Post-crosslinked polymer adsorbents and their properties for separation of furfural from aqueous solutions

K. Jeřábek, L. Hanková, Z. Prokop
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引用次数: 22

Abstract

Polymer adsorbents have been prepared by post-polymerization crosslinking of the swollen chloromethylated gel-type and macroreticular copolymers of styrene and divinylbenzene. Their morphology has been studied in the dry state by nitrogen adsorption/desorption method and in the swollen state by inverse steric exclusion chromatography. Their sorption properties were tested for the separation of furfural from aqueous solutions. Obtained data were compared with properties of conventional commercial polymer adsorbents Amberlite XAD-2 and XAD-4. At low concentrations of the sorbate in the surrounding solution the highly microporous post-crosslinked materials are much more efficient adsorbents than the conventional commercial polymers. However, their sorption capacity is restricted by limited pore volume and at higher equilibrium concentrations the high surface area macroporous polymers like Amberlite XAD-4 can be more efficient adsorbents.

后交联聚合物吸附剂及其从水溶液中分离糠醛的性能
将膨胀型氯甲基化凝胶型和大网状苯乙烯-二乙烯基苯共聚物通过聚合后交联制备了聚合物吸附剂。用氮吸附/解吸法研究了它们在干燥状态下的形态,用反位阻色谱法研究了它们在膨胀状态下的形态。测试了它们对糠醛水溶液的吸附性能。将所得数据与常规商用高分子吸附剂Amberlite XAD-2和XAD-4的性能进行了比较。当周围溶液中山梨酸浓度较低时,高微孔后交联材料比传统的商用聚合物具有更有效的吸附剂。然而,它们的吸附能力受到有限孔隙体积的限制,在较高的平衡浓度下,像Amberlite XAD-4这样的高表面积大孔聚合物可以成为更有效的吸附剂。
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