Yan Xi, Xie Yan, Zhang Shucai, Sheng Xuejia, Sun Jiancheng, Wang Wei, Liu Jingru, Dou Xiaohan
State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266071, China.
Sinopec Group, Beijing, 100728, China.
Heliyon. 2024 May 20;10(11):e31574. doi: 10.1016/j.heliyon.2024.e31574. eCollection 2024 Jun 15.
Frequent oil spill accidents caused by transportation, storage and usage may lead to severe damage on aquatic and ecological environments. Effective methods for rapid oil recovery are urgently in demand. Polyvinyl chloride, hydrophobic nano-SiO, expanded graphite were separately applied to polyurethane and melamine sponge to fabricate superhydrophobic sponge material. The selected superhydrophobic sponge was introduced to establish sponge - covered disc skimmer. Oil recovery tests of the device were conducted to determine the optimum parameters. The examined operating conditions encompassed sponge thickness, immersion depth, rotational speed, oil slick thickness, operation time. The results showed that the melamine sponge modified by both polyvinyl chloride and hydrophobic nano-SiO exhibits super-hydrophobicity with a water contact angle of 150.3°. The absorption capacity for diesel oil can reach 53.89 g/g. The absorption capacity can still achieve 90 % of its initial capacity even after 500 extrusion-absorption separation tests. The results indicate the superiority of the superhydrophobic sponge covered surface in oil recovery over the standard steel surface regardless of the operating conditions. The recovery rate of the device can still achieve 96.4 % of its initial capacity with 95 % efficiency even after 85 h operation. The results suggest the superhydrophobic sponge - covered disc skimmer may have great application perspectives in oil spill recovery.
运输、储存和使用过程中频繁发生的石油泄漏事故可能会对水生和生态环境造成严重破坏。因此，迫切需要有效的快速采油方法。将聚氯乙烯、疏水性纳米二氧化硅、膨胀石墨分别应用于聚氨酯和三聚氰胺海绵，制备超疏水海绵材料。引入所选的超疏水海绵，建立覆盖海绵的圆盘撇油器。对该装置进行采油试验，以确定最佳参数。考察的操作条件包括海绵厚度、浸没深度、转速、油膜厚度、操作时间。结果表明，聚氯乙烯和疏水性纳米二氧化硅改性的三聚氰胺海绵具有超疏水性，水接触角为150.3°。柴油吸收量可达53.89g/g。即使经过500次挤压-吸收分离试验，吸收量仍能达到初始容量的90%。结果表明，无论操作条件如何，超疏水海绵覆盖表面在采油方面优于标准钢表面。即使在运行85小时后，该装置的回收率仍能达到初始容量的96.4%，效率为95%。结果表明，超疏水海绵覆盖圆盘撇油器在溢油回收方面可能具有广阔的应用前景。
