Wang Peng, Gu Xuefan, Xue Ming, Li Yongfei, Dong Sanbao, Chen Gang, Zhang Jie
State Key Laboratory of Petroleum Pollution Control, Xi'an Shiyou University, Xi'an, Shaanxi, 710065, China.
Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi'an Shiyou University, Xi'an, Shaanxi, 710065, China.
J Clean Prod. 2022 Jul 15;358:131903. doi: 10.1016/j.jclepro.2022.131903. Epub 2022 May 3.
The disposal of medical waste has become an increasing environmental issue since the COVID-19 epidemic outbreaks. Conventional disposal methods have produced waste of fossil resources and environmental problems. In this study, the waste medical mask-derived materials were tested as viscosity reducer and pour point depressant to evaluate the possibility of being used as crude oil fluidity improver. The results show that the materials derived from the three parts of the waste medical mask can reduce the viscosity and pour point of each crude oil samples from different oilfields in China. The middle layer of the medical mask (PP-2) displays the highest efficiency, and the viscosity reduction rate and maximum pour point reduction reaches 81% and 8.3 °C at 500 ppm, respectively. A probable mechanism of improving rheological properties of the crude oil samples by the medical mask-derived materials was further proposed after the differential scanning calorimetry (DSC) analysis and the wax crystal morphology analysis. We hope this work could provide a way to solve the current environmental issues under COVID-19.
自新冠疫情爆发以来，医疗废物的处置已成为一个日益严重的环境问题。传统的处置方法造成了化石资源的浪费和环境问题。在本研究中，对废弃医用口罩衍生材料作为降粘剂和降凝剂进行了测试，以评估其用作原油流动性改进剂的可能性。结果表明，废弃医用口罩三个部分衍生的材料均可降低中国不同油田各原油样品的粘度和凝点。医用口罩的中间层（PP-2）表现出最高的效率，在500 ppm时，粘度降低率和最大凝点降低分别达到81%和8.3℃。在差示扫描量热法（DSC）分析和蜡晶形态分析之后，进一步提出了废弃医用口罩衍生材料改善原油样品流变性能的可能机理。我们希望这项工作能够为解决新冠疫情下当前的环境问题提供一条途径。
