Abstract
Abstract On the basis of site investigation and sample collection of petroleum contaminants in the soil‐water‐crop system in the Shenyang‐Fushun sewage irrigation area, the physical‐chemical‐biological compositions of the unsaturated zone is analyzed systematically in this paper. At the same time, the degradation kinetics of residual and aqueous oils is determined through biodegradation tests. The studies show that dominant microorganisms have been formed in the soils after long‐term sewage irrigation. The microorganisms mainly include bacteria, and a few of fungus and actinomycetes. After a 110‐days' biodegradation test, the degradation rate of residual oil is 9.74%–10.63%, while the degradation rate of aqueous oil reaches 62.43%. This indicates that the degradation rate of low‐carbon aqueous oil is higher than that of high‐carbon residual oil. In addition, although microbial degradation of petroleum contaminants in soils is suitable to the first‐order kinetics equation, the half‐lives of aqueous oil, No. 20 heavy diesel and residual oil in the surface soils (L2–1, S1–1 and X1–1) are 1732 h, 3465 h and 17325 h, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
