Affiliations: State Key Laboratory of Pollution Control and
Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093,
China | Research Center for Engineering Technology of Organic
Poison Control and Resources Reuse in Jiangsu Province, Nanjing 210038,
China | Department of Chemical Engineering, Jiangsu
Polytechnic, Changzhou 213016, China
Abstract: The adsorption behaviors of 1-naphthol, 1-naphthylamine and
1-naphthol/1-naphthylamine mixtures in water over two macroreticular adsorbents
were investigated in single or binary batch systems at 293 K, 303 K and 313 K
respectively. All the adsorption isotherms in the studied systems can be
adequately fitted by Langmuir model. In the case of aminated macroreticular
adsorbent NDA103, 1-naphthol is adsorbed to a larger extent than
1-naphthylamine; while, the opposite trend is found for nonpolar macroreticular
adsorbent NDA100. It is noteworthy that at higher temperature (303 K and 313
K), the total uptake amounts of 1-naphthol and 1-naphthylamine in all
binary-component systems are obvious larger than the pure uptake amounts in
single-component systems, which is presumably due to the cooperative effect
primarily arisen from the hydrogen-bonding interaction between the loaded
1-naphthol and 1-naphthylamine molecules. The simultaneous adsorption systems
were confirmed to be helpful to the selective adsorption towards 1-naphthol
according to the larger selective index.
