Cadmium Removal from Aqueous Solution by Prosopis Cineraria Leaf Ash (PCLA)

Document Type : Original Article


1 Department of Chemical Engineering, Petroleum University of Technology, Abadan, Iran

2 Department of Environmental Health Engineering, School of Public Health, Jundishapur University of Medical Sciences, Ahvaz, Iran


Sorption ability of Prosopis Cineraria Leaf Ash (PCLA) was investigated for removal of cadmium (II) from aqueous solution. The
effect of different factors such as sorbent dose (1-3 g/L), pH (4-10) and initial concentration of cadmium (20-100mg/L) was studied
in batch experiments. The experimental equilibria data were analyzed by Freundlich, Langmuir, Temkin and Brunauer-EmmettTeller isotherm models. The Freundlich isotherm model provided a best fit with the equilibrium sorption data. Using Langmuir
isotherm model the calculated maximum binding capacity was 24.6 mg of cadmium (II) per gram of PCLA. The maximum
percentage of removed cadmium was 96% at pH of 7, with 3 g/L PCLA from solution containing 20 mg/L of Cd (II).