CAJ | 학술논문

以液体石蜡模拟矿物润滑油基础油，通过生物降解实验考察了脂肪酸乙醇胺、脂肪酸酰胺、羟乙基咪唑啉、酰基氧化胺4种含氮表面活性剂对其生物降解性的影响，分别采用紫外‐可见光分光光度计和表面张力仪测定了液体石蜡生物降解体系在600 nm波长处的光密度和油‐水界面张力。结果表明，4种含氮表面活性剂均可显著提高液体石蜡的生物降解性，其中酰基氧化胺的效果最好；当其以质量分数1.0％加入液体石蜡时，可使后者的生物降解率由33.76％提高至72.13％。生物降解过程中，含氮表面活性剂显著降低体系的油‐水界面张力并加速微生物生长，从而起到促进润滑油生物降解之作用。
이액체석사모의광물윤활유기출유，통과생물강해실험고찰료지방산을순알、지방산선알、간을기미서람、선기양화알4충함담표면활성제대기생물강해성적영향，분별채용자외‐가견광분광광도계화표면장력의측정료액체석사생물강해체계재600 nm파장처적광밀도화유‐수계면장력。결과표명，4충함담표면활성제균가현저제고액체석사적생물강해성，기중선기양화알적효과최호；당기이질량분수1.0％가입액체석사시，가사후자적생물강해솔유33.76％제고지72.13％。생물강해과정중，함담표면활성제현저강저체계적유‐수계면장력병가속미생물생장，종이기도촉진윤활유생물강해지작용。
Impacts of four nitrogenous surfactants ,viz .fatty acidic ethanolamine ,fatty acidic amide and hydroxyl imidazoline ,and acyl amine oxide ,as additives on biodegradation of liquid paraffin were tested by a biodegradation tester .Thereafter ,the optical density at 600 nm wavelength and oil‐water interfacial tension of the biodegradation system were determined by ultraviolet‐visible spectrophotometer and interfacial tension instrument ,respectively .The results indicated that the biodegradability of liquid paraffin was markedly enhanced by nitrogenous surfactants ,among which acyl amine oxide was the best candidate . The biodegradability of liquid paraffin increased from 33.76% to 72.13% after formulated with acyl amine oxide at mass fraction of 1.0% . The stimulation of nitrogenous surfactants to liquid paraffin biodegradation was ascribed to the dramatic decrease of oil‐water interfacial tension and the obvious increase of microbial populations in the biodegradation system .