International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 6 1 2016 January 18 Citrus sinensis peels as a Green Corrosion Inhibitor for Mild Steel in 5.0 M Hydrochloric Acid Solution 53 60 EN A Ewais Hassan 1 Chemistry Department, Faculty of Science, King Abdulaziz University, P.O Box.80203, Jeddah, 21589, SAUDI ARABIA Abdel-Salam Ahmed H 2 Chemistry Department, Faculty of Science, Alexandria University, Alexandria, EGYPT Ismail Mohamed K 3 Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef City, EGYPT S.B. Dare 1 Department of Chemistry, New Arts Commerce and Science College, Ahmednagar, Maharashatra, INDIA A. Vijayalakshmi 1 Department of Chemistry, RMK Engineering College, Chennai, Tamilnadu, India Balraj Vidyavathy 2 Department of Chemistry, Velammal Engineering College, Chennai, Tamilnadu, India B. Chithra 3 Department of Chemistry, RMK Engineering College, Chennai, Tamilnadu, India V.S. Gavhane 1 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India D.M. Suryawanshi 2 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India A.S. Rajbhoj 3 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India S.T Gaikwad 4 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India Habeeb Jabrail Fawzi 1 Polymer Research Lab. Chemistry Department, Science College, Mosul University, Mosul, IRAQ E. Mahmood Mahmood 2 Polymer Research Lab. Chemistry Department, Science College, Mosul University, Mosul, IRAQ O.A. Ogbonna 1 Department of Environmental Management and Toxicology, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA P.C. Ogbonna 2 Department of Environmental Management and Toxicology, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA M.C. Dike 3 Department of Forestry and Environmental Management, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA F.C. Ibe 1 Department of Chemistry, Imo State University P.M.B 2000, Owerri, Imo State, NIGERIA P.C. Njoku 2 Department of Chemistry, Federal University of Technology P. M.B. 1526, Owerri, Imo State, NIGERIA Jude I. Alinnor 3 Department of Chemistry, Federal University of Technology P. M.B. 1526, Owerri, Imo State, NIGERIA A.I. Opara 4 Department of Geology, Federal University of Technology 1526, Owerri, Imo State, NIGERIA Harish Kumar 1 Electrochem. and Mat. Sci. Lab., Dept. of Chemistry, Ch. Devi Lal University, Sirsa, 125 055, Haryana, INDIA Vikas Yadav 2 Electrochem. and Mat. Sci. Lab., Dept. of Chemistry, Ch. Devi Lal University, Sirsa, 125 055, Haryana, INDIA > Research Paper 2015 8 30 2016 January 18 Corrosion characteristics of dried peels of Citrus sinensis (sweet orange) on mild steel (MS) in 5.0 M HCl solution was studied by Weight loss, Gasometric, Electrochemical Polarization and Impedance Spectroscopic techniques. The percentage corrosion inhibition efficiency (PCIE) increases with increase in concentration of the Citrus sinensis from 0.1 to 4.0 g/l. Polarization measurement indicates that Citrus sinensis acts as mixed-type corrosion inhibitor. The corrosion protection to metal surface was provided via adsorption of green corrosion inhibitor. SEM and Metallurgical Research Microscopy study proves adsorption of green corrosion inhibitor (CI) molecules on MS surface. More than 93.0 PCIE was observed for MS at 4.0 g/l of Citrus sinensis in 5.0 M HCl solution. Copyright@ International Science Community Association