biosorption investigation and kinetic study of nickel and zinc removal in a laboratory scale bubble column reactor

The ability of microorganisms to absorb heavy metals has made biosorption as a cost effective and efficient method of biological treatment of various industrial effluents#in this study four colonies of bacteria (bacillus, pseudomonas, klebsiella, and escherichia coli) have been separated from an industrial zone effluent treatment center and later reproduced in the laboratory scale 3l buuble column reactor in order to be investigated whether they can remove zinc and nickel in a combination or not# the results showed the 94% removal of zinc and 44% removal of nickel during the experiments that confirmed the capability of microorganisms in biosorption systems# this operation was also investigated kinetically in order to find the best fitting between the first-order and second-order equations# the result showed a very good fitting with the second-order equation#