Adsorption of Pb(II) ions on sulfuric acid treated leucaena leucocephala leaf powder

• Main Authors: Guojian C. (Author), Hanafiah, M.A.K.M (Author), Ismail, M. (Author), Mansur, N.F (Author), Muhammad Y. (Author)
• Format: Article
• Language: English
• Published: EDP Sciences 2015
• Subjects: Adsorption; Adsorption capacities; Adsorption kinetics; Adsorption parameters; Adsorption process; Industrial wastewaters; Ions; Isotherms; Langmuir isotherm models; Lead; Lead removal (water treatment); Leucaena leucocephala; Pseudo-second order model; Sulfuric acid
• Online Access: View Fulltext in Publisher; View in Scopus
• ISBN: 2261236X (ISSN)
• DOI: 10.1051/matecconf/20152703002

Sulfuric acid treated Petai belalang (Leucaena leucocephala) leaf powder (SLLP) was used as an adsorbent for Pb(II) ions removal. The experimental adsorption parameters investigated include pH, dosage and initial Pb(II) concentration. Pb(II) removal was more favored at a higher adsorbent dosage, pH and temperature. Adsorption kinetics conformed to the pseudo-second order model while Langmuir isotherm model recorded the value of maximum adsorption capacity (qmax) of 222 mg/g. The major functional groups involved in the adsorption process were identified as hydroxyl, amino and ether as revealed by the FTIR analysis. The prepared adsorbent demonstrated a potential application for efficient removal of Pb(II) ions from industrial wastewater. © Owned by the authors, published by EDP Sciences, 2015.