@article{igwe_abia_2007,  title={Adsorption isotherm studies of Cd (II), Pb (II) and Zn (II) ions bioremediation from aqueous solution using unmodified and EDTA-modified maize cob},  volume={32},  ISSN={0100-4670},  url={https://doi.org/10.1590/S0100-46702007000100005},  DOI={10.1590/S0100-46702007000100005},  number={1},  journal={Eclética Química},  publisher={Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP},  author={Igwe, J.C and Abia, A.A.},  year={2007},  pages={33–42} }