Adsorption of Cu, As, Pb and Zn by banana trunk; [Penjerapan Cu, As, Pb dan Zn oleh batang pisang]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Yasim N.S.E.M.; Ismail Z.S.; Zaki S.M.; Azis M.F.A.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958552175&doi=10.17576%2fmjas-2016-2001-20&partnerID=40&md5=675ef1109d14e8faadf3fb46313d9d70

The purpose of this study is to investigate the effectiveness of banana trunk as an adsorbent in removal of heavy metals in aqueous solution. Functional groups of adsorbent were determined using Fourier Transform Infrared spectroscopy (FTIR). Batch experiments were conducted to determine the adsorption percentage of heavy metals (Cu, As, Pb and Zn). The optimum adsorption using banana trunk was based on pH difference, contact time and dosage. Adsorption percentage was found to be proportional to pH, contact time and dosage. Maximum adsorption percentage of Cu, As, Pb and Zn at pH 6, 100 minutes and 8 gram of dosage are 95.80 %, 75.40 %, 99.36 % and 97.24 %, respectively. Langmuir and Freundlich isotherms were used to determine the equilibrium state for heavy metals ion adsorption experiments. All equilibrium heavy metals were well explained by the Freundlich isotherm model with R2 = 0.9441, R2 = 0.8671, R2 = 0.9489 and R2 = 0.9375 for Cu, As, Pb and Zn respectively. It is concluded that banana trunk has considerable potential for the removal of heavy metals from aqueous solution. © 2016, Malaysian Society of Analytical Sciences. All rights reserved.