The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Oct. 19, 2020
China University of Petroleum, Qingdao, CN;
Dong Liu, Qingdao, CN;
Shuhai Guo, Qingdao, CN;
Wei Zhu, Qingdao, CN;
Fushan Wen, Qingdao, CN;
Nan Shi, Qingdao, CN;
Yu Qiu, Qingdao, CN;
Xiaoning Feng, Qingdao, CN;
Bo Wu, Qingdao, CN;
Gang Li, Qingdao, CN;
Changlong Yin, Qingdao, CN;
Xiujie Yang, Qingdao, CN;
Dehui Kong, Qingdao, CN;
Hongbo Dai, Qingdao, CN;
Mengfei Li, Qingdao, CN;
Sa Wang, Qingdao, CN;
CHINA UNIVERSITY OF PETROLEUM, Qingdao, CN;
Abstract
A combined remediation method of petroleum-contaminated soil includes: impurity removal pretreatment, photocatalytic pre-oxidation, stepwise thermal desorption of petroleum from soil, and high-temperature oxidation; with iron-titanium composite metal oxide (ITCMO) as a catalyst, conducting oxidation pretreatment under light conditions so that some cross-linked structures in macromolecular petroleum contaminants are broken and degraded; and conducting stepwise pyrolysis to achieve a removal rate of more than 98.00%. The new method adopts a combined remediation technology of photocatalytic pre-oxidation-stepwise pyrolysis, which realizes a relatively-high removal rate of petroleum hydrocarbons and the efficient and harmless remediation of high-concentration petroleum-contaminated soil, and remedied soil can be reused.