Document Type : Research Paper
Author
University of Anbar -Collage of Science.
Abstract
Removal of heavy metals from water and wastewater has received a great deal of attention. Froth flotation technique is one of the most technologies being used for treatment of polluted water, where it considered low cost process than others. This study records lab scale experiments to test efficiency of multistage froth flotation column in removing a heavy metal, (Pb fine particles less than 45 µm) from wastewater of battery industry. Solutions concentration of Pb (100ppm) was prepared and passed through flotation column. The removal efficiency was quite high for Pb ranging from 62.4-96.3% and maximum removal occurred at frother concentration (20 ppm) and superfacial gas velocity (4 cm/sec), where caprylic acid and hexanol are used as frother in this study. Attempts made to analyze the kinetic behavior of the process indicate that it follows the first-order classical rate equation for the kinetic of froth flotation process. In the proposed equation, values of the constants correlation coefficient (R) and kinetic flotation constant (k), evaluated from the experimental results then (k) related to the frother dosages and superfacial gas velocity.
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