste water solutions. different adsorption parameters like number of treatment, hold time, ph and agitation speed of mixing on the gold adsorption were studied. adsorption experiments was designed by taguchi method and effectiveness of parameters as well as optimum operating conditions were determined. the manganese oxide adsorbent, prepared by low-temperature synthesis followed by acid treatments, exhibits a nanowire like morphology. the results showed that under the optimum operating condition, gold adsorption efficiency was more than 77.2% during 2h.