Page 9 - أبحاث كلية الهندسة

2017 Publications

International Journal of Chemical
Reactor Engineering

Aqueous Phase Biosorption of Pb (II), Cu (II), and Cd (II) onto Cabbage Leaves
Powder

Firas Hashim Kamar, Aurelia Cristina Nechifor, Gheorghe Nechifor, Tariq J. Al-Musawi and Asem
Hassan Mohammed

In this study, the biosorption of lead (Pb(II)), copper (Cu(II)), and cadmium (Cd(II))
ions from aqueous solution using waste of cabbage leaves powder (CLP) was
investigated as a function of pH, shaking time, initial metal concentration, and
biosorbent dose. The maximum removal efficiency at optimum condition in single
biosorption system was 95.67, 92.42, and 88.92 % for Pb(II), Cu(II), and Cd(II) ions,
respectively. These values reduced in ternary systems in the same sequence. Langmuir
and extended Langmuir isotherm models were found to be the best fit of the isotherm
data for single and ternary biosorption systems, respectively. The kinetic data of the
three metals were better fit by the pseudo-second-order model with higher coefficient of
determination and more closely predicted uptake. In addition, the results showed that
the intraparticle diffusion was the dominating mechanism. Thermodynamic study
showed that the biosorption of Pb(II), Cu(II), and Cd(II) onto CLP was a chemical
reaction which was exothermic in nature. Finally, SEM image shows that CLP has a
number of heterogeneous small pores while the Fourier transform infrared (FTIR)
spectroscopic analysis showed that the carboxyl, amine, and hydroxyl groups are the
major groups that are responsible for the biosorption process.
https://www.degruyter.com/view/journals/ijcre/15/2/article-20150178.xml

4