Abstract

In this study, the adsorption of Algerian asphaltene sample extracted from Hassi Messaoud oil field is conducted for the first time. The adsorption process was performed using novel synthesized iron oxide nanoparticles (γ-Fe₂O₃). γ-Fe₂O₃ Nanoparticles were in-house synthesized and characterized by an array of techniques using, Brunauer-Emmett-Teller (BET), high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The results showed that the synthesized nanoparticles have an average crystalline domain size around 10 nm and a specific surface area of 120 m²/g. The adsorption process of the Algerian asphaltenes took place in a batch mode by dissolving the asphaltenes in toluene at 25°C. Different initial concentrations of asphaltene solutions were used in this study, namely 100, 500, and 1000 ppm. During this adsorption, both isotherm and kinetic studies were investigated. The results showed that the synthesized iron oxide nanoparticles are promising nano-adsorbents that have a high affinity to remove the asphaltenes and the equilibrium was recorded after 15 min. The Solid-Liquid-Equilibrium (SLE) model was used to correlate the adsorption experimental data.

中文翻译：

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合成的磁赤铁矿纳米颗粒对阿尔及利亚沥青的吸附

摘要

在这项研究中，首次对从Hassi Messaoud油田提取的阿尔及利亚沥青质样品进行了吸附。使用新颖合成氧化铁纳米颗粒（γ-铁进行该吸附过程₂ ö ₃）。了γ-Fe ₂ ö ₃纳米颗粒的内部合成并表征了通过使用的技术阵列，布鲁诺-埃梅特-特勒（BET），高分辨率的透射电子显微镜（HRTEM）和X射线衍射（XRD）。结果表明，合成的纳米颗粒的平均晶畴尺寸约为10 nm，比表面积为120 m ²/G。阿尔及利亚沥青质的吸附过程是通过在25°C下将沥青质溶解在甲苯中以间歇方式进行的。在这项研究中使用了不同的初始沥青质溶液浓度，即100、500和1000 ppm。在这种吸附过程中，研究了等温线和动力学研究。结果表明，所合成的氧化铁纳米粒子是具有广阔前景的纳米吸附剂，具有很高的亲和力，可去除沥青质，并在15分钟后记录到平衡。固液平衡（SLE）模型用于关联吸附实验数据。