03088cam a2200277 7i4500 0000057695 20230727090000.0 Dissertations 210420 eng TSAM Library TJ145 LIM 2019 Lim, Wen Jie author Removal of Copper, Chromium and Nickel Ions From Aqueous Solution by Using Different Pre-Treated OrangePeel Powder Lim Wen Jie. Nilai: INTI International University, August 2019. xiii, 66 pages: illustrations, colors; 30 cm. text rdacontent unmediated rdamedia volume rdacarrier B.Eng (Hons) in Civil Engineering August 2019 BCEGI 73 FEQS-Civil August 2019 Water due to heavy metal pollution has become a concerned issue in Malaysia. Among various water treatment methods, adsorption method has been considered as one of the most efficient waste water treatment technique. Therefore, this study was done to find out the adsorption capacity of orange peel (OP) by different pre-treatment in removing copper, chromium and nickel ion. OP powder was divided into three portions, first portion was untreated, with second and third portions pre-treated with sodium hydroxide (NaOH) and detergent respectively. Each chemical solution that contains copper (Cu), chromium (Cr) and nickel (Ni) ions respectively was tested by these three adsorbents. For the experiment originally untreated OP alone was effective enough to remove 74.00 % of nickel ions, 76.44 % of copper ions and 91.20 % of chromium ions within 24 hours. NaOH pre-treatment was found to be successfully enhancing the performance of OP in removing nickel and copper ions. The adsorption rate of nickel ion has been increased from 74 % to 85.67 %. While for copper ions, the adsorption rate has been increased from 76.44 % to 81.55 %. For NaOH treated OP, all of the heavy metal was best fitted to Freundlich Isotherm model (included Ni, Cu and Cr). Besides, for detergent treated OP, Ni and Cr were best fitted to Langmuir Isotherm model, while Cu best fitted to Freundlich Isotherm model. For untreated OP, Ni and Cu were best fitted to Langmuir Isotherm model, while Cr best fitted to Freundlich Isotherm model. Freundlich Isotherm model suggested that the adsorption processes have been carried out on a complex surface and Langmuir Isotherm model indicated that the adsorbents were undergoing monolayer adsorption process. In conclusion, this study has proved the OP has good abilities in removing heavy metal ions due to its good adsorption capacity, environment friendly nature and low cost characteristics 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