02056ntm a2200349 i 4500 MY-KuUP 20260730111215.0 t|||||r|||| 000 0 ta 260730t20252025my a|||fr|||| 000 0 eng d THE0010898 (Local) Hardback UMPSA eng UMPSA rda FTKKP .D74 2025 r Bc. Muhammad Danish Bin Ahmad Daud, , , , author. Study on coffee ground waste as green corrosion inhibitor for mild steel in hcl solution via scanning electron microscopy (SEM) & polarization test / Muhammad Danish Bin Ahmad Daud Kuantan, Pahang : UMPSA, 2025 © 2025 49 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 This study investigates the use of ground coffee waste as an eco-friendly corrosion inhibitor for mild steel in hydrochloric acid (HCl) solution. Coffee waste concentrations ranging from 3000 to 9000 ppm were tested in 0.5 M HCl. Results from polarization and SEM analyses indicated that coffee waste effectively reduced corrosion by forming protective layers. The corrosion rate decreased with increasing coffee waste concentration, with inhibition efficiency rising from 75% at 3000 ppm to 92% at 9000 ppm. These results demonstrate the potential of ground coffee waste as an effective, eco-friendly alternative for corrosion prevention Faculty of Chemical and Process Engineering Technology Dissertations Universities and colleges Dissertations Theses Dissertations https://umpir.ump.edu.my/id/eprint/47869 lcc PSM 0 0 lcc 0 0 10000 10000 2026-07-30 0 FTKKP .D74 2025 r Bc. T000004407 2026-07-30 11:12:40 2026-07-30 PSM 105354 105360