摘要
对矿物润滑油(简称润滑油)和含月桂酰基丙氨酸的润滑油在土壤中的生物降解性进行了研究,采用指数速率模型对两种润滑油的生物降解动力学方程进行了回归拟合。实验结果表明,加入月桂酰基丙氨酸可加快润滑油的生物降解速率,与不加月桂酰基丙氨酸相比,生物降解率从26%提高至36%;润滑油的生物降解符合一级反应动力学规律,润滑油降解速率常数为0.0155mg/(g.d),半衰期为44.7d;含月桂酰基丙氨酸的润滑油的降解速率常数为0.0216mg/(g.d),半衰期为32.1d;F检验结果表明,用一级反应动力学模型描述润滑油生物降解动力学是合理的。
Biodegradabilities of both neat lubricating oil and lubricating oil containing lauroyl alanine in soil were evaluated. Kinetic equations for the biodegradations of the lubricating oils were regressed based on exponential rate model. Under given test conditions, the biodegradation of the lubricating oil was accelerated by lauroyl alanine and the biodegradability increased from 26% to 36%. Biodegradation kinetics of the two lubricating oils all followed first-order reaction characteristics. The biodegradation rate constant and the half-life for the neat lubricating oil were 0. 015 5 mg/（ g · d） and 44.7 d respectively, while those for the formulated oil were 0. 021 6 mg/（g · d） and 32. 1 d respectively. The results of the F-test showed that the first-order reaction kinetics model was dependable for characterizing kinetics of the lubricating oil biodegradation.
出处
《石油化工》
CAS
CSCD
北大核心
2010年第4期454-457,共4页
Petrochemical Technology
基金
国家自然科学基金项目(50975282)
重庆市杰出青年基金项目(2008BA4037)
重庆市高校创新团队建设计划资助项目
