02774cam a2200277 7i4500 0000057694 20230727090000.0 Dissertations 210420 eng TSAM Library TJ145 LEE 2019 Lee, Ee Yern author Application of Corn Using Different Pre-Treatment For The Removal of Chromium, Managnese and Lead Ions from Aqueous Solution Lee Ee Yern. Nilai: INTI International University, August 2019. viii, 51 pages: illustrations, colors; 30 cm. text rdacontent unmediated rdamedia volume rdacarrier B.Eng (Hons) in Civil Engineering August 2019 BCEGI 72 FEQS-Civil August 2019 Water pollution has been increasing in recent times and Malaysian waters are no exception. Traces of heavy metals have been found in rivers and water sources from industrial and agricultural run-off and improper waste disposal. Hence, the most effectiveand efficient method of pollutant removal used today is the adsorption process. The experiment was conducted where each heavy metal was treated using HCl and vinegar pre-treated corn cob. The Chromium, Manganese, and Lead ions were acquired from theschool lab and mixed into their respective solutions with 2g/l, 80mg/l, and 2g/l concentration respectively. The corn cob was bought from the local market, washed, dried, grinded, and sieved using 3.5mm sieve. It was then pre-treated using HCl and vinegar for 24hrs and then dried. For Cr, Mn, and Pb using HCl-treated corn cob, maximum percentage removal was 58.75%, 98.68%, and 77.18% respectively. The maximum percentage removal for Cr, Mn, and Pb using vinegar-treated corn cob was 71.50%, 98.00%, and 74.25% respectively. The performance of corn cob pre-treated with vinegar was better than those pre-treated with HCl. This may be due to the acetic acid in vinegar which removes both hemicellulose and lignin, exposing more surface area to be used as binding sites. Furthermore, the equilibrium data showed that this experimentfavoured the Freundlich isotherm, as seen from the R2 values of each adsorption experiment, confirming the heterogeneity of the adsorbent. Hence, corn cob pre-treated using HCl and vinegar was proven to be effective in the removal of Cr, Mn, and Pb ions Being a project report submitted to INTI International University as a requirements for Bachelor Of Engineering (Hons) in Civil Engineering August 2019 under the managment and supervision of Faculty of Engineering & Quantity Surveying, INTI International University BCEGI Dissertations, academic -- Engineering Civil Engineering