PDF(Pubmed)
Abstract：
This research investigates the interactions between a novel environmentally friendly chemical fluid consisting of Xanthan gum and bio-based surfactants, and crude oil. The surfactants, derived from various leaves using the spray drying technique, were characterized using Fourier-transform infrared (FTIR) spectroscopy, zeta potential analysis, Dynamic light scattering, and evaluation of critical micelle concentration. Static emulsion tests were conducted to explore the emulsification between crude oil and the polymer-surfactant solution. Analysis of the bulk oil FTIR spectra revealed that saturated hydrocarbons and light aromatic hydrocarbons exhibited a higher tendency to adsorb onto the emulsion phase. Furthermore, the increased presence of polar hydrocarbons in emulsion phases generated by polar surfactants confirmed the activation of electrostatic forces in fluid-fluid interactions. Nuclear magnetic resonance spectroscopy showed that the xanthan solution without surfactants had a greater potential to adsorb asphaltenes with highly fused aromatic rings, while the presence of bio-based surfactants reduced the solution\'s ability to adsorb asphaltenes with larger cores. Microfluidic tests demonstrated that incorporating surfactants derived from Morus nigra and Aloevera leaves into the xanthan solution enhanced oil recovery. While injection of the xanthan solution resulted in a 49.8% recovery rate, the addition of Morus nigra and Aloevera leaf-derived surfactants to the xanthan solution increased oil recovery to 58.1% and 55.8%, respectively.
摘要：
这项研究调查了由黄原胶和生物基表面活性剂组成的新型环保化学流体之间的相互作用，和原油。表面活性剂，使用喷雾干燥技术从各种叶子中提取，使用傅里叶变换红外(FTIR)光谱进行表征，zeta电位分析，动态光散射,和临界胶束浓度的评价。进行静态乳液测试以探索原油与聚合物-表面活性剂溶液之间的乳化作用。对散装油FTIR光谱的分析表明，饱和烃和轻质芳烃表现出更高的吸附到乳液相上的趋势。此外，由极性表面活性剂产生的乳液相中极性烃的存在增加证实了流体-流体相互作用中静电力的激活。核磁共振波谱表明，不含表面活性剂的黄原胶溶液具有更大的吸附具有高度稠合芳族环的沥青质的潜力，而生物基表面活性剂的存在降低了溶液吸附具有较大岩心的沥青质的能力。微流体测试表明，将源自黑桑和Aloevera叶子的表面活性剂掺入黄原胶溶液中可提高油采收率。黄原胶溶液的注入产生49.8%的回收率,在黄原胶溶液中添加黑桑和阿洛维拉叶衍生的表面活性剂，将石油采收率提高到58.1%和55.8%，分别。
