| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 226992 | Journal of Industrial and Engineering Chemistry | 2015 | 6 Pages |
Abstract
The adsorption of nicotine onto activated (AC) and AC modified (MAC, by contact with ammonium persulfate) can be described well using the Langmuir model with maximum adsorption capacities of 552 and 640 mg g−1, respectively. Nicotine has high ‘hardness’ and appears to adsorb most readily on the increased concentration of ‘hard’ MAC edge functional groups. Adsorption is shown to be exothermic; with enthalpy of −10 and −16 kJ mol−1 for AC and MAC, respectively. The negative free energy and positive entropy of adsorption indicate a spontaneous process and a strong affinity between aqueous nicotine and AC or MAC.
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Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Kewu Pi, Min Xia, Pan Wu, Meichen Yang, Shuyu Chen, Defu Liu, Andrea R. Gerson,