Immobilization of β-CD on a Hyper-Crosslinked Polymer for the Enhanced Removal of Amines from Aqueous Solutions

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A simple and efficient strategy to prepare a β-CD-modified hyper-crosslinked styrene-divinyl benzene copolymer (CDM-HCP) was developed. It was applied for the removal of anilines from aqueous solutions. The introduction of β-CD into the hyper-crosslinked polymer (see the featured scheme)significantly enhanced adsorption properties for the removal of various amines such as aniline, p-chloroaniline (p-CA)p-methylaniline (p-MA) and p-aminobenzoic acid (p-ABC). The maximum adsorption capacities determined by adsorption isotherms were 148.97 mg/g for aniline, 198.45 mg/g for p-MA, 293.71 mg/g for p-CA, and 622.91 mg/g for p-ABC, respectively. It had higher adsorption capacities than those of some commercial polymeric resins, such as XAD-4, PA66, and AB-8.

HPC4

 

Figure 1 Effect of the amounts of β-CD in CDM-HPC on the amine adsorption

 

 

 

A CDM-HCP can be regenerated efficiently and used repeatedly, indicating its potential technological applications in removing organic pollutants from actual industrial effluents.

 

Read more:

Yang, Z., Wu, G., Li, Q., Ai, H., Yao, X., & Ji, H. (2020). Immobilization of β-CD on a Hyper-Crosslinked Polymer for the Enhanced Removal of Amines from Aqueous Solutions. Polymers, 12(7), 1620. doi:10.3390/polym12071620

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