Pollution characteristics of polycyclic aromatic hydrocarbons in common used mineral oils and their transformation during oil regeneration

作     者：Xiaohui Wu Bo Yue Yi Su Qi Wan Qifei Huang Qunhui Wang Hongying Cai 

作者机构：State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental Sciences Beijing 100012China Civil and Environmental Engineering InstituteUniversity of Science and Technology BeijingBeijing 100083China The Solid Waste Management Center of ChongqingChongqing 401147China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2017年第29卷第6期

页      面：247-253页

核心收录：

学科分类：083001[工学-环境科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082903[工学-林产化学加工工程] 08[工学] 0829[工学-林业工程] 082201[工学-制浆造纸工程] 0822[工学-轻工技术与工程] 

基　　金：supported by the Special Research Funds for Public Welfare of the State Environmental Protection Administration(No.201309023) 

主　　题：Used mineral oilPAHsPollution characteristicsRegenerationTransformation 

摘      要：The pollution characteristic of polycyclic aromatic hydrocarbons （PAHs） in common used mineral oils, semi-refined oils, refined oils and solid wastes produced during the used mineral oil regeneration process was analyzed. The results showed that total PAHs content in six common used mineral oils was as follows： used engine oil 〉 used quenching oil 〉 used casting oil 〉 used hydraulic oil 〉 used antimst oil 〉 used industrial lubricating oil. Furthermore, this order was dependent on the source of PAHs and oil working temperatures. Additionally, total PAt-Is content in regenerated oils was as follows： semi-refined oil 〉 refined oil 〉 crude oil, which was related to the catalytic cracking process of crude oil and adsorption refining process of semi-refined oil. The ranking of total PAHs content in regenerated wastes varied depending on the regeneration technology used as follows： waste adsorption sand 〉 acid sludge 〉 waste clay 〉 precipitation sludge 〉 cracked residue. In all types of used mineral oils and regenerated wastes, the maximum and minimum proportions of the total PAHs content were composed of 2-3 ring-PAHs and 5-6 ring-PAHs, respectively. The majority of PAHs in the used mineral oils entered into regenerated wastes during regeneration process, while a small number remained in the regenerated oil.