Document Type
Research Paper
Abstract
This work is an attempt to remove cadmium (II) from wastewater by adsorption on multi-walled carbon nanotubes (MWCNTs) and functional group of carbon nanotubes (fMWCNTs) by using the batch process system and continuous reactor. In the batch reactor, the main variables that govern process efficiency such as the initial Cd (II) concentration, MWCNTs dose, contact time, stirring speed, and pH were studied. The experiments revealed that the amount of cadmium absorption (II) was higher on the increasing fMWCNTs dose and stirring speed. In addition, it decreased significantly with a decrease in the initial concentration of cadmium. The optimum values for the ratio of the acidic function in solution 5.5, the absorbent dose (fMWCNTs) 1 g in 100 ml of Cd (II) solution, and the contact time was 30 minutes, in addition to C0 of 125 mg per liter of the cadmium ion with mixing speed (stirring) 100 rpm, these are the optimum values by which the cadmium ion removal efficiency was obtained for no more than 99%. Equilibrium data were better explained by the Freundlich isotherm model which was converted inside what was achieved with 30 minutes of Cd + 2.
Recommended Citation
Frayyeh, Waleed; Mohammed, Zainab; and Mahmood, Abdulkhaleq
()
"Removal of heavy metal ions from wastewater by carbon nanotubes (CNTs),"
Engineering and Technology Journal: Vol. 39:
Iss.
12, Article 24.
DOI: https://doi.org/10.30684/etj.v39i12.789
DOI
10.30684/etj.v39i12.789
First Page
1939
Last Page
1944
