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Abstract
The ability to remove heavy metals such as cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni), mercury (Hg), arsenic (As), zinc (Zn), and stannum (Sn) from aqueous systems by a common Mediterranean aquatic plant, Apium nodiflorum, was studied. It was shown that Apium nodiflorum could absorb from aqueous solutions significant amounts of the above‐mentioned heavy metals. The kinetics of the absorption follows a first order model in respect to the difference between the metal concentration in the plant and the saturation concentration. The kinetic parameters for each heavy metal were estimated using the collected data from batch cultivation experiments into a well‐tried algorithm. The maximum ability for daily heavy metals removal assuming 0.1 hectare of Apium nodiflorum cultivation is as follows: 0.208 kg for Cd, 0.45 kg for Cr, 0.368 kg for Cu, 0.113 kg for Pb, 0.425 kg for Mn, 0.312 for As, 0.398 kg for Ni, 0.116 kg for Hg, 0.357 for Zn and 0.197 kg for Sn. It is thought that Apium nodiflorum could be used in the tertiary water and wastewater treatment for heavy metal removal.