Small amount of lauroyl glutamine was incorporated into HVI 350 mineral oil and the biodegradabilities of HVI 350 mineral oil and the formulated mineral oil in soils were evaluated.Thereafter,the biodegradation kineti...Small amount of lauroyl glutamine was incorporated into HVI 350 mineral oil and the biodegradabilities of HVI 350 mineral oil and the formulated mineral oil in soils were evaluated.Thereafter,the biodegradation kinetic equations for the two lubricating oils were regressed based on the exponential rate model.The results indicated that lauroyl glutamine obviously promoted biodegradation of HVI 350 mineral oil.Under given test conditions,the biodegradation kinetic equation of HVI 350 mineral oil can be described as St=50.4e-0.0155t,while that for lauroyl glutamine formulated oil as St=51.2e-0.0235t.The half-lives of the two lubricating oils were 44.72days and 29.50 days,respectively.展开更多
文摘Small amount of lauroyl glutamine was incorporated into HVI 350 mineral oil and the biodegradabilities of HVI 350 mineral oil and the formulated mineral oil in soils were evaluated.Thereafter,the biodegradation kinetic equations for the two lubricating oils were regressed based on the exponential rate model.The results indicated that lauroyl glutamine obviously promoted biodegradation of HVI 350 mineral oil.Under given test conditions,the biodegradation kinetic equation of HVI 350 mineral oil can be described as St=50.4e-0.0155t,while that for lauroyl glutamine formulated oil as St=51.2e-0.0235t.The half-lives of the two lubricating oils were 44.72days and 29.50 days,respectively.
文摘以大豆粕为原料,采用加压酸解的方法制备了复合氨基酸溶液,再与月桂酰氯反应合成了N-月桂酰基复合氨基酸表面活性剂。研究了复合氨基酸溶液与月桂酰氯体积比、p H、反应温度、丙酮与复合氨基酸溶液体积比、反应时间对产物产率的影响,以单因素试验为基础,利用响应面法优化了工艺条件,并对酰化产物的表面活性性能进行了测定。结果表明,响应面优化大豆粕合成N-月桂酰基复合氨基酸工艺条件为:复合氨基酸溶液与月桂酰氯体积比3.2∶1,p H 10.2,反应温度35.5℃,丙酮与复合氨基酸溶液体积比1.6∶1,反应时间2 h。在最佳工艺条件下,产物产率为91.31%,产物表面活性性能良好。
