Adsorption of Cadmium (II) Ions from Aqueous Solution onto Mango Leaves
Ahmed E. Al Prol *
National Institute of Oceanography and Fisheries, Suez Branch, Egypt
Magdi Abd El Azzem
Department of Chemistry, Faculty of Science, El- Menoufia University, Egypt
Adel Amer
National Institute of Oceanography and Fisheries, Suez Branch, Egypt
Mohamed E. A. El-Metwally
National Institute of Oceanography and Fisheries, Hurghada Branch, Egypt
Hazem T. Abd El-Hamid
National Institute of Oceanography and Fisheries, Alexandria Branch, Egypt
Khalid M. El-Moselhy
National Institute of Oceanography and Fisheries, Suez Branch, Egypt
*Author to whom correspondence should be addressed.
Abstract
The objective of this study was to evaluate the use of mango leaves for their ability to remove Cd2+ ions from aqueous solution by batch experiments. The adsorption of Cd2+ ions onto mango leaves were characterized by using various analytical techniques: Fourier transform infrared spectroscopy and Scanning electron microscopy. The effects of various parameters, such as solution pH, adsorbent dosage, initial concentration of cadmium ions, temperature and presence of chelating agent EDTA suppressed the uptake of Cd2+ ions were examined. The mango leaves investigated in this study showed good potential for the removal of cadmium from real industrial wastewater. The desorption test revealed that HCl was the best for the elution of metals from the tested mango leaves. The equilibrium data were well fitted with the Langmuir isotherms. In conclusion, the mango leaves was the favourable alternative of cadmium removal from water.
Keywords: Mango leaves, cadmium, wastewater, desorption