Study of Weathering Effects to the n-alkane of Lubricant in Soils

• Main Authors: Tsai-Ping Wang, 王采屏
• Other Authors: Ming-Chien Su
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/b976p7

碩士 === 國立東華大學 === 自然資源與環境學系 === 107 === Lubricating oil is a mineral oil refined from crude oil. It needs to have the characteristics of heat resistance to achieve good lubrication effect. It will be blended according to product requirements in the manufacturing process. Therefore, the composition is more complicated and is indispensable and often in engineering. It is used in a petroleum product in life; it is composed of alkane which is insoluble in water above n-C18 and has a specific gravity of less than 1. If it accidentally leaks into the soil, it will increase the difficulty of remediation through the scope of penetration and diffusion. In the related remediation technology of heavy petroleum products such as lubricating oil, due to the nature of the oil, it cannot be effectively removed in a short time by natural weathering or using relevant pumping techniques such as SVE, and it is mostly biodegradable by microbial Growth and utilization will decompose its metabolism into smaller molecules for further removal. Therefore, the soils with different CG4 concentrations, such as 0.5%, 1.0% and 1.5%, are watered by deionized water and applied with long-term controlled release. A 120-day weathering test was carried out by artificial manure for man-made operation, and the distribution of n-alkane compounds was analyzed to investigate the change of ubricating oil weathering in soil. According to the results of this study, (1) the main carbon number of CG4 is distributed in n -C18 to n-C35, in which the compounds in the n-C26 to n-C28 range are the most resistant to weathering. (2) The low-release ertilizer is rich in higher carbon such as n-C21 to n-C35. A number of n-alkane compounds, and the granular plastic sheath has a phenomenon of adsorbing CG4. (1) The main carbon number of CG4 is distributed between n-C18 and n-C35, and the compound with n-C26 to n-C28 interval is the most resistant to weathering. The uture can be used as a diagnostic ratio for identifying this oil r assessing the degree of weathering. According to (2) Fertilizer long-term controlled release compound fertilizer can effectively and continuously provide fertilizer, and its functional additive s rich in n-C21 to n-C35 and other higher carbon number n-alkane compounds, and its granular shape The plastic outer skin has the phenomenon of adsorbing CG4. (3) The change mechanism of the pollutants in this study is weathering degradation affected by environmental factors such as temperature, humidity and sunshine.