Efficient removal of BTEX from aqueous solution by β-cyclodextrin modified poly(butyl methacrylate) resin

• A β-CD modified poly(butyl methacrylate) resin (poly(BMA-Co-CD) was synthesized.
• The resin has a low BET surface area and an effectively nonporous structure.
• Excellent adsorption properties toward BETX from aqueous solutions were investigated.

Efficient removal of benzene, toluene, ethylbenzene and xylene (BTEX) from aqueous solution has been studied with a β-cyclodextrin (β-CD) modified poly(butyl methacrylate) resin (poly(BMA-Co-CD). The effects of the amount of β-CD in poly(BMA-Co-CD), pH, ionic strength, contact time, and temperature of the solution on the adsorption of BTEX were investigated in details. Adsorption data were fitted very well to Freundlich model. The results showed that the β-CD groups on the resin played a significant role for adsorption of BTEX, and quantum chemical calculation confirmed the experimental results. The resin exhibits good performance e.g. high adsorption capacity, high separation efficiency, and easy regeneration.

A β-CD modified poly(butyl methacrylate) resin was synthesized and employed as an effective sorbent for the removal of benzene, toluene, ethylbenzene and xylene (BTEX) from aqueous solutions.Figure optionsDownload as PowerPoint slide