Abstract：
In this paper, we evaluated the potential of two synthesized bio-based polyurethane foams, PU1 and PU2, for the removal of diesel and gasoline from water mixtures. We started the investigation with the experiment in batch. The total sorption capacity S (g/g) for the diesel/water system was slightly higher with respect to gasoline/water, with a value of 62 g/g for PU1 and 65 g/g for PU2. We found that the sorption follows a pseudo second-order kinetic model for both the materials. The experimental data showed that the best isotherm models were obtained with Langmuir and Redlich-Peterson models. In addition, to provide an idea of the process scalability for future industrial applications, we tested the sorption capacity of the foams using a continuous-flow of the same oil/water mixtures and we obtained performances even better with respect to the batch test. The regeneration can be performed up to 50 times by centrifuge, without losing efficacy.
摘要：
在本文中,我们评估了两种合成的生物基聚氨酯泡沫的潜力，PU1和PU2，用于从水混合物中去除柴油和汽油。我们从批量实验开始调查。柴油/水系统的总吸附容量S(g/g)略高于汽油/水,PU1的值为62g/g，PU2的值为65g/g。我们发现两种材料的吸附均遵循伪二阶动力学模型。实验数据表明，用Langmuir和Redlich-Peterson模型获得最佳等温线模型。此外,为未来的工业应用提供工艺可扩展性的想法，我们使用相同的油/水混合物的连续流测试了泡沫的吸附能力，并且相对于批量测试，我们获得了更好的性能。再生可以通过离心机进行多达50次，而不失去功效。
