Mohammed M. Yassen*(1) Salwa J. Fakhir(1) Ola S. Qasim(1)
(1). Department of Soil and Water Resources, Agriculture College, University of Basrah, Basrah, Iraq.
(*Corresponding author: Dr. Mohammed M. Yassen. E-Mail: mohammedmalik875@gmail.com).
Received: 05/07/2020 Accepted: 02/08/2020
Abstract
Heavy minerals are hazard pollution on environment. It comes from different sources to be thrown in the environmental system. The adsorption process is a new technology for treatment heavy metals in waste water. In this study the minerals as Attoplgite and Zeolite and Iraqi clay mineral compared in their removal of pollution metals from aqueous system. Attoplgite, Zeolite and Iraqi clay were tested in adsorption of Zinc, Cadmium, Nickel and Manganase elements of different pH values viz. 3,4,5,6,7,8 and 9 of aqueous solutions. The results showed the increase in mineral adsorption with pH increase. Also the minerals were tested in elements adsorption at different weights: 0.025, 0.05, 0.1, 0.2, 0.4, 0.8 and 1.6 gm at pH=6 and diameter 75µm. The results of this experiment showed that maximum adsorption happed with mineral weight increases. Iraqi clay mineral was carrying out maximum removing percentage which reached 9.81, 90.21, 83.11 and 59.02% for heavy metals, Znic, Cadmium, Nickel and Manganese respectively, comparison to Attoplgite and Zeolite. Also the three clay minerals were tested for elements adsorption at different particles diameters viz. 50, 75, 100, 150, 200, 250 and 300 µm. The results showed that the adsorption quantity decreased as the diameter increased, and for that the removal percentage increased also with particles diameter decreases. The clay minerals took the following order: Iraqi clay mineral > Attoplgite mineral < Zeolite mineral for the heavy metals percentage increases.
Keywords: Clay minerals, Heavy metals, Adsorption, Aqueous solutions.