Comparative study of polymer containing β-cyclodextrin and –COOH for adsorption toward aniline, 1-naphthylamine and methylene blue

• Published in: Journal of hazardous materials 2009-11, Vol.171 (1), p.241-246
• Main Authors: Zhao, Dong, Zhao, Liang, Zhu, Cheng-Shen, Shen, Xiangyu, Zhang, Xiaozhuan, Sha, Baofeng
• Format: Article
• Language: English
• Subjects: 1-Naphthylamine; 1-Naphthylamine - chemistry; Adsorption; Aniline; Aniline Compounds - chemistry; Applied sciences; beta-Cyclodextrins - administration & dosage; Carboxyl group (–COOH); Chemical engineering; Exact sciences and technology; Industrial Waste; Methylene blue; Methylene Blue - chemistry; Models, Chemical; Particle Size; Pollution; Polymers - chemistry; Protein Structure, Tertiary; Spectroscopy, Fourier Transform Infrared; Time Factors; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - chemistry; Water Purification; β-Cyclodextrin (β-CD)
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2009.05.134

Three different polymers P1, P2 and P3 (P1 containing both β-CD and –COOH, P2 containing β-CD and P3 containing –COOH) were synthesized and applied to adsorption toward aniline, 1-naphthylamine and methylene blue. The concentrations ( C) before and after adsorption were determined and the adsorption capacities ( q) of P1, P2 and P3 were calculated. The maximum adsorption capacities ( q max) toward aniline: q max (P1) = 104 μmol g −1, q max (P2) = 14.9 μmol g −1 and q max (P3) = 53.1 μmol g −1; toward 1-naphthylamine: q max (P1) = 184 μmol g −1, q max (P2) = 53.8 μmol g −1 and q max (P3) = 125 μmol g −1; toward methylene blue: q max (P1) = 200 μmol g −1, q max (P2) = 12.7 μmol g −1 and q max (P3) = 215 μmol g −1. P1 exhibited remarkable adsorption toward all the three adsorbates. P2 was almost equal to P1 in adsorption toward methylene blue, but was less efficient than P1 in adsorption toward aniline and 1-naphthylamine. P3 also exhibited considerable adsorption toward aniline and 1-naphthylamine, but was inefficient toward methylene blue. P1 was obtained from nontoxic materials and through environment friendly procedures, so it was potentially an efficient and green adsorbent for water purification.