The polycyclic aromatic hydrocarbons (PAHs) are serious organic contaminants that are produced naturally and anthropogenically. The separation of PAHs by adsorption approach provides an efficient method to avoid the negative effects of PAHs pollution. In this study, cyclodextrin (CD) was grafted to chitosan (CS) by using glutaraldehyde as crosslinking agent to construct shaped CD-CS polymers and carbonization was executed subsequently. The carbonized β-CD-CS-1000 exhibited a significant increasement of BET surface area (CD-CS polymer: 1 m²·g⁻¹; β-CD-CS-1000: 1083 m²·g⁻¹) and great PAHs adsorption performance (anthracene: 106.34 mg/g; acenaphthylene: 41.02 mg/g). The adsorption kinetic behavior and the equilibrium adsorption process were further explored. β-CD-CS-1000 showed good cyclic adsorption capacity and anti-interference stability with the xylenes as interferon. Furthermore, the adsorbents based CD-CS can be synthesized at the gram-level in the lab and exhibited great adsorption capacity in real diesel. The large-scale preparation of shaped CD-CS adsorbents made it possible to be applied to the petrochemical industry.

中文翻译：

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基于环糊精有机聚合物的异形吸附剂的构建，用于去除多环芳烃


多环芳烃 （PAH） 是自然和人为产生的严重有机污染物。通过吸附方法分离 PAHs 提供了一种避免 PAHs 污染负面影响的有效方法。在本研究中，以戊二醛为交联剂，将环糊精 （CD） 接枝到壳聚糖 （CS） 上，构建成型的 CD-CS 聚合物，随后进行碳化。碳化 β-CD-CS-1000 表现出 BET 表面积显著增加（CD-CS 聚合物：1 m²·^g-1;β-CD-CS-1000：1083 m²·^g-1）和良好的 PAHs 吸附性能（蒽：106.34 mg/g;苊：41.02 mg/g）。进一步探索了吸附动力学行为和平衡吸附过程。β-CD-CS-1000 对二甲苯作为干扰素表现出良好的循环吸附能力和抗干扰稳定性。此外，基于吸附剂的 CD-CS 可以在实验室中合成克级，并在真实柴油中表现出很好的吸附能力。异形 CD-CS 吸附剂的大规模制备使其能够应用于石化工业。