Three bio-based crude oil emulsion breakers have been prepared from agricultural waste by chemical treatment of cashew nutshell liquid (CNSL) extract with triethanolamine via a one-pot reaction at 120 ℃. The triethanolamine-ester derivatives were characterized by Fourier Transform–InfraRed spectroscopy. Their effectiveness as crude oil emulsion breakers were investigated experimentally using the bottle test method. The effect of solvent type, water content, and concentration of the emulsion breaker, was used to study the demulsification process and determine their demulsification efficiency at a temperature of 60 ℃ for a contact time of 180 min. A commercial demulsifier, PhaseTreat 4633 (PT-4633) was used as a benchmark. Performance evaluation of the prepared emulsion breakers revealed their effectiveness in descending order as: triethanolamine dianacardate (TED) > triethanolamine trianacardate (TET) > triethanolamine anacardate (TEA). The data reveals that their emulsion breaking efficiency increases with increasing emulsion water content, and concentration. PT-4633 exhibited better demulsification efficiency than the triethanolamine-esters in xylene across the concentration and water content studied. Improved water separation was however observed for the triethanolamine-esters in butanol, as triethanolamine trianacardate (TET) performed better than PT-4633 at 10 ppm to 20 ppm at 30% water content with a water separation of 83.33% and 80% respectively. The evaluated triethanolamine ester derivatives exhibited better emulsion breaking potentials in butanol than xylene at shorter times, which may be due to the synergistic effect of butanol. Therefore, butanol could be used as a sustainable solvent substitute for xylene in demulsifier formulations.

通过一锅反应在120℃下用三乙醇胺化学处理腰果壳液（CNSL）提取物，从农业废料中制备了三种生物基原油破乳剂。三乙醇胺酯衍生物通过傅里叶变换红外光谱进行了表征。使用瓶测试方法，通过实验研究了它们作为原油破乳剂的有效性。利用溶剂类型，含水量和破乳剂浓度的影响，研究了破乳过程，并确定了在60℃，180分钟接触时间下的破乳效率。使用商用破乳剂PhaseTreat 4633（PT-4633）作为基准。制备的破乳剂的性能评估显示其有效性按降序排列为：双乙醇胺三乙醇胺（TED）>三乙醇胺三癸酸酯（TET）>三乙醇胺二十二酸酯（TEA）。数据表明，它们的破乳效率随着乳化水含量和浓度的增加而增加。在研究的浓度和含水量方面，PT-4633的破乳效率高于二甲苯中的三乙醇胺酯。但是，在丁醇中的三乙醇胺酯中观察到了更好的水分离性，因为在30％的水含量下，三乙醇胺三辛酸酯（TET）在10 ppm至20 ppm时的性能优于PT-4633，水分离率分别为83.33％和80％。被评估的三乙醇胺酯衍生物在较短的时间内在丁醇中显示出比二甲苯更好的破乳潜能，这可能是由于丁醇的协同作用所致。所以，