[Cooperative adsorption of 1-naphthol and 1-naphthylamine onto hyper-crosslinked polymeric adsorbents].
Cooperative simultaneous adsorptions of 1-naphthol and 1-naphthylamine from aqueous solutions on hyper-cross-linked polymeric adsorbents (NDA103 and NDA100) were investigated. The results indicate that at the higher equilibrium concentrations, the total uptake amounts of 1-naphthol and 1-naphthylamine in binary systems (1-naphthol: 1-naphthylamine = 3:1, 1:1, 1:3) are obvious larger than the pure uptake amounts in single systems, and a large excess was noted on the particle surface at saturation, which is presumably due to the cooperative effect primarily arisen from the hydrogen bonding or weak acid-base interaction between 1-naphthol and 1-naphthylamine. The adsorption isotherms for them in both single and binary systems can be well fitted by Langmuir equation. The increasing temperature from 293 K to 313 K puts much more effect on the cooperative coefficient of simultaneous adsorption of 1-naphthylamine and 1-naphthol on NDA103 than on NDA100. The amino groups on NDA103 enhance the adsorption affinity as well as the cooperative coefficient of 1-naphthol.
Zhang
Wei-ming
WM
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, China. zwmnju@sina.com
Chen
Jin-long
JL
Zhang
Quan-xing
QX
Pan
Bing-cai
BC
Lu
Jun-dong
JD
D015057:1-Naphthylamine / Q000737:chemistry*; D000327:Adsorption; D003432:Cross-Linking Reagents / Q000737:chemistry; D009284:Naphthols / Q000737:chemistry*; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D003432:Cross-Linking Reagents; D009284:Naphthols; D014874:Water Pollutants, Chemical; C029350:1-naphthol; D015057:1-Naphthylamine