Adsorptive remediation of Cu(II) and Cd(II) contaminated water using manganese nodule leaching residue N. S. Randhawa a* , N. N. Das b and R. K. Jana a a Metal Extraction & Forming Division, CSIR-National Metallurgical Laboratory, Jamshedpur–831007, Jharkhand, India b Department of Chemistry, North Orissa University, Baripada–757003, Odisha, India *Corresponding author Dr. N. S. Randhawa Metal Extraction & Forming Division, CSIR-National Metallurgical Laboratory, Jamshedpur–831007, Jharkhand, India Phone: +91-657-2345184 (Off), +91-9835590339 (Mob) Fax: +91-657-2345245 Email: nsrandhawa@gmail.com Prof. (Dr.) N. N. Das Phone: +91-6792-259491 (Resi.), +91-9437320201 (Mob) Email: dasnn64@rediffmail.com Dr. R. K. Jana Phone: +91-657-2345185 (Off), +91-9431703888 (Mob) Fax: +91-657-2345245 Email: rkj@nmlindia.org