engleski

The copper adsorption on zeolite NaX - the impeller location impact

Copper is a metal that naturally exists as a mineral in rocks, soil, plants, animals, and water but, it is also an essential trace element required to maintain a good health. Considering that copper is easily shaped, molded, or it may be combined with other metals, it is commonly used to make electrical wiring, pipes, valves, fittings, coins, cooking utensils, building materials, and household plumbing materials. The copper level in surface and groundwater is generally very low. However, higher levels may get into the environment through farming, mining, manufacturing processes, and municipal or industrial wastewater releases into rivers and lakes. Additionally, copper pipes can corrode and release copper into drinking water to a level that can affect its quality and safety. Since copper can be removed from water by applying various adsorbents, it is important to know the copper adsorption process as much as possible. The impact of hydrodynamic conditions in a batch reactor on the copper adsorption from solutions containing Cu2+ ions on zeolite NaX particles with a size of 0.063 to 0.090 mm was investigated. The aim of this research was to examine the influence of impeller location inside the batch reactor on Cu2+ adsorption on just suspended NaX zeolite, in baffled and unbaffled reactor. First, test suspended impeller speed were determined for further kinetic examination. During examination, beside solution concentration the power consumption at a constant suspension temperature was measured as well. The Blanchard model, Mixed surface reaction and diffusion controlled adsorption kinetic model and Weber-Morris model were used for the kinetic analysis of the experimental data. According to AARD values the reaction is kinetic controlled and follows the kinetics of the second order. It was also evident that the increase in the turbine location height results in the power consumption increase.

copper ; zeolite NaX ; kinetic models ; impeller location

nije evidentirano