TY - CONF AV - none N1 - cited By 16; Conference of 2016 International Symposium on Civil and Environmental Engineering, ISCEE 2016 ; Conference Date: 5 December 2016 Through 6 December 2016; Conference Code:127174 TI - Reducing Heavy Metal Element from Coal Bottom Ash by Using Citric Acid Leaching Treatment Y1 - 2017/// KW - Agricultural wastes; Ash handling; Ashes; Citric acid; Coal; Coal ash; Copper; Environmental engineering; Fly ash; Heavy metals; Leaching; Lead; Silica; Slags; Waste incineration; Zinc KW - Acid leaching treatments; Citric acid solution; Combustion of coal; Heavy metal contents; Heavy metal elements; Solution temperature; Treatment methods; Treatment process KW - Coal combustion SN - 2261236X PB - EDP Sciences A1 - Yahya, A.A. A1 - Ali, N. A1 - Mohd Kamal, N.L. A1 - Shahidan, S. A1 - Beddu, S. A1 - Nuruddin, M.F. A1 - Shafiq, N. VL - 103 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018577202&doi=10.1051%2fmatecconf%2f201710301004&partnerID=40&md5=492152e33bae58bede61c6f056e564ef N2 - Coal ash is the residue that is produced during coal combustion for instance fly ash, bottom ash or boiler slag which was primarily produced from the combustion of coal. With growth in coal burning power station, huge amount of coal bottom ash (CBA) considered as hazardous material which are normally disposed in an on-site disposal system without any commercialization purpose. Previous researchers have studied the extraction of silica from agricultural wastes such as palm ash and rice husk ash (RHA) and CBA by using leaching treatment method. In this study, the weaker acid, citric acid solution was used to replace the strong acid in leaching treatment process. Result showed that the heavy metal content such as Copper (Cu), Zinc (Zn) and Lead (Pb) can be decrease. Meanwhile the silica can be extracted up to 44 from coal bottom ash using citric acid leaching treatment under the optimum reaction time of 60 minutes with solution temperature of 60°C and concentration of citric acid more than 2. © The Authors, published by EDP Sciences, 2017. ID - scholars8726 ER -