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Indexed by:期刊论文

Date of Publication:2009-07-01

Journal:JOURNAL OF ENVIRONMENTAL SCIENCES

Included Journals:SCIE、PubMed、ISTIC、CSCD

Volume:21

Issue:9

Page Number:1290-1295

ISSN No.:1001-0742

Key Words:microwave heating; crude oil remediation; carbon fiber

Abstract:Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber (CF) was explored. The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a condensation system of ice-salt bath. The experimental results indicated that CF could efficiently enhance the microwave heating of soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700 degrees C within 4 min using 800 W of microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery showed that, during the remediation process, oil contaminant in the soil could be efficiently recovered without causing significant secondary pollution.