Kamal Rasha S, Michel George, Ageez Amr, Farag Reem K
Department of Petroleum Applications, Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt.
Faculty of Biotechnology, October University for Modern Sciences and Arts, 6th of October City, Giza 3210001, Egypt.
ACS Omega. 2023 Jan 19;8(4):3872-3881. doi: 10.1021/acsomega.2c06274. eCollection 2023 Jan 31.
One of the most widely used plastics in the world's rapidly urbanizing population is polyethylene (PE). Globally, there is a growing demand for plastics. Polyethylene plastics do pollute and harm the environment. Although polyethylene is said to be nonbiodegradable, any chemical deterioration can take hundreds of years. This study intends to improve the crude oil property, precisely its pour point, by using polyethylene derived from waste products with magnetic nanoparticles (MNPs) and applying it to heavy and light crude oils. Forty crude oil samples were prepared by changing the PE additive concentration from 0.25 to 2% with 0-2.0% MNP concentration. Dynamic light scattering (DLS), gas chromatography, and photomicrographic techniques were employed during the study. DLS results revealed that nanoparticles of heavy (B) crude oil have bigger particle sizes than light (A) crude oil samples, and the overall distribution of the added nanoparticles was much better in light crude oil than in heavy crude oil. The photomicrographic results revealed that the treated samples using additives provided a significant wax crystal reduction compatible with the provided pour point results. The prepared sample of the treated light (A) crude oil provided a more extraordinary rheology performance than the heavy (B) crude oil. Moreover, prepared crude oil samples with PE additives and MNPs are effective as pour point depressants.
聚乙烯（PE）是全球快速城市化进程中使用最广泛的塑料之一。在全球范围内，对塑料的需求不断增长。聚乙烯塑料确实会污染和危害环境。尽管聚乙烯被认为是不可生物降解的，但任何化学降解都可能需要数百年时间。本研究旨在通过使用由废弃产品衍生的聚乙烯与磁性纳米颗粒（MNP）来改善原油性能，确切地说是其倾点，并将其应用于重质和轻质原油。通过将PE添加剂浓度从0.25%变化到2%，同时MNP浓度从0变化到2.0%，制备了40个原油样品。在研究过程中采用了动态光散射（DLS）、气相色谱和显微摄影技术。DLS结果表明，重质（B）原油的纳米颗粒尺寸比轻质（A）原油样品的更大，并且添加的纳米颗粒在轻质原油中的整体分布比重质原油中的要好得多。显微摄影结果表明，使用添加剂处理的样品蜡晶显著减少，这与所提供的倾点结果相符。处理后的轻质（A）原油制备样品的流变性能比重质（B）原油更为优异。此外，添加了PE添加剂和MNP的制备原油样品作为降凝剂是有效的。
