02612ntm a2200349 i 4500 MY-KuUP 20260730113244.0 t|||||r|||| 000 0 ta 260730t20252025my a|||fr|||| 000 0 eng d THE0010900 (Local) Hardback UMPSA eng UMPSA rda FTKKP .A3 2025 r Bc. Muhammad Amjad Bin Mohd Faris, , , , author. Ground coffee waste as a green corrosion inhibitor for mild steel in hcl solution via electrochemical impendance spectroscopy (eis) and weight loss / Muhammad Amjad Bin Mohd Faris Kuantan, Pahang : UMPSA, 2025 © 2025 xi, 59 pages : illustrations ; rdacontent text rdamedia unmediated rdacarrier volume rda text file PDF Faculty of Chemical and Process Engineering Technology Final Year Report (Bachelor of Technology Mechanical Engineering (Petroleum) with Hons ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 Include bibliographical reference Corrosion in industrial applications, particularly with mild steel in acidic environments, offers considerable issues in terms of safety, maintenance costs, and environmental impact. Traditional corrosion inhibitors may use hazardous substances that raise questions about sustainability. The application of ground coffee waste (GCW) as an environmentally acceptable, sustainable, and reasonably priced green corrosion inhibitor for mild steel in 0.5 M HCl solution is investigated in this work. Rich in bioactive substances like polyphenols, tannins, and caffeine, GCW was used to create protective films on the metal surface, which slowed the rate of corrosion. Electrochemical impedance spectroscopy (EIS) and weight loss measurements were used to assess GCW's efficacy as a corrosion inhibitor. Results demonstrated that GCW solutions at concentrations of 3000, 6000, and 9000 ppm considerably decreased corrosion rates, with the maximum inhibitor efficiency of 92% recorded at 9000 ppm. The findings imply that GCW, a sustainable consequence of coffee consumption, has tremendous potential as a green corrosion inhibitor, harmonizing with environmental and economic sustainability goals. Faculty of Chemical and Process Engineering Technology Dissertations Universities and colleges Dissertations Theses Dissertations https://umpir.ump.edu.my/id/eprint/47876 lcc PSM 0 0 lcc 0 0 10000 10000 2026-07-30 0 FTKKP .A3 2025 r Bc. T000004409 2026-07-30 11:33:03 2026-07-30 PSM 105356 105362