relation: https://khub.utp.edu.my/scholars/4728/ title: Adsorptive removal of ni2+ from aqueous solution onto rice husk-based activated carbon creator: Taha, M.F. creator: Shuib, A.S. creator: Shaharun, M.S. creator: Borhan, A. description: The potential of rice husk-based activated carbon (RHAC) as an alternative low-cost adsorbent for the removal of Ni2+ from aqueous solution was studied. RHAC was prepared via chemical treatment using NaOH followed by the carbonization process. The textural properties of rice husk-based activated carbon, i.e. surface area (253 m2/g) and pore volume (0.17 cm2/g), were determined by N2 adsorption. The adsorption studies to remove Ni2+ from aqueous solution using RHAC were carried out at a fixed initial concentration of Ni2+ (150 ppm) with varying RHAC as a function of contact time at room temperature. The concentration of Ni2+ was determined by atomic absorption spectrophotometer (AAS). The maximum removal of Ni2+ was increased from 40 to 89 when the amount of RHAC was increased from 0.1 g to 0.5 g. The isotherm and kinetic analyses showed that equilibrium data of adsorption studies fitted well Langmuir, Freundlich and second order kinetic models. © 2014 Trans Tech Publications, Switzerland. publisher: Trans Tech Publications Ltd date: 2014 type: Article type: PeerReviewed identifier: Taha, M.F. and Shuib, A.S. and Shaharun, M.S. and Borhan, A. (2014) Adsorptive removal of ni2+ from aqueous solution onto rice husk-based activated carbon. Applied Mechanics and Materials, 625. pp. 893-896. ISSN 16609336 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84914147105&doi=10.4028%2fwww.scientific.net%2fAMM.625.893&partnerID=40&md5=ef154b80823e8c92853e32f989fd6cdc relation: 10.4028/www.scientific.net/AMM.625.893 identifier: 10.4028/www.scientific.net/AMM.625.893