Singh, Joginder, Amjad Ali, and Raman Kumar. 2013. “Removal of Ni2+, Cu2+ and Zn2+ Using Different Agricultural Residues: Kinetics, Isotherm Modeling and Mechanism via Chemical Blocking”. Asian Journal of Chemistry 25 (11):6377-86. https://doi.org/10.14233/ajchem.2013.14651.