@article{scholars4728, volume = {625}, note = {cited By 0; Conference of 3rd International Conference on Process Engineering and Advanced Materials, ICPEAM 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:114811}, doi = {10.4028/www.scientific.net/AMM.625.893}, title = {Adsorptive removal of ni2+ from aqueous solution onto rice husk-based activated carbon}, year = {2014}, publisher = {Trans Tech Publications Ltd}, journal = {Applied Mechanics and Materials}, pages = {893--896}, issn = {16609336}, author = {Taha, M. F. and Shuib, A. S. and Shaharun, M. S. and Borhan, A.}, isbn = {9783038351818}, keywords = {Activated carbon; Activated carbon treatment; Carbonization; Metal ions; Metals; Sodium hydroxide; Wastewater, Atomic absorption spectrophotometer; Carbonization process; Chemical treatments; Initial concentration; Low-cost adsorbents; Metal ion adsorption; Rice husk; Second order kinetics, Adsorption}, url = {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}, abstract = {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. {\^A}{\copyright} 2014 Trans Tech Publications, Switzerland.} }