Birniwa, A.H. and Mahmud, H.N.M.E. and Abdullahi, S.S. and Habibu, S. and Jagaba, A.H. and Ibrahim, M.N.M. and Ahmad, A. and Alshammari, M.B. and Parveen, T. and Umar, K.  (2022) Adsorption Behavior of Methylene Blue Cationic Dye in Aqueous Solution Using Polypyrrole-Polyethylenimine Nano-Adsorbent.  Polymers, 14 (16).   ISSN 20734360