Adsorpční studie odstranění mědi pomocí směsi šišek na pevném lůžku v náplňových kolonách

Abstract

In this work, fixed-beds with chemical activation mixtures of cones were employed to selectively remove copper aqueous solution. The effects of various operating conditions such as flow rate (10, 20, 40 ml min-1), bed height (5, 10, 15 cm) and pH 5,0 of the feed solution on the performance of the fixed beds were investigated. Better selectivity was obtained at a higher bed height 15 cm and lower flow rate 10 ml min-1. In most adsorption processes, the adsorbent is in contact with fluid in a fixed bed. Fixed-bed column mathematical models are required to predict the performance of the adsorptive separation of copper for optimizing design and operating conditions. Thomas model, Yoon-Nelson, Bed Depth Service Time (BDST) and column models were used to analyze the experimental results. Mathematical models were found to show a good agreement with the experimental results. The dynamic parameters such as rate constant (kTh, kYN, K), breakthrough time (τ), theoretical adsorption capacity (N0, q0) were determined. The resulting data were compared with the data of dynamic adsorption of Mn(II) onto mixture of cone.