Triptycene and triphenylbenzene-based polymers of intrinsic microporosity (PIMs) for the removal of pharmaceutical residues from wastewater
Triptycene and triphenylbenzene-based polymers of intrinsic microporosity (PIMs) for the removal of pharmaceutical residues from wastewater
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DOI：
10.1016/j.micromeso.2021.111602
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发表时间：
2022-01-01
影响因子：
5.2
通讯作者：
Carta, Mariolino
中科院分区：
文献类型：
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作者：
Al-Hetlani, Entesar;Amin, Mohamed O.;Carta, Mariolino
本研究旨在研究三种TCAs的吸附去除；丙咪嗪（IMI）、去甲替林（NOR）和地西帕明（DES）采用基于三泰烯（TRIP）和三苯基苯（TPB）的四种聚合物网络。这些聚合物网络首次被用作纯碳氢化合物（TRIP-HC和TPB-HC）及其磺酸衍生物（TRIP-SO3H和TPB-SO3H），用于去除废水中的TCAs。研究了初始TCAs浓度的影响，发现磺酸改性聚合物比纯烃基聚合物耐受更高的TCAs浓度。吸附动力学和等温线研究表明，四种聚合物分别符合准二级动力学和Langmuir等温线模型。TRIP-SO3H和TPB-SO3H的吸附量为196.0 ~ 384.6 mg g(-1)， TRIP-HC和TPB-HC的吸附量为133.3 ~ 175.4 mg g（-1）。同时考察了共存离子Cl-、NO3-和SO42-的影响，TRIP-SO3H和TPB-SO3H对IMI、NOR和DES的吸附亲和力略有降低，而TRIP-HC和TPB-HC对IMI、NOR和DES的吸附亲和力有较大的降低。将片剂中的IMI溶解于自来水中，采用TRIP-SO3H和TPB-SO3H进行吸附，其吸附效率分别为96.96%和98.78%。通过5次吸附-解吸循环测试了这两种聚合物的再生能力，结果表明TPB-SO3H比TRIP-SO3H表现出更好的稳定性。最后，提出了聚合物吸附这些药物的潜在机理途径。
This study aims to investigate the adsorptive removal of three TCAs; imipramine (IMI), nortriptyline (NOR) and desipramine (DES) using four polymeric networks based on triptycene (TRIP) and triphenylbenzene (TPB). For the first time, these polymeric networks have been used as a pure hydrocarbon (TRIP-HC and TPB-HC) and as their sulfonic acid derivatives (TRIP-SO3H and TPB-SO3H), for the decontamination of TCAs from wastewater. The effect of the initial TCAs concentration was investigated, and it was found that sulfonic acid modified polymers tolerated higher TCAs concentrations than their pure hydrocarbon-based counterparts. Furthermore, the adsorption kinetics and isotherms were studied, which indicated that the four polymers followed pseudosecond-order kinetics and Langmuir isotherm models, respectively. The adsorption capacities values for TRIP-SO3H and TPB-SO3H were between 196.0 and 384.6 mg g(-1), whilst for TRIP-HC and TPB-HC were between 133.3 and 175.4 mg g(-1). The effect of the presence of coexisting ions such as Cl-, NO3- and SO42- was also examined and the adsorption affinities of IMI, NOR and DES were slightly lowered using TRIP-SO3H and TPB-SO3H, on the other hand, a greater decrease was observed using TRIP-HC and TPB-HC. Furthermore, IMI in a tablet formulation was dissolved in tap water and TRIP-SO3H and TPB-SO3H were employed, and it was found they exhibited excellent adsorption efficiencies of 96.96 and 98.78%, respectively. Regeneration of these two polymers was tested by performing five adsorption-desorption cycles and TPB-SO3H showed better stability in comparison to TRIP-SO3H. Finally, a potential mechanistic pathway for the adsorption of theses pharmaceuticals by the polymers was also proposed.