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Sorption Studies of Nickel ions Onto Sawdust of Dalbergia Sissoo
Author(s) -
Shakirullah Mohammad,
Ahmad Imtiaz,
Shah Sher
Publication year - 2006
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200600139
Subject(s) - chemistry , sawdust , sorption , freundlich equation , nickel , langmuir , biosorption , aqueous solution , endothermic process , adsorption , inorganic chemistry , nuclear chemistry , organic chemistry
Sawdust of Dalbergia sissoo , a byproduct of sawmills, was found to be a promising adsorbent for the removal of nickel ions from aqueous solution. Sorption of nickel ions onto sawdust of Dalbergia sissoo was studied using the batch technique. Kinetics studies show that nickel ions sorption process obeys a first order rate law. The applicability of the Langmuir and Freundlich models for the data was tested. Both the models adequately describe the experimental data of the biosorption of nickel ions. The sorption capacities and energies were calculated. Langmuir parameters X m and K 1 were found to increase with rise in temperature; Freundlich constants 1/n and K f have been evaluated for 293K, 303K, 313K and 323K. Thermodynamic parameter ΔH° = 4.80 kJ mol −;1 shows that sorption of nickel ions onto sawdust is an endothermic process.